H3C Routers

IPv6 IS-IS Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring IPv6 IS-IS·· 1

Network configuration· 1

Analysis· 2

Software versions used· 2

Procedures· 2

Configuring Router A· 2

Configuring Router B· 3

Configuring Router C· 3

Configuring Router D·· 4

Configuring Router E· 5

Verifying the configuration· 5

Configuration files· 7

Router A· 7

Router B· 7

Router C· 7

Router D·· 8

Router E· 8

Related documentation· 9

 

Introduction

This document provides IPv6 IS-IS configuration examples.

Prerequisites

The following information applies to Comware 9-based routers. Procedures and information in the examples might be slightly different depending on the software or hardware version of the routers.

The configuration examples 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.

The following information is provided based on the assumption 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 routers to meet the following requirements:

·     The Marketing department can reach the F&A department, the branch, and the partner.

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

Figure 1 Network diagram

‌

Analysis

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

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

·     Configure Router 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.

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

Software versions used

This configuration example was created and verified on R9141P16 of the MSR2630E-X1 device.

Procedures

Configuring Router A

# Configure an IPv6 address for GigabitEthernet 1/0/1.

<RouterA> system-view

[RouterA] interface gigabitethernet 1/0/1

[RouterA-GigabitEthernet1/0/1] ipv6 address 2001:1::1 64

[RouterA-GigabitEthernet1/0/1] quit

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

# Configure IPv6 IS-IS.

[RouterA] isis 1

[RouterA-isis-1] is-level level-1

[RouterA-isis-1] network-entity 10.3001.0001.0001.00

[RouterA-isis-1] address-family ipv6 unicast

[RouterA-isis-1-ipv6] quit

[RouterA-isis-1] quit

[RouterA] interface gigabitethernet 1/0/1

[RouterA–GigabitEthernet1/0/1] isis ipv6 enable 1

[RouterA–GigabitEthernet1/0/1] quit

[RouterA] interface gigabitethernet 1/0/2

[RouterA–GigabitEthernet1/0/2] isis ipv6 enable 1

[RouterA–GigabitEthernet1/0/2] quit

Configuring Router B

# Configure an IPv6 address for GigabitEthernet 1/0/1.

<RouterB> system-view

[RouterB] interface gigabitethernet 1/0/1

[RouterB-GigabitEthernet1/0/1] ipv6 address 2001:2::1 64

[RouterB-GigabitEthernet1/0/1] quit

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

# Configure IPv6 IS-IS.

[RouterB] isis 1

[RouterB-isis-1] is-level level-1

[RouterB-isis-1] network-entity 10.3001.0002.0001.00

[RouterB-isis-1] address-family ipv6 unicast

[RouterB-isis-1-ipv6] quit

[RouterB-isis-1] quit

[RouterB] interface gigabitethernet 1/0/1

[RouterB–GigabitEthernet1/0/1] isis ipv6 enable 1

[RouterB–GigabitEthernet1/0/1] quit

[RouterB] interface gigabitethernet 1/0/2

[RouterB–GigabitEthernet1/0/2] isis ipv6 enable 1

[RouterB–GigabitEthernet1/0/2] quit

Configuring Router C

# Configure an IPv6 address for GigabitEthernet 1/0/1.

<RouterC> system-view

[RouterC] interface gigabitethernet 1/0/1

[RouterC-GigabitEthernet1/0/1] ipv6 address 2001:1::2 64

[RouterC-GigabitEthernet1/0/1] quit

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

# Configure IPv6 IS-IS.

[RouterC] isis 1

[RouterC-isis-1] network-entity 10.2001.0010.0001.00

[RouterC-isis-1] address-family ipv6 unicast

[RouterC-isis-1-ipv6] quit

[RouterC-isis-1] quit

[RouterC] interface gigabitethernet 1/0/1

[RouterC–GigabitEthernet1/0/1] isis ipv6 enable 1

[RouterC–GigabitEthernet1/0/1] quit

[RouterC] interface gigabitethernet 1/0/2

[RouterC–GigabitEthernet1/0/2] isis ipv6 enable 1

[RouterC–GigabitEthernet1/0/2] quit

[RouterC] interface gigabitethernet 1/0/3

[RouterC–GigabitEthernet1/0/3] isis ipv6 enable 1

[RouterC–GigabitEthernet1/0/3] quit

# Configure IPv6 route leaking from Level-1 to Level-2, and use prefix list 1 to advertise only network 3001:1::/64 to Level-2.

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

[RouterC] isis 1

[RouterC-isis-1] address-family ipv6

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

[RouterC-isis-1-ipv6] quit

[RouterC-isis-1] quit

Configuring Router D

# Configure an IPv6 address for GigabitEthernet 1/0/1.

<RouterD> system-view

[RouterD] interface gigabitethernet 1/0/1

[RouterD-GigabitEthernet1/0/1] ipv6 address 2001:10::2 64

[RouterD-GigabitEthernet1/0/1] quit

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

# Configure IPv6 IS-IS.

[RouterD] isis 1

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

[RouterD-isis-1] network-entity 20.2001.0020.0001.00

[RouterD-isis-1] address-family ipv6 unicast

[RouterD-isis-1-ipv6] quit

[RouterD-isis-1] quit

[RouterD] interface gigabitethernet 1/0/1

[RouterD–GigabitEthernet1/0/1] isis ipv6 enable 1

[RouterD–GigabitEthernet1/0/1] quit

[RouterD] interface gigabitethernet 1/0/2

[RouterD–GigabitEthernet1/0/2] isis ipv6 enable 1

[RouterD–GigabitEthernet1/0/2] quit

# Configure OSPFv3.

[RouterD] ospfv3 1

[RouterD-ospfv3-1] router-id 4.4.4.4

[RouterD-ospfv3-1] quit

[RouterD] interface gigabitethernet 1/0/2

[RouterD–GigabitEthernet1/0/2] ospfv3 1 area 0

[RouterD–GigabitEthernet1/0/2] quit

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

[RouterD] isis 1

[RouterD-isis-1] address-family ipv6

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

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

[RouterD-isis-1-ipv6] quit

[RouterD-isis-1] quit

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

[RouterD] ospfv3 1

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

[RouterD-ospfv3-1] import-route direct

Configuring Router E

# Configure an IPv6 address for GigabitEthernet 1/0/1.

<RouterE> system-view

[RouterE] interface gigabitethernet 1/0/1

[RouterE-GigabitEthernet1/0/1] ipv6 address 2001:20::2 64

[RouterE-GigabitEthernet1/0/1] quit

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

# Configure OSPFv3.

[RouterE] ospfv3 1

[RouterE-ospfv3-1] router-id 5.5.5.5

[RouterE-ospfv3-1] quit

[RouterE] interface gigabitethernet 1/0/1

[RouterE–GigabitEthernet1/0/1] ospfv3 1 area 0

[RouterE–GigabitEthernet1/0/1] quit

[RouterE] interface gigabitethernet 1/0/2

[RouterE–GigabitEthernet1/0/2] ospfv3 1 area 0

[RouterE–GigabitEthernet1/0/2] quit

Verifying the configuration

# View the IPv6 IS-IS routing table on Router D and verify that the branch can reach the Marketing department, but cannot reach the F&A department.

[RouterD] 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: GE1/0/1

 Destination : 2001:1::                                PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 20

 Next Hop    : FE80::7625:8AFF:FE02:4D13               Interface: GE1/0/1

 Destination : 2001:2::                                PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 20

 Next Hop    : FE80::7625:8AFF:FE02:4D13               Interface: GE1/0/1

 Destination : 3001:1::                                PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 30

 Next Hop    : FE80::7625:8AFF:FE02:4D13               Interface: GE1/0/1

      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 Router C.

[RouterC] 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: GE1/0/3

 

 Destination : 2001:1::                                PrefixLen: 64

 Flag        : D/L/-                                   Cost     : 10

 Next Hop    : Direct                                  Interface: GE1/0/1

 

 Destination : 2001:2::                                PrefixLen: 64

 Flag        : D/L/-                                   Cost     : 10

 Next Hop    : Direct                                  Interface: GE1/0/2

 

 Destination : 2001:20::                               PrefixLen: 64

 Flag        : R/L/-                                   Cost     : 20

 Next Hop    : FE80::BAAF:67FF:FE30:3304               Interface: GE1/0/3

 

 Destination : 3001:200::                              PrefixLen: 64

 Flag        : R/-/-                                   Cost     : 20

 Next Hop    : FE80::BAAF:67FF:FE30:3304               Interface: GE1/0/3

 

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

·     Ping 3001:200::1 from Router C.

[RouterC] ping ipv6 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=63 time=7.230 ms

56 bytes from 3001:200::1, icmp_seq=1 hlim=63 time=3.449 ms

56 bytes from 3001:200::1, icmp_seq=2 hlim=63 time=2.779 ms

56 bytes from 3001:200::1, icmp_seq=3 hlim=63 time=2.652 ms

56 bytes from 3001:200::1, icmp_seq=4 hlim=63 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

Router A

#

isis 1

 is-level level-1

 network-entity 10.3001.0001.0001.00

 #

 address-family ipv6 unicast

#

interface GigabitEthernet1/0/1

 isis ipv6 enable 1

 ipv6 address 2001:1::1/64

#

interface GigabitEthernet1/0/2

 isis ipv6 enable 1

 ipv6 address 3001:1::1/64

#

Router B

#

isis 1

 is-level level-1

 network-entity 10.3001.0002.0001.00

 #

 address-family ipv6 unicast

#

interface GigabitEthernet1/0/1

 isis ipv6 enable 1

 ipv6 address 2001:2::1/64

#

interface GigabitEthernet1/0/2

 isis ipv6 enable 1

 ipv6 address 3001:2::1/64

#

Router 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

#

interface GigabitEthernet1/0/1

 isis ipv6 enable 1

 ipv6 address 2001:1::2/64

#

interface GigabitEthernet1/0/2

 isis ipv6 enable 1

 ipv6 address 2001:2::2/64

#

interface GigabitEthernet1/0/3

 isis ipv6 enable 1

 ipv6 address 2001:10::1/64

#

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

#

Router 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

#

interface GigabitEthernet1/0/1

 isis ipv6 enable 1

 ipv6 address 2001:10::2/64

#

interface GigabitEthernet1/0/2

 ospfv3 1 area 0.0.0.0

 ipv6 address 2001:20::1/64

#

Router E

#

ospfv3 1

 router-id 5.5.5.5

 area 0.0.0.0

#

interface GigabitEthernet1/0/1

 ospfv3 1 area 0

 ipv6 address 2001:20::2/64

#

interface GigabitEthernet1/0/2

 ospfv3 1 area 0

 ipv6 address 3001:200::1/64

#

Related documentation

·     Layer 3—IP Routing Configuration Guide in H3C MSR1000[2600][3600] Routers Configuration Guides(V9)

·     Layer 3—IP Routing Command Reference in H3C MSR1000[2600][3600] Routers Command References(V9)