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Example for Configuring Basic IPv6 IS-IS Functions

Networking Requirements

In Figure 1, the four switches on the IPv6 network need to communicate with each other. SwitchA and SwitchB can only process a small amount of data.

Figure 1 Configuring basic IPv6 IS-IS functions

Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure IPv6 addresses on interfaces of each switch so that the switches can be interconnected.

  2. Enable IS-IS on each switch so that the switches can be interconnected. Configure SwitchA and SwitchB as Level-1 switches to enable them to maintain less data.

Procedure

  1. Configure VLANs that interfaces belong to.

    # Configure SwitchA. Ensure that the configurations of SwitchB, SwitchC, and SwitchD are the same as the configuration of SwitchA.

    <HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan batch 10
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type trunk
[SwitchA-GigabitEthernet0/0/1] port trunk allow-pass vlan 10
[SwitchA-GigabitEthernet0/0/1] quit

  2. Enable the capability of IPv6 forwarding and configure IPv6 address for each interface.

    # Configure SwitchA. Ensure that the configurations of SwitchB, SwitchC, and SwitchD are the same as the configuration of SwitchA.

    [SwitchA] ipv6
[SwitchA] interface vlanif 10
[SwitchA-Vlanif10] ipv6 enable
[SwitchA-Vlanif10] ipv6 address fc00:0:0:10::2/64
[SwitchA-Vlanif10] quit

  3. Configure IS-IS.

    # Configure SwitchA.

    [SwitchA] isis 1
[SwitchA-isis-1] is-level level-1
[SwitchA-isis-1] network-entity 10.0000.0000.0001.00
[SwitchA-isis-1] ipv6 enable
[SwitchA-isis-1] quit
[SwitchA] interface vlanif 10
[SwitchA-Vlanif10] isis ipv6 enable 1
[SwitchA-Vlanif10] quit

    # Configure SwitchB.

    [SwitchB] isis 1 
[SwitchB-isis-1] is-level level-1
[SwitchB-isis-1] network-entity 10.0000.0000.0002.00
[SwitchB-isis-1] ipv6 enable
[SwitchB-isis-1] quit
[SwitchB] interface vlanif 20
[SwitchB-Vlanif20] isis ipv6 enable 1
[SwitchB-Vlanif20] quit

    # Configure SwitchC.

    [SwitchC] isis 1
[SwitchC-isis-1] network-entity 10.0000.0000.0003.00
[SwitchC-isis-1] ipv6 enable
[SwitchC-isis-1] quit
[SwitchC] interface vlanif 10
[SwitchC-Vlanif10] isis ipv6 enable 1
[SwitchC-Vlanif10] quit
[SwitchC] interface vlanif 20
[SwitchC-Vlanif20] isis ipv6 enable 1
[SwitchC-Vlanif20] quit
[SwitchC] interface vlanif 30
[SwitchC-Vlanif30] isis ipv6 enable 1
[SwitchC-Vlanif30] isis circuit-level level-2
[SwitchC-Vlanif30] quit

    # Configure SwitchD.

    [SwitchD] isis 1 
[SwitchD-isis-1] is-level level-2
[SwitchD-isis-1] network-entity 20.0000.0000.0004.00
[SwitchD-isis-1] ipv6 enable
[SwitchD-isis-1] quit
[SwitchD] interface vlanif 30
[SwitchD-Vlanif30] isis ipv6 enable 1
[SwitchD-Vlanif30] quit
[SwitchD] interface vlanif40
[SwitchD-Vlanif40] isis ipv6 enable 1
[SwitchD-Vlanif40] quit

  4. Verify the configuration.

    # Check the IS-IS routing table of SwitchA.

    [SwitchA] display isis route

                         Route information for ISIS(1)
                         -----------------------------

                        ISIS(1) Level-1 Forwarding Table
                        --------------------------------

IPV4 Destination     IntCost    ExtCost ExitInterface   NextHop         Flags
-------------------------------------------------------------------------------
0.0.0.0/0            10         NULL   

 IPV6 Dest.      ExitInterface   NextHop                       Cost       Flags
-------------------------------------------------------------------------------
 ::/0            Vlanif10        FE80::244:1FF:FE41:5411       10         A/-/-
 FC00:0:0:10::/64                            
                 Vlanif10        Direct                        10         D/L/-
 FC00:0:0:20::/64                            
                 Vlanif10        FE80::244:1FF:FE41:5411       20         A/-/-

     Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
                               U-Up/Down Bit Set

    # Check the IS-IS neighbors of SwitchC.

    [SwitchC] display isis peer verbose

                          Peer information for ISIS(1)

  System Id     Interface          Circuit Id       State HoldTime Type     PRI
-------------------------------------------------------------------------------
0000.0000.0001  Vlanif10           0000.0000.0001.01 Up   8s       L1       64 

  MT IDs supported     : 0(UP) 
  Local MT IDs         : 0 
  Area Address(es)     : 10 
  Peer IPv6 Address(es): FE80::1234:FCFF:FEFC:199
  Uptime               : 00:02:08
  Adj Protocol         : IPV6 
  Restart Capable      : YES
  Suppressed Adj       : NO
  Peer System Id       : 0000.0000.0001  

0000.0000.0002  Vlanif20           0000.0000.0003.02 Up   24s      L1       64 

  MT IDs supported     : 0(UP) 
  Local MT IDs         : 0 
  Area Address(es)     : 10 
  Peer IPv6 Address(es): FE80::225:9EFF:FEFB:494A
  Uptime               : 00:02:09
  Adj Protocol         : IPV6 
  Restart Capable      : YES
  Suppressed Adj       : NO
  Peer System Id       : 0000.0000.0002  

0000.0000.0004  Vlanif30           0000.0000.0003.03 Up   27s      L2       64 

  MT IDs supported     : 0(UP) 
  Local MT IDs         : 0 
  Area Address(es)     : 20 
  Peer IPv6 Address(es): FE80::244:1FF:FE41:5410
  Uptime               : 00:02:16
  Adj Protocol         : IPV6 
  Restart Capable      : YES
  Suppressed Adj       : NO
  Peer System Id       : 0000.0000.0004  


Total Peer(s): 3

    # Check the IS-IS LSDB of SwitchC.

    [SwitchC] display isis lsdb verbose

                        Database information for ISIS(1)
                        --------------------------------

                          Level-1 Link State Database

LSPID                 Seq Num      Checksum      Holdtime      Length  ATT/P/OL
-------------------------------------------------------------------------------
0000.0000.0001.00-00  0x00000005   0x3cb9        1009          86      0/0/0   
 SOURCE       0000.0000.0001.00
 NLPID        IPV6
 AREA ADDR    10 
 INTF ADDR V6 FC00:0:0:10::2                 
 Topology     Standard
 NBR  ID      0000.0000.0001.01  COST: 10        
 IPV6         FC00:0:0:10::/64                 COST: 10        

0000.0000.0001.01-00  0x00000001   0xd8f1        1009          55      0/0/0   
 SOURCE       0000.0000.0001.01
 NLPID        IPV6
 NBR  ID      0000.0000.0001.00  COST: 0         
 NBR  ID      0000.0000.0003.00  COST: 0         

0000.0000.0002.00-00  0x00000005   0x864b        1007          86      0/0/0   
 SOURCE       0000.0000.0002.00
 NLPID        IPV6
 AREA ADDR    10 
 INTF ADDR V6 FC00:0:0:20::2                 
 Topology     Standard
 NBR  ID      0000.0000.0003.02  COST: 10        
 IPV6         FC00:0:0:20::/64                 COST: 10        

0000.0000.0003.00-00* 0x00000007   0xcf9b        1012          143     1/0/0   
 SOURCE       0000.0000.0003.00
 NLPID        IPV6
 AREA ADDR    10 
 INTF ADDR V6 FC00:0:0:10::1                 
 INTF ADDR V6 FC00:0:0:20::1                 
 INTF ADDR V6 FC00:0:0:30::1                 
 Topology     Standard
 NBR  ID      0000.0000.0001.01  COST: 10        
 NBR  ID      0000.0000.0003.02  COST: 10        
 IPV6         FC00:0:0:10::/64                 COST: 10        
 IPV6         FC00:0:0:20::/64                 COST: 10        

0000.0000.0003.02-00* 0x00000001   0xc9fa        1009          55      0/0/0   
 SOURCE       0000.0000.0003.02
 NLPID        IPV6
 NBR  ID      0000.0000.0003.00  COST: 0         
 NBR  ID      0000.0000.0002.00  COST: 0         

Total LSP(s): 5
    *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), 
           ATT-Attached, P-Partition, OL-Overload


                          Level-2 Link State Database

LSPID                 Seq Num      Checksum      Holdtime      Length  ATT/P/OL
-------------------------------------------------------------------------------
0000.0000.0003.00-00* 0x00000006   0x8ff6        1014          146     0/0/0   
 SOURCE       0000.0000.0003.00
 NLPID        IPV6
 AREA ADDR    10 
 INTF ADDR V6 FC00:0:0:10::1                 
 INTF ADDR V6 FC00:0:0:20::1                 
 INTF ADDR V6 FC00:0:0:30::1                 
 Topology     Standard
 NBR  ID      0000.0000.0003.03  COST: 10        
 IPV6         FC00:0:0:10::/64                 COST: 10        
 IPV6         FC00:0:0:20::/64                 COST: 10        
 IPV6         FC00:0:0:30::/64                 COST: 10        

0000.0000.0003.03-00* 0x00000001   0xfac6        1012          55      0/0/0   
 SOURCE       0000.0000.0003.03
 NLPID        IPV6
 NBR  ID      0000.0000.0003.00  COST: 0         
 NBR  ID      0000.0000.0004.00  COST: 0         

0000.0000.0004.00-00  0x00000005   0x5943        1009          86      0/0/0   
 SOURCE       0000.0000.0004.00
 NLPID        IPV6
 AREA ADDR    20 
 INTF ADDR V6 FC00:0:0:30::2                 
 Topology     Standard
 NBR  ID      0000.0000.0003.03  COST: 10        
 IPV6         FC00:0:0:30::/64                 COST: 10        

Total LSP(s): 3
    *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), 
           ATT-Attached, P-Partition, OL-Overload

Configuration Files

  • SwitchA configuration file

    #
sysname SwitchA
#
ipv6
#
vlan batch 10
#
isis 1
 is-level level-1
 network-entity 10.0000.0000.0001.00
 #
 ipv6 enable topology standard
 #
#
interface Vlanif10
 ipv6 enable
 ipv6 address FC00:0:0:10::2/64
 isis ipv6 enable 1
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 
#
return

  • SwitchB configuration file

    #
sysname SwitchB
#
ipv6
#
vlan batch 20
#
isis 1
 is-level level-1
 network-entity 10.0000.0000.0002.00
 #
 ipv6 enable topology standard
 #
#
interface Vlanif20
 ipv6 enable
 ipv6 address FC00:0:0:20::2/64
 isis ipv6 enable 1
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 20 
#
return

  • SwitchC configuration file

    #
sysname SwitchC
#
ipv6
#
vlan batch 10 20 30
#
isis 1
 network-entity 10.0000.0000.0003.00
 #
 ipv6 enable topology standard
 #
#
interface Vlanif10
 ipv6 enable
 ipv6 address FC00:0:0:10::1/64
 isis ipv6 enable 1
#
interface Vlanif20
 ipv6 enable
 ipv6 address FC00:0:0:20::1/64
 isis ipv6 enable 1
#
interface Vlanif30
 ipv6 enable
 ipv6 address FC00:0:0:30::1/64
 isis ipv6 enable 1
 isis circuit-level level-2
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 20
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 30 
#
return

  • SwitchD configuration file

    #
sysname SwitchD
#
ipv6
#
vlan batch 30 40
#
isis 1
 is-level level-2
 network-entity 20.0000.0000.0004.00
 #
 ipv6 enable topology standard
 #
#
interface Vlanif30
 ipv6 enable
 ipv6 address FC00:0:0:30::2/64
 isis ipv6 enable 1
#
interface Vlanif40
 ipv6 enable
 ipv6 address FC00:0:0:25::1/64
 isis ipv6 enable 1
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 30 
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 40
#
return
Parent Topic: Configuration Examples for IPv6 IS-IS
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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