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Example for Configuring Basic IPv6 IS-IS Functions
Networking Requirements
As shown in Figure 8-2, there are four routers on the IPv6 topology network. The four routers need to communicate with each other. In addition, RouterA and Router B can only process less data.
Configuration Roadmap
The configuration roadmap is as follows:
Configure IPv6 addresses on interfaces of each router so that the routers can be interconnected.
Enable IS-IS on each router so that the routers can be interconnected. Configure RouterA and RouterB as Level-1 routers to enable them to maintain less data.
Procedure
- Enable the IPv6 forwarding capability, and configure an
IPv6 address for each interface. The following uses the display on RouterA as an example. The configurations
of the other three routers are the same as that of RouterA, and are not mentioned here.
<Huawei> system-view [Huawei] sysname RouterA [RouterA] ipv6 [RouterA] interface gigabitethernet 1/0/0 [RouterA-GigabitEthernet1/0/0] ipv6 enable [RouterA-GigabitEthernet1/0/0] ipv6 address 10:1::2/64
- Configure IS-IS.
# Configure RouterA.
[RouterA] isis 1[RouterA-isis-1] is-level level-1[RouterA-isis-1] network-entity 10.0000.0000.0001.00[RouterA-isis-1] ipv6 enable[RouterA-isis-1] quit[RouterA] interface gigabitethernet 1/0/0
[RouterA-GigabitEthernet1/0/0] isis ipv6 enable 1
[RouterA-GigabitEthernet1/0/0] quit
# Configure RouterB.
[RouterB] isis 1[RouterB-isis-1] is-level level-1[RouterB-isis-1] network-entity 10.0000.0000.0002.00[RouterB-isis-1] ipv6 enable[RouterB-isis-1] quit[RouterB] interface gigabitethernet 1/0/0
[RouterB-GigabitEthernet1/0/0] isis ipv6 enable 1
[RouterB-GigabitEthernet1/0/0] quit
# Configure RouterC.
[RouterC] isis 1[RouterC-isis-1] network-entity 10.0000.0000.0003.00[RouterC-isis-1] ipv6 enable[RouterC-isis-1] quit[RouterC] interface gigabitethernet 1/0/0
[RouterC-GigabitEthernet1/0/0] isis ipv6 enable 1
[RouterC-GigabitEthernet1/0/0] quit
[RouterC] interface gigabitethernet 2/0/0
[RouterC-GigabitEthernet2/0/0] isis ipv6 enable 1
[RouterC-GigabitEthernet2/0/0] quit
[RouterC] interface gigabitethernet 3/0/0
[RouterC-GigabitEthernet3/0/0] isis ipv6 enable 1
[RouterC-GigabitEthernet3/0/0] isis circuit-level level-2
[RouterC-GigabitEthernet3/0/0] quit
# Configure RouterD.
[RouterD] isis 1[RouterD-isis-1] is-level level-2[RouterD-isis-1] network-entity 20.0000.0000.0004.00[RouterD-isis-1] ipv6 enable[RouterD-isis-1] quit[RouterD] interface GigabitEthernet 1/0/0
[RouterD-GigabitEthernet1/0/0] isis ipv6 enable 1
[RouterD-GigabitEthernet1/0/0] quit
[RouterD] interface GigabitEthernet 2/0/0
[RouterD-GigabitEthernet2/0/0] isis ipv6 enable 1
[RouterD-GigabitEthernet2/0/0] quit
- Verify the configuration.
# View the IS-IS routing table of RouterA.
[RouterA] display isis routeRoute information for ISIS(1)
-----------------------------
ISIS(1) Level-1 Forwarding Table
--------------------------------
IPV6 Dest. ExitInterface NextHop Cost Flags
----------------------------------------------------------------------------
10:1::/64 GigabitEthernet1/0/0 Direct 10 D/L/-10:2::/64 GigabitEthernet1/0/0 FE80::A83E:0:3ED2:1 20 A/-/-Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
U-Up/Down Bit Set
# View the IS-IS neighbor information on RouterC.
[RouterC] display isis peer verbosePeer information for ISIS(1)
System Id Interface Circuit Id State HoldTime Type PRI
-------------------------------------------------------------------------------
0000.0000.0001 GE1/0/0 0000000001 Up 24s L1 --
MT IDs supported : 0(UP)
Local MT IDs : 0
Area Address(es) : 10
Peer IPv6 Address(es): FE80::996B:0:9419:1
Uptime : 00:44:43
Adj Protocol : IPV6
Restart Capable : YES
Suppressed Adj : NO
Peer System Id : 0000.0000.0001
0000.0000.0002 GE2/0/0 0000000001 Up 28s L1 --
MT IDs supported : 0(UP)
Local MT IDs : 0
Area Address(es) : 10
Peer IPv6 Address(es): FE80::DC40:0:47A9:1
Uptime : 00:46:13
Adj Protocol : IPV6
Restart Capable : YES
Suppressed Adj : NO
Peer System Id : 0000.0000.0002
0000.0000.0004 GE3/0/0 0000000001 Up 24s L2 --
MT IDs supported : 0(UP)
Local MT IDs : 0
Area Address(es) : 20
Peer IPv6 Address(es): FE80::F81D:0:1E24:2
Uptime : 00:53:18
Adj Protocol : IPV6
Restart Capable : YES
Suppressed Adj : NO
Peer System Id : 0000.0000.0004
Total Peer(s): 3
# View the IS-IS LSDB information on RouterC.
[RouterC] display isis lsdb verboseDatabase information for ISIS(1)
--------------------------------
Level-1 Link State Database
LSPID Seq Num Checksum Holdtime Length ATT/P/OL
-------------------------------------------------------------------------------
0000.0000.0001.00-00 0x0000000c 0x4e06 1117 113 3/0/0
SOURCE 0000.0000.0001.00
NLPID IPV6
AREA ADDR 10
INTF ADDR V6 10:1::2
Topology Standard
NBR ID 0000.0000.0003.00 COST: 10
IPV6 10:1::/64 COST: 10
0000.0000.0002.00-00 0x00000009 0x738c 1022 83 3/0/0
SOURCE 0000.0000.0002.00
NLPID IPV6
AREA ADDR 10
INTF ADDR V6 10:2::2
Topology Standard
NBR ID 0000.0000.0003.00 COST: 10
IPV6 10:2::/64 COST: 10
0000.0000.0003.00-00* 0x00000020 0x6b10 771 140 1/0/0
SOURCE 0000.0000.0003.00
NLPID IPV6
AREA ADDR 10
INTF ADDR V6 30::1
INTF ADDR V6 10:2::1
INTF ADDR V6 10:1::1
Topology Standard
NBR ID 0000.0000.0002.00 COST: 10
NBR ID 0000.0000.0001.00 COST: 10
IPV6 10:2::/64 COST: 10
IPV6 10:1::/64 COST: 10
Total LSP(s): 3
*(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* 0x00000017 0x61b4 771 157 3/0/0
SOURCE 0000.0000.0003.00
NLPID IPV6
AREA ADDR 10
INTF ADDR V6 30::1
INTF ADDR V6 10:2::1
INTF ADDR V6 10:1::1
Topology Standard
NBR ID 0000.0000.0004.00 COST: 10
IPV6 30::/64 COST: 10
IPV6 10:2::/64 COST: 10
IPV6 10:1::/64 COST: 10
0000.0000.0004.00-00 0x0000000b 0x6dfa 1024 124 3/0/0
SOURCE 0000.0000.0004.00
NLPID IPV6
AREA ADDR 20
INTF ADDR V6 30::2
INTF ADDR V6 20::1
Topology Standard
NBR ID 0000.0000.0003.00 COST: 10
NBR ID 0000.0000.0005.00 COST: 10
IPV6 30::/64 COST: 10
IPV6 20::/64 COST: 10
Total LSP(s): 2
*(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended),
ATT-Attached, P-Partition, OL-Overload
Configuration Files
Configuration file of RouterA
#
sysname RouterA#
ipv6
#
isis 1
is-level level-1
network-entity 10.0000.0000.0001.00
#
ipv6 enable topology standard
#
interface GigabitEthernet1/0/0ipv6 enable
ipv6 address 10:1::2/64
isis ipv6 enable 1
#
return
Configuration file of RouterB
#
sysname RouterB#
ipv6
#
isis 1
is-level level-1
network-entity 10.0000.0000.0002.00
#
ipv6 enable topology standard
#
interface GigabitEthernet1/0/0ipv6 enable
ipv6 address 10:2::2/64
isis ipv6 enable 1
#
return
Configuration file of RouterC
#
sysname RouterC#
ipv6
#
isis 1
network-entity 10.0000.0000.0003.00
#
ipv6 enable topology standard
#
interface GigabitEthernet1/0/0ipv6 enable
ipv6 address 10:1::1/64
isis ipv6 enable 1
#
interface GigabitEthernet2/0/0ipv6 enable
ipv6 address 10:2::1/64
isis ipv6 enable 1
#
interface GigabitEthernet3/0/0ipv6 enable
ipv6 address 30::1/64
isis ipv6 enable 1
isis circuit-level level-2
#
return
Configuration file of RouterD
#
sysname RouterD#
ipv6
#
isis 1
is-level level-2
network-entity 20.0000.0000.0004.00
#
ipv6 enable topology standard
#
interface GigabitEthernet2/0/0ipv6 enable
ipv6 address 20::1/64
isis ipv6 enable 1
#
interface GigabitEthernet1/0/0ipv6 enable
ipv6 address 30::2/64
isis ipv6 enable 1
#
return
