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Example for Configuring Basic BGP4+ Functions
Networking Requirements
As shown in Figure 9-27, there are two ASs: 65008 and 65009. Router A belongs to AS 65008; Router B, and Router C belong to AS65009. Routing Protocol is required to exchange the routing information between the two ASs.
Configuration Roadmap
The configuration roadmap is as follows:
- Configure the IBGP connection between Router B and Router C.
- Configure the EBGP connection between Router A and Router B.
Procedure
- Assign an IPv6 address for each interface.
# Configure IPv6 addresses for interfaces on RouterA.
<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 8::1/64[RouterA] interface gigabitethernet 2/0/0[RouterA-GigabitEthernet1/0/0] ipv6 enable[RouterA-GigabitEthernet1/0/0] ipv6 address 10::2/64The configurations of RouterB and RouterC are similar to the configuration of RouterA, and are not mentioned here.
- Configure the IBGP.
# Configure Router B.
[RouterB] ipv6[RouterB] bgp 65009[RouterB-bgp] router-id 2.2.2.2[RouterB-bgp] peer 9:1::2 as-number 65009[RouterB-bgp] ipv6-family unicast[RouterB-bgp-af-ipv6] peer 9:1::2 enable[RouterB-bgp-af-ipv6] network 9:1:: 64# Configure Router C.
[RouterC] ipv6[RouterC] bgp 65009[RouterC-bgp] router-id 3.3.3.3[RouterC-bgp] peer 9:1::1 as-number 65009[RouterC-bgp] ipv6-family unicast[RouterC-bgp-af-ipv6] peer 9:1::1 enable[RouterC-bgp-af-ipv6] network 9:1:: 64 - Configure the EBGP.
# Configure Router A.
[RouterA] ipv6[RouterA] bgp 65008[RouterA-bgp] router-id 1.1.1.1[RouterA-bgp] peer 10::1 as-number 65009[RouterA-bgp] ipv6-family unicast[RouterA-bgp-af-ipv6] peer 10::1 enable[RouterA-bgp-af-ipv6] network 10:: 64[RouterA-bgp-af-ipv6] network 8:: 64# Configure Router B.
[RouterB] bgp 65009[RouterB-bgp] peer 10::2 as-number 65008[RouterB-bgp] ipv6-family unicast[RouterB-bgp-af-ipv6] peer 10::2 enable[RouterB-bgp-af-ipv6] network 10:: 64# Check the connection status of BGP4+ peers.
[RouterB] display bgp ipv6 peerBGP local router ID : 2.2.2.2 Local AS number : 65009 Total number of peers : 2 Peers in established state : 2 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 9:1::2 4 65009 10 14 0 00:07:10 Established 1 10::2 4 65008 6 6 0 00:02:17 Established 2
The routing table shows that Router B has set up BGP4+ connections with other routers.
# Display the routing table of Router A.
[RouterA] display bgp ipv6 routing-tableBGP Local router ID is 1.1.1.1 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete Total Number of Routes: 4 *> Network : 8:: PrefixLen : 64 NextHop : :: LocPrf : MED : 0 PrefVal : 0 Label : Path/Ogn : i *> Network : 9:1:: PrefixLen : 64 NextHop : 10::1 LocPrf : MED : 0 PrefVal : 0 Label : Path/Ogn : 65009 i *> Network : 10:: PrefixLen : 64 NextHop : :: LocPrf : MED : 0 PrefVal : 0 Label : Path/Ogn : i NextHop : 10::1 LocPrf : MED : 0 PrefVal : 0 Label : Path/Ogn : 65009 iThe routing table shows that Router A has learned the route from AS 65009. AS 65008 and AS 65009 can exchange their routing information.
Configuration Files
Configuration file of Router A
#
sysname RouterA#
ipv6
#
interface GigabitEthernet1/0/0
ipv6 enable
ipv6 address 8::1/64
#
interface GigabitEthernet2/0/0
ipv6 enable
ipv6 address 10::2/64
#
bgp 65008
router-id 1.1.1.1
peer 10::1 as-number 65009
#
ipv4-family unicast
undo synchronization
#
ipv6-family unicast
undo synchronization
network 8:: 64
network 10:: 64
peer 10::1 enable
#
return
Configuration file of Router B
#
sysname RouterB#
ipv6
#
interface GigabitEthernet1/0/0
ipv6 enable
ipv6 address 9:1::1/64
#
interface GigabitEthernet2/0/0
ipv6 enable
ipv6 address 10::1/64
#
bgp 65009
router-id 2.2.2.2
peer 9:1::2 as-number 65009
peer 10::2 as-number 65008
#
ipv4-family unicast
undo synchronization
#
ipv6-family unicast
undo synchronization
network 9:1:: 64
network 10:: 64
peer 9:1::2 enable
peer 10::2 enable
#
return
Configuration file of Router C
#
sysname RouterC#
ipv6
#
interface GigabitEthernet1/0/0
ipv6 enable
ipv6 address 9:1::2/64
#
bgp 65009
router-id 3.3.3.3
peer 9:1::1 as-number 65009
#
ipv4-family unicast
undo synchronization
#
ipv6-family unicast
undo synchronization
network 9:1:: 64
peer 9:1::1 enable
#
return
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