H3C Technologies H3C S5560 Series Switches - Manual (Page 330)

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• Establish two IBGP connections between Switch A and Switch C. When both paths operate
correctly, Switch C uses the path Switch A<—>Switch B<—>Switch C to exchange packets with
network 1200::0/64.
• Configure BFD over the path. When the path fails, BFD can quickly detect the failure and notify it
to IPv6 BGP. Then, the path Switch A<—>Switch D<—>Switch C takes effect immediately.
Figure 77 Network diagram
Table 18 Interface and IP address assignment
Device Interface IP address Device Interface IP address
Switch A Vlan-int100 3000::1/64 Switch C Vlan-int101 3001::3/64
Vlan-int200 2000::1/64 Vlan-int201 2001::3/64
Switch B Vlan-int100 3000::2/64 Switch D Vlan-int200 2000::2/64
Vlan-int101 3001::2/64 Vlan-int201 2001::2/64
Configuration procedure
1. Configure IPv6 addresses for interfaces. (Details not shown.)
2. Configure OSPFv3 so that Switch A and Switch C can reach each other. (Details not shown.)
3. Configure IPv6 BGP on Switch A:
# Establish two IBGP connections to Switch C.
<SwitchA> system-view
[SwitchA] bgp 200
[SwitchA-bgp] router-id 1.1.1.1
[SwitchA-bgp] peer 3001::3 as-number 200
[SwitchA-bgp] peer 2001::3 as-number 200
[SwitchA-bgp] address-family ipv6
[SwitchA-bgp-ipv6] peer 3001::3 enable
[SwitchA-bgp-ipv6] peer 2001::3 enable
[SwitchA-bgp-ipv6] quit
# Create IPv6 ACL 2000 to permit 1200::0/64 to pass.
Switch A Switch C
AS 200
Switch D
Vlan-int200
Vlan-int201
Switch B
AS 300
Vlan-int101 Vlan-int100
Vlan-int100 Vlan-int101
Vlan-int200 Vlan-int201
AS 100 1200::0/64