H3C IPv6 IS-IS Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright © 2017 New H3C Technologies Co., Ltd. All rights reserved. No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co., Ltd. The information in this document is subject to change without notice.

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring IPv6 IS-IS· 1

Network configuration· 1

Analysis· 2

Software versions used· 2

Procedures· 2

Configuring Switch A· 2

Configuring Switch B· 2

Configuring Switch C· 3

Configuring Switch D·· 4

Configuring Switch E· 4

Verifying the configuration· 5

Configuration files· 6

Related documentation· 9

 

Introduction

This document provides IPv6 IS-IS configuration examples.

Prerequisites

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of IPv6 IS-IS.

Example: Configuring IPv6 IS-IS

Network configuration

As shown in Figure 1, the company's headquarters and the branch run IPv6 IS-IS. The partner runs OSPFv3.

Configure the switches to meet the following requirements:

·     Reduce traffic for Switch A and Switch B because they have relative low performance.

·     The Marketing department can reach the Finance department, the branch, and the partner.

·     The Finance department and the branch cannot reach each other, and the branch does not have a route to the Finance department.

Figure 1 Network diagram

 

Analysis

To meet the network requirements, you must perform the following tasks:

·     To reduce traffic for Switch A and Switch B, configure them as Level-1 routers to allow communication only between the Marketing department and the Finance department.

·     Configure route redistribution between IPv6 IS-IS and OSPFv3 on Switch D to allow communication between the Marketing department and the partner.

·     Configure Switch C to use a prefix list to advertise only network 3001:1::/64 to Level-2, so that the branch does not have a route to the Finance department.

Software versions used

This configuration example was created and verified on S7500X-CMW710-R7536P05.

Procedures

Configuring Switch A

# Configure an IPv6 address for VLAN-interface 11.

<SwitchA> system-view

[SwitchA] interface vlan-interface 11

[SwitchA-Vlan-interface11] ipv6 address 2001:1::1 64

[SwitchA-Vlan-interface11] quit

# Configure IPv6 addresses for other interfaces, as shown in Figure 1. (Details not shown.)

# Configure IPv6 IS-IS.

[SwitchA] isis 1

[SwitchA-isis-1] is-level level-1

[SwitchA-isis-1] network-entity 10.3001.0001.0001.00

[SwitchA-isis-1] address-family ipv6

[SwitchA-isis-1-ipv6] quit

[SwitchA-isis-1] quit

[SwitchA] interface vlan-interface 11

[SwitchA–vlan-interface 11] isis ipv6 enable 1

[SwitchA–vlan-interface 11] quit

[SwitchA] interface vlan-interface 100

[SwitchA–Vlan-interface100] isis ipv6 enable 1

[SwitchA–Vlan-interface100] quit

Configuring Switch B

# Configure an IPv6 address for VLAN-interface 12.

<SwitchB> system-view

[SwitchB] interface vlan-interface 12

[SwitchB-Vlan-interface12] ipv6 address 2001:2::1 64

[SwitchB-Vlan-interface12] quit

# Configure IPv6 addresses for other interfaces, as shown in Figure 1. (Details not shown.)

# Configure IPv6 IS-IS.

[SwitchB] isis 1

[SwitchB-isis-1] is-level level-1

[SwitchB-isis-1] network-entity 10.3001.0002.0001.00

[SwitchB-isis-1] address-family ipv6

[SwitchB-isis-1-ipv6] quit

[SwitchB-isis-1] quit

[SwitchB] interface vlan-interface 12

[SwitchB–Vlan-interface12] isis ipv6 enable 1

[SwitchB–Vlan-interface12] quit

[SwitchB] interface vlan-interface 200

[SwitchB–Vlan-interface 200] isis ipv6 enable 1

[SwitchB–Vlan-interface 200] quit

Configuring Switch C

# Configure an IPv6 address for VLAN-interface 11.

<SwitchC> system-view

[SwitchC] interface vlan-interface 11

[SwitchC-Vlan-interface11] ipv6 address 2001:1::2 64

[SwitchC-Vlan-interface11] quit

# Configure IPv6 addresses for other interfaces, as shown in Figure 1. (Details not shown.)

# Configure IPv6 IS-IS.

[SwitchC] isis 1

[SwitchC-isis-1] is-level level-1

[SwitchC-isis-1] network-entity 10.2001.0010.0001.00

[SwitchC-isis-1] address-family ipv6

[SwitchC-isis-1-ipv6] quit

[SwitchC-isis-1] quit

[SwitchC] interface vlan-interface 10

[SwitchC–Vlan-interface10] isis ipv6 enable 1

[SwitchC–Vlan-interface10] quit

[SwitchC] interface vlan-interface 11

[SwitchC–Vlan-interface11] isis ipv6 enable 1

[SwitchC–Vlan-interface11] quit

[SwitchC] interface vlan-interface 12

[SwitchC–Vlan-interface12] isis ipv6 enable 1

[SwitchC–Vlan-interface12] quit

# Configure route leaking from Level-1 to Level-2, and use prefix list 1 to advertise only network 3001:1::/64 to Level-2.

[SwitchC] ipv6 prefix-list 1 permit 3001:1:: 64

[SwitchC] isis 1

[SwitchC] address-family ipv6

[SwitchC-isis-1-ipv6] import-route isisv6 level-1 into level-2 filter-policy prefix-list 1

[SwitchC-isis-1-ipv6] quit

[SwitchC-isis-1] quit

Configuring Switch D

# Configure an IPv6 address for VLAN-interface 10.

<SwitchD> system-view

[SwitchD] interface vlan-interface 10

[SwitchD- Vlan-interface10] ipv6 address 2001:10::2 64

[SwitchD- Vlan-interface10] quit

# Configure IPv6 addresses for other interfaces, as shown in Figure 1. (Details not shown.)

# Configure IPv6 IS-IS.

[SwitchD] isis 1

[SwitchD-isis-1] is-level level-2

[SwitchD-isis-1] network-entity 20.2001.0020.0001.00

[SwitchD-isis-1] address-family ipv6

[SwitchD-isis-1-ipv6] quit

[SwitchD-isis-1] quit

[SwitchD] interface vlan-interface 10

[SwitchD–Vlan-interface10] isis ipv6 enable 1

[SwitchD–Vlan-interface10] quit

[SwitchD] interface vlan-interface 20

[SwitchD–Vlan-interface20] isis ipv6 enable 1

[SwitchD–Vlan-interface20] quit

# Configure OSPFv3.

[SwitchD] ospfv3

[SwitchD-ospfv3-1] router-id 4.4.4.4

[SwitchD-ospfv3-1] quit

[SwitchD] interface vlan-interface 20

[SwitchD–Vlan-interface20] ospfv3 1 area 0

[SwitchD–Vlan-interface20] quit

# Redistribute OSPFv3 and direct routes into IPv6 IS-IS.

[SwitchD] isis 1

[SwitchD] address-family ipv6

[SwitchD-isis-1-ipv6] import-route ospfv3

[SwitchD-isis-1-ipv6] import-route direct

[SwitchD-isis-1-ipv6] quit

# Redistribute IPv6 IS-IS and direct routes into OSPFv3.

[SwitchD] ospfv3 1

[SwitchD-ospfv3-1] import-route isisv6 1

[SwitchD-ospfv3-1] import-route direct

Configuring Switch E

# Configure an IPv6 address for VLAN-interface 20.

<SwitchE> system-view

[SwitchE] interface vlan-interface20

[SwitchE-Vlan-interface12] ipv6 address 2001:20::2 64

[SwitchE-Vlan-interface12] quit

# Configure IPv6 addresses for other interfaces, as shown in Figure 1. (Details not shown.)

# Configure OSPFv3.

[SwitchE] ospfv3

[SwitchE-ospfv3-1] router-id 5.5.5.5

[SwitchE-ospfv3-1] quit

[SwitchE] interface vlan-interface 20

[SwitchE–Vlan-interface 20] ospfv3 1 area 0

[SwitchE–Vlan-interface 20] quit

[SwitchE] interface vlan-interface 300

[SwitchE–Vlan-interface 300] ospfv3 1 area 0

[SwitchE–Vlan-interface 300] quit

Verifying the configuration

# Verify that the branch can reach the Marketing department, but cannot reach the Finance department.

[SwitchD] display isis route ipv6

 

                         Route information for IS-IS(1)

                         ------------------------------

 

                         Level-2 IPv6 Forwarding Table

                         -----------------------------

 

 Destination : 2001:10::                               PrefixLen: 64

 Flag        : D/L/-                                   Cost     : 10

 Next Hop    : Direct                                  Interface: Vlan10

 

 Destination : 2001:1::                                PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 20

 Next Hop    : FE80::7625:8AFF:FE02:4D13               Interface: Vlan10

 

 Destination : 2001:2::                                PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 20

 Next Hop    : FE80::7625:8AFF:FE02:4D13               Interface: Vlan10

 

 Destination : 3001:1::                                PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 30

 Next Hop    : FE80::7625:8AFF:FE02:4D13               Interface: Vlan10

 

      Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set

# Verify that the company can communicate with the partner.

·     Display the IPv6 IS-IS routing table on Switch C.

[SwitchC] display isis route ipv6 level-2

 

                         Route information for IS-IS(1)

                         ------------------------------

 

                         Level-2 IPv6 Forwarding Table

                         -----------------------------

 

 Destination : 2001:10::                               PrefixLen: 64

 Flag        : D/L/-                                   Cost     : 10

 Next Hop    : Direct                                  Interface: Vlan10

 

 Destination : 2001:1::                                PrefixLen: 64

 Flag        : D/L/-                                   Cost     : 10

 Next Hop    : Direct                                  Interface: Vlan11

 

 

 Destination : 2001:2::                                PrefixLen: 64

 Flag        : D/L/-                                   Cost     : 10

 Next Hop    : Direct                                  Interface: Vlan12

 

 Destination : 2001:20::                               PrefixLen: 64

 Flag        : R/L/-                                   Cost     : 20

 Next Hop    : FE80::BAAF:67FF:FE30:3304               Interface: Vlan10

 

 Destination : 3001:200::                              PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 20

 Next Hop    : FE80::BAAF:67FF:FE30:3304               Interface: Vlan10

 

      Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set

·     Ping 3001:200::1 from the interface VLAN-interface 100 on Switch A.

[SwitchA] ping ipv6 –a 3001:1::1 3001:200::1

Ping6(56 data bytes) 2001:10::1 --> 3001:200::1, press CTRL_C to break

56 bytes from 3001:200::1, icmp_seq=0 hlim=61 time=7.230 ms

56 bytes from 3001:200::1, icmp_seq=1 hlim=61 time=3.449 ms

56 bytes from 3001:200::1, icmp_seq=2 hlim=61 time=2.779 ms

56 bytes from 3001:200::1, icmp_seq=3 hlim=61 time=2.652 ms

56 bytes from 3001:200::1, icmp_seq=4 hlim=61 time=2.558 ms

 

--- Ping6 statistics for 3001:200::1 ---

5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss

round-trip min/avg/max/std-dev = 2.558/3.734/7.230/1.776 ms

Configuration files

·     Switch A:

#

isis 1

 is-level level-1

 network-entity 10.3001.0001.0001.00

 #

 address-family ipv6 unicast

#

vlan 11

#

vlan 100

#

interface Vlan-interface11

 isis ipv6 enable 1

 ipv6 address 2001:1::1/64

#

interface Vlan-interface100

 isis ipv6 enable 1

 ipv6 address 3001:1::1/64

#

·     Switch B:

#

isis 1

 is-level level-1

 network-entity 10.3001.0002.0001.00

 #

 address-family ipv6 unicast

#

vlan 12

#

vlan 200

#

interface Vlan-interface12

 isis ipv6 enable 1

 ipv6 address 2001:2::1/64

#

interface Vlan-interface200

 isis ipv6 enable 1

 ipv6 address 3001:2::1/64

#

·     Switch C:

#

isis 1

 network-entity 10.2001.0010.0001.00

 #

 address-family ipv6 unicast

  import-route isisv6 level-1 into level-2 filter-policy prefix-list 1

#

vlan 11 to 13

#

interface Vlan-interface11

 isis ipv6 enable 1

 ipv6 address 2001:1::2/64

#

interface Vlan-interface12

 isis ipv6 enable 1

 ipv6 address 2001:2::2/64

#

interface Vlan-interface13

 isis ipv6 enable 1

 ipv6 address 2001:10::1/64

#

 ipv6 prefix-list 1 index 10 permit 3001:1:: 64

#

·     Switch D:

#

isis 1

 is-level level-2

 network-entity 20.2001.0020.0001.00

 #

 address-family ipv6 unicast

  import-route direct

  import-route ospfv3 1

#

ospfv3 1

 router-id 4.4.4.4

 area 0.0.0.0

 import-route direct

 import-route isisv6 1

#

vlan 10

#

vlan 20

#

interface Vlan-interface10

 isis ipv6 enable 1

 ipv6 address 2001:10::2/64

#

interface Vlan-interface20

 ospfv3 1 area 0.0.0.0

 ipv6 address 2001:20::1/64

#

·     Switch E:

#

ospfv3 1

 router-id 5.5.5.5

 area 0.0.0.0

#

vlan 20

#

vlan 300

#

interface Vlan-interface20

 ospfv3 1 area 0

 ipv6 address 2001:20::2/64

#

interface Vlan-interface300

 ospfv3 1 area 0

 ipv6 address 3001:200::1/64

#

Related documentation

·     H3C S7500X Switch Series Layer 3—IP Routing Command Reference-R7536P05

·     H3C S7500X Switch Series Layer 3—IP Routing Configuration Guide-R7536P05