H3C Technologies H3C S10500 Series Switches User Manual
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3.
Configure IPv6 BGP on Switch A.
# Establish two iBGP connections between Switch A and Switch C.
[SwitchA] bgp 200
[SwitchA-bgp] ipv6-family
[SwitchA-bgp-af-ipv6] peer 3001::3 as-number 200
[SwitchA-bgp-af-ipv6] peer 2001::3 as-number 200
[SwitchA-bgp-af-ipv6] quit
# When the two links between Switch A and Switch C are both up, Switch C adopts the link Switch
A<—>Switch B<—>Switch C to exchange packets with network 1200::0/64. (Set a higher MED value
for route 1200::0/64 sent to peer 2001::3 on Switch A.)
•
Create IPv6 ACL 2000 to permit 1200::0/64 to pass.
[SwitchA] acl ipv6 number 2000
[SwitchA-acl6-basic-2000] rule permit source 1200::0 64
[SwitchA-acl6-basic-2000] quit
•
Create two route policies, apply_med_50 and apply_med_100. Policy apply_med_50 sets the
MED for route 1200::0/64 to 50. Policy apply_med_100 sets that to 100.
[SwitchA] route-policy apply_med_50 permit node 10
[SwitchA-route-policy] if-match ipv6 address acl 2000
[SwitchA-route-policy] apply cost 50
[SwitchA-route-policy] quit
[SwitchA] route-policy apply_med_100 permit node 10
[SwitchA-route-policy] if-match ipv6 address acl 2000
[SwitchA-route-policy] apply cost 100
[SwitchA-route-policy] quit
•
Apply routing policy apply_med_50 to routes outgoing to peer 3001::3, and apply routing policy
apply_med_100 to routes outgoing to peer 2001::3.
[SwitchA] bgp 200
[SwitchA-bgp] ipv6-family
[SwitchA-bgp-af-ipv6] network 1200:: 64
[SwitchA-bgp-af-ipv6] peer 3001::3 route-policy apply_med_50 export
[SwitchA-bgp-af-ipv6] peer 2001::3 route-policy apply_med_100 export
# Configure BFD over the link to peer 3001::3 so that when the link Switch A<—>Switch B<—>Switch C
fails, BFD can quickly detect the failure and notify it to IPv6 BGP, and then the link Switch A<—>Switch
D<—>Switch C takes effect immediately.
[SwitchA-bgp-af-ipv6] peer 3001::3 bfd
[SwitchA-bgp-af-ipv6] quit
[SwitchA-bgp] quit
4.
Configure IPv6 BGP on Switch C.
[SwitchC] bgp 200
[SwitchC-bgp] ipv6-family
[SwitchC-bgp-af-ipv6] peer 3000::1 as-number 200
[SwitchC-bgp-af-ipv6] peer 3000::1 bfd
[SwitchC-bgp-af-ipv6] peer 2000::1 as-number 200
[SwitchC-bgp-af-ipv6] quit
[SwitchC-bgp] quit