HP0-Y37: MIGRATING & TROUBLESHOOTING ENTERPRISE ...

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Appendix: Answers to the sample questions. .... introduced in several HP certification courses at several levels. RRPP is discussed only in the Troubleshooting ...
HP0-Y37: Y37: MIGRATING & TROUBLESHOOTING ENTERPRISE NETWORKS HP Networking Exam preparation guide

HP0-Y37: MIGRATING & TROUBLESHOOTING ENTERPRISE NETWORKS HP Networking Exam preparation guide

Overview Requirements for successful completion This guide helps you to study for the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam. You can benefit from this guide whether you are attempting to expand your existing HP certification or you have a former H3C or a Cisco background and want to get certified with HP. To pass the exam, you will need to demonstrate that you can troubleshoot complex, enterprise-level network solutions based on HP A-Series products and open-standard technologies. In addition to assessing your general skills in troubleshooting, the exam verifies that you can implement complex Border Gateway Protocol (BGP) solutions and HP’s Rapid Ring Protection Protocol (RRPP). You will also need sufficient experience with Cisco proprietary protocols to understand how those protocols interact with open-standard protocols and to follow best practices to migrate those protocols to their open-standard equivalents.

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Table of Contents Overview............................................................................................................................................ 2 Table of Contents................................................................................................................................. 3 Why take this exam?............................................................................................................................ 4 HP Master ASE – Network Infrastructure [2011] certification..................................................................... 4 Path 1............................................................................................................................................. 4 Path 2............................................................................................................................................. 4 Path 3............................................................................................................................................. 4 Who should take the exam?.................................................................................................................. 5 How to study for the exam .................................................................................................................... 5 Study tips based on your certification ..................................................................................................... 6 HP ASE – Network Infrastructure [2011] certification............................................................................ 6 Master ASE – HP ProCurve Campus LANs 2010 or HP ASE – Network Infrastructure [2011] with HP Enterprise Networking Products Technical Qualification ................................................................... 6 H3CSE certification .......................................................................................................................... 7 CCIE – Routing and Switching certification .......................................................................................... 7 Attend recommended ILTs ..................................................................................................................... 7 Migrating to an Open Standards Network .......................................................................................... 8 Topics covered ............................................................................................................................. 8 Format offered.............................................................................................................................. 8 More information.......................................................................................................................... 8 Troubleshooting HP Enterprise Networks ............................................................................................. 8 Topics covered ............................................................................................................................. 9 Format offered.............................................................................................................................. 9 More information.......................................................................................................................... 9 Accelerated Migrating & Troubleshooting HP Enterprise Networks ......................................................... 9 Topics covered ............................................................................................................................. 9 Format offered.............................................................................................................................. 9 More information.......................................................................................................................... 9 Purchase self-study materials................................................................................................................ 10 Take the official HP practice exam ....................................................................................................... 10 Obtain hands-on experience ............................................................................................................... 10 Refer to additional materials................................................................................................................ 10 How to take the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam .................................. 11 Exam content ................................................................................................................................. 11 Comments on the exam................................................................................................................... 12 Special tips for this exam .................................................................................................................... 13 Tips for taking HP exams .................................................................................................................... 13 Register ............................................................................................................................................ 13 Sample questions ............................................................................................................................... 13 Conclusion ........................................................................................................................................ 18 Appendix: Answers to the sample questions .......................................................................................... 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Why take this exam? Passing this exam gives you one component toward HP Master Accredited Systems Engineer – Network Infrastructure [2011] certification. This achievement certifies that you can design, integrate, and support secure network solutions for large and complex enterprise networks using A-Series network technologies. It is the highest level of certification that HP offers in the Network Infrastructure area.

HP Master ASE – Network Infrastructure [2011] certification There are three paths to achieve this certification, as outlined below. The exams you must pass are dependent upon which achievements you currently hold. (Some form of previous certification is required; if you do not have any of the certifications listed in Table 1, obtain the HP ASE – Network Infrastructure [2011] certification.)

Path 1 This path is designed for networking professionals who have the HP ASE – Network Infrastructure [2011] certification. In addition to taking the HP0-Y37 exam, you must pass the Deploying HP Enterprise Networks (HP0-Y36) exam.

Path 2 This path is designed for networking professionals with both of these achievements: • HP ASE – Network Infrastructure [2011] • HP Enterprise Networking Products Technical Qualification [2010] You only need to take the Migrating & Troubleshooting HP Enterprise Networks (HP0-Y37) exam.

Path 3 This path is designed for networking professionals who have one of the following certifications. •

Master ASE – HP ProCurve Campus LANs [2010]



H3CSE



CCIE – Routing and Switching

If you meet one of these criteria, you must pass the HP0-Y37 exam as well as two other exams: •

Designing & Troubleshooting Open Standard Networks (HP0-Y32) exam



Deploying HP Enterprise Networks (HP0-Y36) exam

By completing this path, you will also be granted the HP ASE – Network Infrastructure [2011] certification. Table 1 summarizes these requirements.

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Table 1: HP Master ASE – Network Infrastructure [2011] requirements based on current achievement

Requirements for HP Master ASE – Network Infrastructure

Current achievements Path 1

Path 2

HP ASE – Network Infrastructure [2011]

 HP ASE – Network Infrastructure [2011]  HP Enterprise Networking Products Technical Qualification [2010]

Proctored Exam – Designing & Troubleshooting Open Standard Networks (HP0-Y32) Proctored Exam – Deploying HP Enterprise Networks (HP0-Y36)

X

Proctored Exam – Migrating & Troubleshooting HP Enterprise Networks (HP0-Y37)

X

X

Path 3 Master ASE – HP ProCurve Campus LANs [2010]

H3CSE

CCIE – Routing and Switching*

X

X

X

X

X

X

*Note: CCIE specialties such as Voice, Security, or Wireless do not apply toward HP Master ASE – Network Infrastructure certification.

Who should take the exam? Every candidate for the HP Master ASE – Network Infrastructure [2011] certification must take this exam. Although anyone can take the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam, most successful candidates have at least five years of real-world experience implementing and maintaining complex enterprise networks. Successful candidates also prepare for the test in a variety of ways. This guide describes some of these ways and provides references to materials for further preparation. NOTE Anyone can take the exam, but passing it only helps you to achieve certification if you have one of the prior achievements listed in Table 1. If you are a new candidate, obtain the HP ASE – Network Infrastructure [2011] certification first.

How to study for the exam The Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam tests you on topics that are covered in two HP instructor-led training (ILT) courses (7days total). This training is recommended for all candidates no matter what their current achievements. Note that there is also a third HP ILT course that combines the content covered in the original two ILTs and is completed in a shorter period of time: 5 days instead of 7. More information on all three courses—including the recommended qualifications for candidates attending the third ILT—is available in this exam preparation guide.

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While it is recommended that you complete the available training, the training is neither required nor does it guarantee that you will pass the exam. It is expected that you will also study on your own and draw on your real-world experience. The exam certifies that you have the knowledge and skills necessary for HP Master ASE – Networking Infrastructure certification, the highest that HP offers in this area. Therefore, you will encounter complex and demanding questions, reflecting the challenging nature of the problems that the Master ASE often faces in complex, real world networking implementations. Read the sections below to further assess your options. Even if you do not intend to complete the recommended training, you should examine the topics that it covers because the exam will test you on your mastery of these topics.

Study tips based on your certification First you might want to choose topics on which to focus based on your current skills: •

HP ASE – Network Infrastructure [2011]



Master ASE – HP ProCurve LANs 2010 or HP ASE – Network Infrastructure [2011] with HP Enterprise Networking Products Technical Qualification



H3CSE



CCIE – Routing and Switching

You can then read about specific study methods.

HP ASE – Network Infrastructure [2011] certification The troubleshooting sections of the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam build on your knowledge of HP A-Series products. However, you must be familiar enough with advanced technologies that you can find errors and problems relatively quickly. You might consider taking the HP0-Y36 exam, another requirement for the HP Master ASE – Network Infrastructure [2011] certification, before this exam to ensure that you have the necessary expertise. In addition, the knowledge that you acquired at the ASE level, in particular in the HP Networking Interoperability ILT, will help you succeed in the Migrating to Open Network Standards ILT, one of the courses recommended for this exam, and ultimately on the exam itself. You might want to review that material. To learn more about ways to prepare for the exam, continue reading, beginning at: Attend recommended ILTs.

Master ASE – HP ProCurve Campus LANs 2010 or HP ASE – Network Infrastructure [2011] with HP Enterprise Networking Products Technical Qualification Although the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam includes a few questions on HP E-Series products (former HP ProCurve), it focuses on the A-Series products. You should strongly consider attending the Troubleshooting HP Enterprise Networks ILT to practice advanced troubleshooting on A-Series products. Before you take this ILT or attempt the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam, honestly assess your level of expertise in A-Series solutions. The training is designed for networking professionals who are quite comfortable implementing all types of switching and routing technologies on ASeries devices. In particular, BGP, MPLS, MPLS VPNs, and some of the A-Series QoS features might be new to you. The exam also poses questions on two protocols specific to the A-Series products, IRF and RRPP. IRF is introduced in several HP certification courses at several levels. RRPP is discussed only in the Troubleshooting HP Enterprise Networks ILT recommended for this exam. You might consider taking the Designing & Troubleshooting Open Standard Networks (HP0-Y32) exam, another requirement for the HP Master ASE – Network Infrastructure [2011] certification, before this exam. The training that you take for that exam will help you to gain the necessary expertise in A-Series products. You might also need to do some self-study, as well. In addition, the HP Networking Interoperability ILT, also associated with the HP0-Y32 exam, will teach you to manage multi-vendor environments. This expertise will help you to succeed in the Migrating to Open Network Standards ILT, one of the courses recommended for this exam, and ultimately in the exam itself. To learn more about ways to prepare for the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam, continue reading, beginning at: Attend recommended ILTs.

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H3CSE certification Despite your background in HP A-Series products, you should consider attending the Troubleshooting HP Enterprise Networks ILT to practice advanced troubleshooting. In addition to testing you on troubleshooting HP A-Series products, the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam assesses your ability to replace Cisco devices with any type of HP device (A-Series or E-Series). You should be very comfortable configuring, managing, and troubleshooting all of these devices. HP recommends that you pass the Designing & Troubleshooting Open Standard Networks (HP0-Y32) exam, another requirement for the HP Master ASE – Network Infrastructure [2011] certification, before this exam. The HP Networking Interoperability ILT, associated with the HP0-Y32 exam, will teach you to manage multi-vendor environments. This expertise will help you to succeed in the Migrating to Open Network Standards ILT, one of the courses recommended for this exam, and ultimately in the exam itself. To learn more about ways to prepare for the exam, continue reading, beginning at: Attend recommended ILTs.

CCIE – Routing and Switching certification Although the Migrating & Troubleshooting HP Enterprise Networks (HP0-Y37) exam tests you on your general knowledge of design and troubleshooting practices, it also assesses your ability to troubleshoot HP A-Series products in specific. You are expected to be expert in implementing switching and routing technologies on HP products, and you will be more successful in the ILTs recommended for this exam if you are. For example, you must be able to examine configurations for advanced features (in particular BGP and MPLS VPNs) in order to find and resolve potential issues. While you are probably familiar with MPLS and BGP, the exam does pose questions on two HP-specific protocols, IRF and Rapid Ring Redundancy Protocol (RRRP). IRF is introduced in several HP certification courses at several levels. RRRP is discussed only in the Troubleshooting HP Enterprise Networks ILT recommended for this exam. HP recommends that you pass the Designing & Troubleshooting Open Standard Networks (HP0-Y32) exam, another requirement for the HP Master ASE – Network Infrastructure [2011] certification, before this exam. The training that you take for that exam will ensure that you have the necessary expertise in HP products and, in particular, in managing heterogeneous environments (HP Networking Interoperability ILT). The latter type of expertise will help you to succeed in the Migrating to Open Network Standards ILT, one of the courses recommended for this exam, and ultimately in the exam itself. To learn more about ways to prepare for the exam, continue reading, beginning at: Attend recommended ILTs.

Attend recommended ILTs Three ILTs are available to help you to prepare for the Migrating & Troubleshooting HP Enterprise Networks (HP0-Y37) exam. The first two are: •

Migrating to an Open Standards Network, Rev. 11.11 or later (4 days)



Troubleshooting HP Enterprise Networks, Rev. 11.11 or later (3 days)

You are highly encouraged to attend these courses. The first provides a lab environment with Cisco and HP products, in which you can safely experiment with actual migration strategies. The other course gives you the opportunity to troubleshoot complex problems in a safe lab environment. You may also have the option of taking Accelerated Migrating & Troubleshooting HP Enterprise Networks, Rev. 11.31 or later as an alternative to Migrating to an Open Standards Network and Troubleshooting HP Enterprise Networks. This ILT combines Migrating to an Open Standards Network and Troubleshooting HP Enterprise Networks and delivers the material in a compressed timeframe: 5 days instead of 7. Qualifications for this course are listed below. You can register for these ILTs in The Learning Center of your HP Partner Portal, which is the HP Learning Management System for HP customers and partners. You will require an HP Learner ID to register for a class. Note that, while it only takes a few minutes to request the ID, the process of activating it may take up to several days. Please obtain this ID and then register for classes at least one week in advance. Costs and scheduling vary according to region.

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Migrating to an Open Standards Network Emphasizing hands-on lab activities and interactive classroom exercises, the Migrating to an Open Standards Network training focuses on the advantages of using standards-based protocols on contemporary networks. You will also learn how to migrate proprietary protocols to standards-based protocols—developing migration strategies that reduce both risk and downtime—and how to upgrade the edge and core. Topics covered After attending this course, you will be able to: •





Migrate Layer 2 switches in access and distribution layers o

Configure VLANs manually or automatically

o

Manage redundancy with or without Spanning Tree Protocol (STP)

o

Transit security features at the edge

Migrate Layer 3 switches at the core o

Hot Standby Router Protocol (HSRP), Virtual Router Redundancy Protocol (VRRP), and Intelligent Resilient Framework (IRF)

o

Transit Interior Gateway Protocol (IGP): static routes, Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF)

o

Transit Border Gateway Protocol (BGP)

o

Migrate access control lists (ACLs)

o

Transit IP Multicast

Manage Cisco and HP devices in the same network with HP Intelligent Management Center (IMC) o

Monitor and manage traffic flow with sFlow, NetFlow, and Simple Network Management Protocol (SNMP)

o

Implement access control with RADIUS and TACACS

Format offered 4-day instructor-led course with 50% lecture and 50% hands-on labs and participant-centered learning More information If you are interested, the course datasheet discusses Migrating to an Open Standards Network in more detail. It is available at http://h17007.www1.hp.com/us/en/training/certifications/technical/mase-networkinfrastructure.aspx.

Troubleshooting HP Enterprise Networks The Troubleshooting HP Enterprise Networks training focuses on the advanced switching and routing features required in enterprise-level networks. You will learn and implement an established troubleshooting methodology on enterprise-level networks based on HP A-Series switches and routers and leveraging core and backbone Layer 2 and Layer 3 technologies such as Multiprotocol Label Switching (MPLS) and Border Gateway Protocol version 4 (BGP4). As with Migrating to an Open Standards Network, this ILT emphasizes hands-on lab activities and interactive classroom exercises.

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Topics covered After attending this course, you will be able to troubleshoot all of the following: •

High-end HP A-Series switches and routers



Enterprise routing features



BGPv4



Enterprise multicast features



Multiprotocol Label Switching (MPLS), L2 and L3 virtual private networks (VPNs)



RRPP



IRF



Virtual Private LAN Service (VPLS)

Format offered 3-day instructor-led course with 10% lecture, 15% participant-centered learning, and 75% hands-on labs More information If you are interested, the course datasheet discusses Troubleshooting HP Enterprise Networks in more detail. It is available at http://h17007.www1.hp.com/us/en/training/certifications/technical/mase-networkinfrastructure.aspx.

Accelerated Migrating & Troubleshooting HP Enterprise Networks The Accelerated Migrating & Troubleshooting HP Enterprise Networks ILT combines the material presented in both the Migrating to an Open Standards Network and Troubleshooting HP Enterprise Networks ILTs. It is delivered in less time than it would take to attend both ILTs separately. NOTE Given the compressed timeframe, the Accelerated course is designed to train only experienced network administrators in these topics. To attend Accelerated Migrating & Troubleshooting HP Enterprise Networks, you should have one of the following active certifications: •

Master ASE – HP ProCurve Campus LANs [2010]



HP ASE – Network Infrastructure [2011]



CCIE – Routing & Switching



H3CSE

Topics covered After attending this course you will be able to: •

Identify the proprietary Layer 2 and Layer 3 protocols involved



Migrate a network to the open standards counterpart for each proprietary protocol



Develop step-by-step migration strategies while reducing potential downtime



Upgrade existing access layer, distribution, and core switches based on the L2 or L3 protocols they support



Troubleshoot enterprise-level networks running advanced routing and switching ptotocols like BGP and MPLS, including L2 and L3 VPNs

Format offered Five-day instructor-led, 20% lecture and 80% lab and classroom activities. The course may be delivered using a remote lab environment. More information If you are interested, the course datasheet discusses Accelerated Migrating & Troubleshooting HP Enterprise Networks in more detail. It is available at http://h17007.www1.hp.com/us/en/training/certifications/technical/mase-network-infrastructure.aspx.

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Purchase self-study materials Rather than attend the ILT, you can prepare for HP certification exams at your convenience, with HP-approved Official Exam Certification Guides. Learn at your own pace, with self-study guides written by industry experts. Each guide takes you through complex subjects with detailed, step-by-step explanations, diagrams, chapter quizzes and a practice exam. Remember that simply reading the self-study materials will not give you the hands-on experience provided by labs in the ILT. Both the study guide and exam assumes that you have real-world experience migrating and maintaining complex enterprise networks. To purchase the self-study materials associated with this exam, visit http://www.hppress.com.

Take the official HP practice exam Another option to prepare for this exam is to take the official HP practice exam. While this guide provides a few sample questions, the official HP practice exam contains a full bank of questions that cover all of the test objectives of the real certification exam. To maximize value, explanations for the right and wrong answers are provided, which will help you evaluate your readiness to pass the certification exam. Keep in mind, however, that while the practice exam is very thorough, passing it does not guarantee that you will pass the certification exam. To take the practice exams, you need to go to the ExpertOne exam page http://www.hp.com/certification/practice_exams.html and log on with a user ID. Mobile versions are available in the iTunes store and will be in Android marketplaces at a later date. Details can be found at: http://www.hp.com/certification/data_card/HP_MASE_Network_Infrastructure_2011.html Details are also available on the HP networking training site: http://h17007.www1.hp.com/us/en/training/certifications/technical/mase-network-infrastructure.aspx

Obtain hands-on experience All HP exams are designed for networking professionals with on-the-job experience, but this exam in particular requires such experience—preferably, at least five years in complex enterprise, or service provider environments. You must be able to diagnose and fix complex problems using network diagrams, network infrastructure device configurations, and the outputs of various show or display commands. The ILT might introduce you to some of these problems, but the more experience you have troubleshooting in a variety of environments, the successful you will be. The migration portion of the exam tests you thoroughly on both migration strategies and issues that you might confront during an actual migration. The Migrating to Open Standard Networks ILT introduces you to these issues; however, you might find it useful to run through the labs again after attending the ILT. You can see the results of other methods of migration that you might not have had time to try during the course.

Refer to additional materials This exam assesses your ability to troubleshoot all aspects of HP A-Series networking solutions. Therefore, you might want to refer to HP A-Series products solution guides and documentation to study topics with which you are less familiar. You can search for these materials at www.hp.com/networking/support.

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How to take the Migrating & Troubleshooting Enterprise Networks (HP0-Y37) exam Table 2 provides details about the exam. Note that this is a proctored exam, which you must complete at a scheduled time and authorized location. You will not be allowed to take any reference materials with you. Table 2: HP0-Y37 exam details Parameter

Description

Number of items

52

Item types

Multiple choice (single response) Multiple choice (multiple responses) Drag and drop

Exam time

1 ¾ hours (105 minutes)

Passing score

67 percent (35 correct answers)

Additional guidelines

No online or hard copy reference material will be allowed at the testing site.

Exam content The following testing objectives represent the specific areas of content covered in the exam. Use this outline to guide your study and to check your readiness for the exam. The exam measures your understanding of these areas. Table 3: HP0-Y37 exam content HP0-Y37

Sections/Objectives

7%

Intelligent Resilient Framework (IRF)  

14%

Rapid Ring Protection Protocol (RRPP)    

13%

Use the HP A-Series CLI to evaluate IRF configuration and performance Troubleshoot IRF split detection using Multi-Active Detection (MAD) over LACP or over BFD Describe the functioning and appropriate deployment of the Rapid Ring Protection Protocol (RRPP) in the enterprise networking Design RRPP solutions for enterprise networks, using single-ring and intersecting-ring topologies, MSTP, and RRPP Domains Configure and monitor RRPP implementations on HP A-Series switches Analyze and mitigate deficiencies in RRPP implementations using tools available at the CLI of HP A-Series switches

Border Gateway Protocol (BGP)   

Design enterprise routing solutions using interior and exterior Border Gateway Protocol (BGP) routing Troubleshoot BGP solutions on HP A-Series switches Use technologies such as route redistribution and filtering to ensure BGP interoperability with other routing protocols in the enterprise network

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HP0-Y37

Sections/Objectives

5%

Layer 3 (BGP) Multi-Protocol Label Switching (MPLS) VPNs 

 4%

MASE networking experience requirements  

18%



 

 

Replace Cisco switches at the distribution layer with HP E-Series switches Consider the order in which you migrate various features in order to reduce issues and downtime Assess the advantages of various strategies in different customer environments

Migrating and Expanding the Distribution Layer with HP A-Series   

8%

Migrate edge to HP switches and connect uplinks of edge switches to the Cisco distribution switch Configuring management options for the HP edge switches Configure edge features

Migrating and Expanding the Distribution Layer with HP E-Series 

7%

Replace the Cisco proprietary protocols CDP, PVST+, VTP, and EIGRP with the following open standards protocols: LLDP, MSTP, GVRP, and OSPF Devise a strategy to replace proprietary Layer 2 and Layer 3 protocols with their open standards counterpart while minimizing downtime

Migrating Edge Devices 

14%

Troubleshoot advanced enterprise implementations of Layer 2 and Layer 3 QoS technologies Troubleshoot advanced enterprise implementations of OSPF, RIP, and static routes

Migrating a Cisco Network to Open Standards 

10%

Design L3 MPLS VPN solutions for enterprise deployment, ensuring appropriate interaction with provider networks and internal enterprise resources Analyze and mitigate deficiencies in enterprise L3 MPLS VPNs using BGP as a signaling protocol

Replace Cisco switches at the distribution layer with HP A-Series switches Consider the order in which you migrate various features in order to reduce issues and downtime Assess the advantages of various strategies in different customer environments

Migrating Border Gateway Protocol  

Replace a BGP-configured Cisco router with a BGP-configured HP A-Series router When replacing a BGP-configured Cisco router with a BGPconfigured HP A-Series router, consider the operation order to reduce downtime

Comments on the exam During the exam, participants can make specific comments about the items (i.e. accuracy, appropriateness to audience, etc). HP welcomes these comments as part of our continuous improvement process.

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Special tips for this exam Except for a few questions that specifically discuss replacing Cisco products with HP E-Series E products, this exam focuses on the A--Series Series products in the HP portfolio. Some questions might not specifically state that a switch or router is an HP A A-Series Series product. Nonetheless, unless otherwise stated, you should answer the question according to the functionality o on HP A-Series Series products. Some questions will require you to interpret AA Series configurations or to recognize the correct commands for configuring a feature or fixing a problem.

Tips for taking HP exams Rather than emphasize simple memorization, HP exams a attempt ttempt to assess whether you have the knowledge and skills that a networking professional requires on the job. Therefore, some questions feature exhibits or scenarios. As you see, you will have an average of about three minutes per question. Before you do answer a question, take the time to read the question and all of the options carefully. If the question indicates that it features an exhibit, study the exhibit and reread the question. Make sure to select the answer that correctly responds to the questio question that is asked—not not simply an answer that includes some correct information. If allowed by the system, you might want to answer the questions about which you are sure first and then move back to the others. If the question asks for more than one answer, rremember emember to select each correct answer. You do not receive partial credit for a partially correct answer.

Register To register for this exam, visit the HP ExpertOne exam page at: http://www.hp.com/certification/learn_more_about_exams.html You will need an HP Learner ID

Sample questions Use these questions to help to assess whether you are ready to take the exam. An appendix at the end of this guide provides answers and explanation explanations. 1. A company originally had a Cisco Cisco-only only network but wanted to replace the two Cisco switches at the distribution layer with two HP E6200 yl Series switches. You have begun the migration by removing one of the Cisco distribution switches and connecting one of the new HP E-Series E switches to the existing network in parallel. The exhibit displays the network topology at this point in the migration.

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Figure 1: Exhibit for question 1 At this point, the Cisco distribution switch runs Extended Internal Gateway Routing Protocol (EIGRP) and Hot Router Standby Protocol (HSRP), the Cisco core switch runs EIGRP and Open Shortest Path First (OSPF), and the HP E6200 yl switch runs OSPF and Virtual Router Redundancy Protocol (VRRP). Edge switches and endpoints in VLANs 1, 2, 10, and 20 use 10.1.X.254 as their default gateway address (X being their VLAN ID). This is the virtual HSRP address configured on the Cisco distribution switch. You have checked that the HP switch and Cisco core switch have achieved OSPF adjacency. The network is not experiencing any connectivity issues at this point. You now disable VLAN 10 on the Cisco distribution switch and enable VRRP on VLAN 10 on the HP switch. Based on the configurations below, what issue will occur? a.

Endpoints in VLAN 10 can no longer reach the core.

b.

Devices in VLANs 1, 2 and 20 can no longer reach devices in VLAN 10.

c.

The HP E-Series router cannot route traffic from endpoints in VLAN to endpoints in VLANs 2 and 20.

d.

Endpoints in all VLANs lose connectivity entirely for about five minutes.

Cisco distribution switch routing configuration ip subnet-zero ip routing ! interface Vlan1 ip address 10.1.1.1 255.255.255.0 standby 1 ip 10.1.1.254 standby 1 priority 255 standby 1 preempt ! interface Vlan2 ip address 10.1.2.1 255.255.255.0 standby 1 ip 10.1.2.254 standby 1 priority 255 standby 1 preempt ! interface Vlan10 ip address 10.1.10.1 255.255.255.0 ip helper-address 10.1.2.100 standby 10 ip 10.1.10.254 standby 10 priority 255 standby 10 preempt ! interface Vlan20 ip address 10.1.20.1 255.255.255.0 ip helper-address 10.1.2.100 standby 20 ip 10.1.20.254 standby 20 priority 255 standby 20 preempt ! interface Vlan111 ip address 10.0.111.1 255.255.255.0 ! ! router eigrp 1 network 10.0.0.0

Cisco core switch routing configuration

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ip subnet-zero ip routing ! Interface Vlan111 ip address 10.0.111.3 255.255.255.0 ! interface Vlan121 ip address 10.0.121.3 255.255.255.0 ! router eigrp 1 network 10.0.0.0 distance eigrp 130 170 ! router ospf 1 network 10.0.0.0 0.0.0.255 area 0 network 10.0.111.0 0.0.0.255 area 0 network 10.0.121.0 0.0.0.255 area 0

HP E6200 yl switch 1 routing configuration ip routing vlan 1 ip address 10.1.1.5 255.255.255.0 no untagged 4 untagged 1-3,5-24 exit vlan 2 ip address 10.1.2.5 255.255.255.0 tagged 1-3 exit vlan 10 ip helper-address 10.1.2.100 ip address 10.1.10.5 255.255.255.0 tagged 1-3 exit vlan 20 ip helper-address 10.1.2.100 ip address 10.1.20.5 255.255.255.0 tagged 1-3 exit vlan 111 name "VLAN111" untagged 4 ip address 10.0.111.5 255.255.255.0 exit router ospf area 0.0.0.1 stub 10 area backbone exit router vrrp router vrrp virtual-ip-ping vlan 1 ip ospf 10.1.1.5 area 0.0.0.1 vrrp vrid 1 backup virtual-ip-address 10.1.1.254 255.255.255.0 priority 254 exit exit

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vlan 2 ip ospf 10.1.2.5 area 0.0.0.1 vrrp vrid 2 backup virtual-ip-address 10.1.2.254 255.255.255.0 priority 254 exit exit vlan 10 ip ospf 10.1.10.5 area 0.0.0.1 vrrp vrid 10 backup virtual-ip-address 10.1.10.254 255.255.255.0 priority 254 exit exit vlan 20 ip ospf 10.1.20.5 area 0.0.0.1 vrrp vrid 20 backup virtual-ip-address 10.1.20.254 255.255.255.0 exit exit exit vlan 111 ip ospf 10.1.111.5 area backbone exit

2. Examine the HP A A-Series Series device’s BGP routing table, a portion of which is displayed below. Which combination of BGP attributes will be selected as the preferred route for prefix 6.0.0.0/8? a.

Preference, 0; AS Path, 60 2 23; Origin Type, ?

b.

Preference, 1; AS Path, 60 2 23; Origin Type, i

c.

Preference, 1; AS Path, 50 23; Origin Type, ?

d.

Preference, 0; AS Path, 50 23; Origin Type, i

BGP Local router ID is 172.21 172.21.0.1 Status codes: * - valid, ^ - VPNv4 best, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete

*i *i *i *i

Network

NextHop

6.0.0.0 6.0.0.0 6.0.0.0 6.0.0.0

10.0.0.2 10.0.0.3 10.0.0.4 10.0.0.5

MED 0 0 0 0

LocPrf 90 90 90 90

PrefVal Path/Ogn 0 1 1 0

60 60 50 50

2 23? 2 23i 23? 23i

3. The 10 Gigabit Ethernet link that connects the HP A-Series Series switches labeled Member Membe 3 and Member 4 in the exhibit fails (T3/0/28 to T4/0/28).. After several minutes, the link is reestablished. reest

Figure 2: Exhibit for question 3 Based on the command output displayed below, what happens after the link is reestablished? a.

IRF Member 2 remains Master.

b.

IRF Member 3 remains Master.

c.

IRF Member 4 remains Master Master.

16

d.

The IRF device has two masters until all switches reboot.

display vlan 4003 VLAN ID: 4003 VLAN Type: static Route Interface: configured Description: VLAN 4003 Name: VLAN 4003 Tagged Ports: none Untagged Ports: GigabitEthernet2/0/2 GigabitEthernet5/0/2 display mad verbose Current MAD status: Detect Excluded ports(configurable): Excluded ports(can not be configured): Ten-GigabitEthernet2/0/25 Ten-GigabitEthernet2/0/27 Ten-GigabitEthernet3/0/25 Ten-GigabitEthernet3/0/27 Ten-GigabitEthernet3/0/28 Ten-GigabitEthernet4/0/25 Ten-GigabitEthernet4/0/27 Ten-GigabitEthernet4/0/28 Ten-GigabitEthernet5/0/25 Ten-GigabitEthernet5/0/27 MAD LACP disabled. MAD BFD enabled interface: Vlan-interface4003 mad ip address 192.168.1.2 255.255.255.0 mad ip address 192.168.1.3 255.255.255.0 mad ip address 192.168.1.4 255.255.255.0 mad ip address 192.168.1.5 255.255.255.0

member member member member

2 3 4 5

display irf Switch Role Priority CPU-Mac 2 Slave 13 0023-89d9-b190 3 Slave 20 0023-89d9-c162 *4 Master 22 0023-89d6-7c53 +5 Slave 18 0023-89d9-b793 -------------------------------------------------* indicates the device is the master. + indicates the device through which the user logs in. The Bridge MAC of the IRF is: 0023-89d6-7c52 Auto upgrade : yes Mac persistent : 6 min Domain ID : 0

display irf topology Topology Info ------------------------------------------------------------------------IRF-Port1 IRF-Port2 Switch Link neighbor Link neighbor Belong To 2 UP 3 DIS -0023-89d6-7c53 5 DIS -UP 4 0023-89d6-7c53 3 UP 4 UP 2 0023-89d6-7c53 4 UP 5 DIS 3 0023-89d6-7c53

17

display irf configuration MemberID NewID IRF-Port1 2 2 Ten-GigabitEthernet2/0/25 Ten-GigabitEthernet2/0/27 3 3 Ten-GigabitEthernet3/0/28 4

4

5

5

Ten-GigabitEthernet4/0/25 Ten-GigabitEthernet4/0/27 disable

IRF-Port2 disable Ten-GigabitEthernet3/0/25 Ten-GigabitEthernet3/0/27 Ten-GigabitEthernet4/0/28 Ten-GigabitEthernet5/0/25 Ten-GigabitEthernet5/0/27

4. Switch B, an HP A-Series switch, is participating in an RRPP domain. View the Rapid RRPP statistics provided below. What explains what you see? a.

The Master has detected the failure of the primary port on this switch using the polling method, as indicated by 0 Link Down packets.

b.

The primary port has failed, but the Master has not yet reported the failure, as indicated by 0 Common Flush FDB packets.

c.

As is typical of normal behavior, the Transit switch is receiving hellos on the secondary port and sending them on the primary port but is not logging the packets.

d.

The primary and secondary ports have been reversed and must be fixed before the ring can become complete.

display rrpp statistics domain 1 Ring ID : 1 Ring Level : 0 Node Mode : Transit Active Status : Yes Primary port : GigabitEthernet2/0/1 Packet Link Common Complete Edge Major Packet Direct Hello Down Flush FDB Flush FDB Hello Fault Total ----------------------------------------------------------------------------Send 0 0 0 0 0 0 0 Rcv 0 0 0 0 0 0 0 Secondary port: GigabitEthernet2/0/2 Packet Link Common Complete Edge Major Packet Direct Hello Down Flush FDB Flush FDB Hello Fault Total ----------------------------------------------------------------------------Send 0 0 0 0 0 0 0 Rcv 0 0 0 1 0 0 1

5. A customer has a Cisco-based network running the Cisco proprietary protocol Per-VLAN Spanning Tree Plus (PVST+). The customer now wants to migrate to the open-standard Multiple Spanning Tree Protocol (MSTP). The customer does not have a scheduled outage and wants you to complete the migration in an active network with minimal downtime. Which two statements correctly describe the proper sequence? (Select two.) a.

You should run PVST+ and MSTP in parallel throughout the migration.

b.

You should migrate the distribution layer switch that will be the CIST root first.

c.

You should disable PVST+ on all switches only after you have verified that all of the edge switches have joined the region.

d.

You should configure all MSTP settings on switches before changing to MSTP mode.

e.

You should disable Cisco proprietary features such as uplinkfast and backbonefast before migrating any switches to MSTP.

Conclusion HP wishes you success in the ExpertONE Program and in passing the exam for which you are preparing.

18

Appendix: Answers to the sample questions This section provides answers and explanations for the sample questions. 1. A company originally had a Cisco Cisco-only only network but wanted to replace the two Cisco switches at the distribution layer wi with th two HP E6200 yl Series switches. You have begun the migration by removing one of the Cisco distribution switches and connecting one of the new HP E-Series E switches to the existing network in parallel. The exhibit displays the network topology at this point po in the migration.

Figure 1: Exhibit for question 1 At this point, the Cisco distribution switch runs Extended Internal Gateway Routing Protocol (EIGRP) and Hot Router Standby Protocol (HSRP), the Cisco core switch runs EIGRP and Open Shortest Path First (OSPF), and the HP E6200 yl switch runs OSPF and Virt Virtual ual Router Redundancy Protocol (VRRP). Edge switches and endpoints in VLANs 1, 2, 10, and 20 use 10.1.X.254 as their default gateway address (X being their VLAN ID). This is the virtual HSRP address configured on the Cisco distribution switch. You have checked ecked that the HP switch and Cisco core switch have achieved OSPF adjacency. The network is not experiencing any connectivity issues at this point. You now disable VLAN 10 on the Cisco distribution switch and enable VRRP on VLAN 10 on the HP switch. Based on the configurations below, what issue will occur? a.

Endpoints in VLAN 10 can no longer reach the core.

b.

Endpoints in VLANs 2 and 20 can no longer reach devices in VLAN 10.

c.

The HP E E-Series Series router cannot route traffic from endpoints in VLAN to endpoints in VLANs 2 and 20.

d.

Endpoints in all VLANs lose connectivity entirely for about five minutes.

Explanation:: The issue begins when the E E-Series Series switch begins to route traffic in VLAN 10 while the Cisco distribution switch continues to route traffic in VLANs 1, 2, and 20. Therefore, you can expect that the issue will relate to routing. What happens when you disable VLAN 10 on the Cisco switch and the HP switch begins to route for that VLAN? You should already be thinking of potential problems: •

The HP switch VRRP address might be misconfigured, which would prevent the endpoints in VLAN 10 from reaching their default gateway.



The Cisco core switch might not be advertising the correct routes in OSPF, so the HP switch cannot route traffic correctly.



The Cisco isco switch, which is still routing traffic some traffic, might not have a route to VLAN 10, which is no longer a directly connected network.

19

You now check the configuration for each problem. You determine that: •

The HP switch has the correct virtual IP address in VLAN 10.



The Cisco core switch is running OSPF on all local networks, including those at the core. Because the question indicated that this switch and the HP switch have achieved adjacency, you know that these networks should be advertised.



The Cisco distribution switch does not have any way route to the VLAN 10 subnet. The HP switch is the only router on that VLAN, and it runs only OSPF while the Cisco distribution switch runs only EIGRP. Therefore, the Cisco distribution switch cannot learn the route from the HP switch. The core distribution switch, which does learn about the VLAN 10 subnet using OSPF, does not redistribute routes between EIGRP and OSPF. Nor does it advertise a default route to the distribution switch. Finally, the Cisco distribution switch itself has no default route to the core.

You now know that the Cisco distribution switch cannot route to VLAN 10. Because it is routing traffic from endpoints in VLAN 1, 2, and 20, connectivity between these subnets is disrupted. Answer b is correct. Because the HP switch can route to the core, and the core can route back to VLAN 10, answer a is incorrect. Answer c is incorrect because the HP switch has directly connected routes to VLAN 2 and 20. Although VRRP is not enabled on those interfaces, and endpoints are not using the HP switch as the default gateway in the associated subnets, the VLAN interfaces themselves are enabled. The HP switch can therefore route traffic from VLAN 10 to VLAN 2 or 20. The routing problem occurs when the Cisco distribution switch attempts to route the traffic back to VLAN 10 (as indicated above, you would need to solve the problem by migrating the Cisco switch to OSPF, or giving it a default route, or so forth). Answer d is incorrect. As discussed earlier, some traffic, including traffic from each user VLAN to the core, continues uninterrupted. Cisco distribution switch routing configuration ip subnet-zero ip routing ! interface Vlan1 ip address 10.1.1.1 255.255.255.0 standby 1 ip 10.1.1.254 standby 1 priority 255 standby 1 preempt ! interface Vlan2 ip address 10.1.2.1 255.255.255.0 standby 1 ip 10.1.2.254 standby 1 priority 255 standby 1 preempt ! interface Vlan10 ip address 10.1.10.1 255.255.255.0 ip helper-address 10.1.2.100 standby 10 ip 10.1.10.254 standby 10 priority 255 standby 10 preempt ! interface Vlan20 ip address 10.1.20.1 255.255.255.0 ip helper-address 10.1.2.100 standby 20 ip 10.1.20.254 standby 20 priority 255 standby 20 preempt !

20

interface Vlan111 ip address 10.0.111.1 255.255.255.0 ! ! router eigrp 1 network 10.0.0.0

Cisco core switch routing configuration ip subnet-zero ip routing ! Interface Vlan111 ip address 10.0.111.3 255.255.255.0 ! interface Vlan121 ip address 10.0.121.3 255.255.255.0 ! router eigrp 1 network 10.0.0.0 distance eigrp 130 170 ! router ospf 1 network 10.0.0.0 0.0.0.255 area 0 network 10.0.111.0 0.0.0.255 area 0 network 10.0.121.0 0.0.0.255 area 0

HP E6200 yl switch 1 routing configuration ip routing vlan 1 ip address 10.1.1.5 255.255.255.0 no untagged 4 untagged 1-3,5-24 exit vlan 2 ip address 10.1.2.5 255.255.255.0 tagged 1-3 exit vlan 10 ip helper-address 10.1.2.100 ip address 10.1.10.5 255.255.255.0 tagged 1-3 exit vlan 20 ip helper-address 10.1.2.100 ip address 10.1.20.5 255.255.255.0 tagged 1-3 exit vlan 111 name "VLAN111" untagged 4 ip address 10.0.111.5 255.255.255.0 exit router ospf area 0.0.0.1 stub 10 area backbone exit router vrrp router vrrp virtual-ip-ping vlan 1 ip ospf 10.1.1.5 area 0.0.0.1 vrrp vrid 1 backup virtual-ip-address 10.1.1.254 255.255.255.0 priority 254 exit exit

21

vlan 2 ip ospf 10.1.2.5 area 0.0.0.1 vrrp vrid 2 backup virtual-ip-address 10.1.2.254 255.255.255.0 priority 254 exit exit vlan 10 ip ospf 10.1.10.5 area 0.0.0.1 vrrp vrid 10 backup virtual-ip-address 10.1.10.254 255.255.255.0 priority 254 exit exit vlan 20 ip ospf 10.1.20.5 area 0.0.0.1 vrrp vrid 20 backup virtual-ip-address 10.1.20.254 255.255.255.0 exit exit exit vlan 111 ip ospf 10.1.111.5 area backbone exit

2. Examine the HP A-Series device’s BGP routing table, a portion of which is displayed below. Which combination of BGP attributes will be selected as the preferred route for prefix 6.0.0.0/8? a.

Preference, 0; AS Path, 60 2 23; Origin Type, ?

b.

Preference, 1; AS Path, 60 2 23; Origin Type, i

c.

Preference, 1; AS Path, 50 23; Origin Type, ?

d.

Preference, 0; AS Path, 50 23; Origin Type, i

BGP Local router ID is 172.21.0.1 Status codes: * - valid, ^ - VPNv4 best, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete

*i *i *i *i

Network

NextHop

6.0.0.0 6.0.0.0 6.0.0.0 6.0.0.0

10.0.0.2 10.0.0.3 10.0.0.4 10.0.0.5

MED 0 0 0 0

LocPrf 90 90 90 90

PrefVal Path/Ogn 0 1 1 0

60 60 50 50

2 23? 2 23i 23? 23i

Explanation: BGP examines different attributes in turn to select the preferred route: •

If the next hop of this route is unreachable, the route is discarded. All of these routes are valid, so this criterion does not help to select between them.



Select the route with the highest preference value The second and third routes listed have a preference value of 1. You can narrow the selection to these two routes, but you must continue examining other criteria to choose between them.



Select the route with a higher local precedence Both routes have the same local preference.



Select the route originated at the local router. Neither route originated at the local router.

22



Select elect the route with shortest AS path. The third route listed has a shorter AS path, so this route is selected. The other criteria (origin (origi type; MED value; source of the route whether eBGP, confederation, or iBGP; the hop cost, advertising router ID) do not matter.

Therefore, answer c is correct. 3. The 10 Gigabit Ethernet link that connects the HP A-Series Series switches labeled Member Membe 3 and Member 4 in the exhibit fails (T3/0/28 to T4/0/28).. After several minutes, the link is reestablished.

Figure 2: Exhibit for question 3 Based on the command output displayed below, what happens after the link is reestablished? a.

IRF Memb Member 2 remains Master.

b.

IRF Member 3 remains Master.

c.

IRF Member 4 remains Master.

d.

The IRF device has two masters until all switches reboot.

Explanation:: As shown in the output for the display irf command, Member 4 was originally Master. However, when the link between 3/0/28 and 4/0/28 failed, the IRF divided into two IRF groups. Member 4 remained Master in the group with Member 5. Member 3 was elected as the Master of the other group because Member 3 has the higher priority. The display mad verbose command d output indicates that BFD MAD is active. In other words, MAD detected that the single IRF device had become two separate IRF devices (sometimes called a split brain situation). MAD selected the IRF device that was using Member 3 as the Master to remain active a because Member 3 has the lower IP address for MAD. MAD then shut down all ports on Members 4 and 5. When the link is reestablished, Member 3 remains Master because the current Master always has highest priority in remaining Master. Answer b is corre correct. display vlan 4003 VLAN ID: 4003 VLAN Type: static Route Interface: configured Description: VLAN 4003 Name: VLAN 4003 Tagged Ports: none Untagged Ports: GigabitEthernet2/0/2 GigabitEthernet5/0/2

23

display mad verbose Current MAD status: Detect Excluded ports(configurable): Excluded ports(can not be configured): Ten-GigabitEthernet2/0/25 Ten-GigabitEthernet2/0/27 Ten-GigabitEthernet3/0/25 Ten-GigabitEthernet3/0/27 Ten-GigabitEthernet3/0/28 Ten-GigabitEthernet4/0/25 Ten-GigabitEthernet4/0/27 Ten-GigabitEthernet4/0/28 Ten-GigabitEthernet5/0/25 Ten-GigabitEthernet5/0/27 MAD LACP disabled. MAD BFD enabled interface: Vlan-interface4003 mad ip address 192.168.1.2 255.255.255.0 mad ip address 192.168.1.3 255.255.255.0 mad ip address 192.168.1.4 255.255.255.0 mad ip address 192.168.1.5 255.255.255.0

member member member member

2 3 4 5

display irf Switch Role Priority CPU-Mac 2 Slave 13 0023-89d9-b190 3 Slave 20 0023-89d9-c162 *4 Master 22 0023-89d6-7c53 +5 Slave 18 0023-89d9-b793 -------------------------------------------------* indicates the device is the master. + indicates the device through which the user logs in. The Bridge MAC of the IRF is: 0023-89d6-7c52 Auto upgrade : yes Mac persistent : 6 min Domain ID : 0

display irf topology Topology Info ------------------------------------------------------------------------IRF-Port1 IRF-Port2 Switch Link neighbor Link neighbor Belong To 2 UP 3 DIS -0023-89d6-7c53 5 DIS -UP 4 0023-89d6-7c53 3 UP 4 UP 2 0023-89d6-7c53 4 UP 5 DIS 3 0023-89d6-7c53

display irf configuration MemberID NewID IRF-Port1 2 2 Ten-GigabitEthernet2/0/25 Ten-GigabitEthernet2/0/27 3 3 Ten-GigabitEthernet3/0/28 4

4

5

5

Ten-GigabitEthernet4/0/25 Ten-GigabitEthernet4/0/27 disable

IRF-Port2 disable Ten-GigabitEthernet3/0/25 Ten-GigabitEthernet3/0/27 Ten-GigabitEthernet4/0/28 Ten-GigabitEthernet5/0/25 Ten-GigabitEthernet5/0/27

24

4. Switch B, an HP A-Series switch, is participating in an RRPP domain. View the Rapid RRPP statistics provided below. What explains what you see? a.

The Master has detected the failure of the primary port on this switch using the polling method, as indicated by 0 Link Down packets.

b.

The primary port has failed, but the Master has not yet reported the failure, as indicated by 0 Common Flush FDB packets.

c.

As is typical of normal behavior, the Transit switch is receiving hellos on the secondary port and sending them on the primary port but not logging the packets.

d.

The primary and secondary ports have been reversed and must be fixed before the ring can become complete.

Explanation: As you see in the output for the display rrpp statistics command, this switch operates in Transit mode. During normal operations, Transit switches track receive Hello packets on the secondary port and forward those packets on their primary port. However, they do not log statistics for these hellos. The table shows exactly this situation. Therefore, answer c is correct. Answers a and b are incorrect because there is no reason to believe from this display that the primary port has failed. Answer d is incorrect because the switch has received a complete flush FDB packet indicatitng the the ring has been established successfully. display rrpp statistics domain 1 Ring ID : 1 Ring Level : 0 Node Mode : Transit Active Status : Yes Primary port : GigabitEthernet2/0/1 Packet Link Common Complete Edge Major Packet Direct Hello Down Flush FDB Flush FDB Hello Fault Total ----------------------------------------------------------------------------Send 0 0 0 0 0 0 0 Rcv 0 0 0 0 0 0 0 Secondary port: GigabitEthernet2/0/2 Packet Link Common Complete Edge Major Packet Direct Hello Down Flush FDB Flush FDB Hello Fault Total ----------------------------------------------------------------------------Send 0 0 0 0 0 0 0 Rcv 0 0 0 1 0 0 1

5. A customer has a Cisco-based network running the Cisco proprietary protocol Per-VLAN Spanning Tree Plus (PVST+). The customer now wants to migrate to the open-standard Multiple Spanning Tree Protocol (MSTP). The customer does not have a scheduled outage and wants you to complete the migration in an active network with minimal downtime. Which two statements correctly describe the proper sequence? (Select two.) a.

You should run PVST+ and MSTP in parallel throughout the migration.

b.

You should migrate the distribution layer switch that will be the CIST root first.

c.

You should disable PVST+ on all switches only after you have verified that all switches have activated MSTP and have joined the region.

d.

You should configure all MSTP settings on switches before changing to MSTP mode.

e.

You should disable Cisco proprietary features such as uplinkfast on edge switches before migrating any switches to MSTP.

25

Explanation:: Answer d is the first correct answer. You can configure MSTP settings before actually changing any switches to MSTP mode. The configuration does not affect the network but ensures that everything is in place for a quick migration when you do begin to change switches to MSTP mode. Answer b is also correct. You must migrate the root for the CIST and other spanning trees (which is typically at the distribution layer) to MSTP first. Otherwise, the switch that you migrate to MSTP first will detect PVST+ inconsistencies due to receiving PVST+ BPDUs with a better priority than its own. These errors can cause the switch to close the uplink, disrupting connectivity. Cisco switches cannot operate in PVST+ and MSTP mode at the same time, so answer a is incorrect. Similarly, answer c is incorrect. Because the switches cannot run PVST+ at the same time as MSTP, you cannot activate MSTP before disabling PVST+. Answer e is also incorrect. These features are useful as long as PVST+ is running, and there is no reason to disable them until all switches are running MSTP.

To learn more about HP networking, visit www.hp.com/networking © Copyright 2011 Hewlett-Packard Packard Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing ing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial erro errors or omissions contained herein. HP0-Y37: Migrating & Troubleshooting Enterprise Networks Exam Preparation Guide / May 2011