Configuring Bfd For Ipv6 Bgp - HPE FlexNetwork HSR6800 Configuration Manual

Configuring BFD for IPv6 BGP

Network requirements
•
As shown in
•
Establish two IBGP connections between Router A and Router C. When both links are working,
Router C adopts the link Router A<—>Router B<—>Router C to exchange packets with
network 1200::0/64. Configure BFD over the link. Then if the link fails, BFD can quickly detect
the failure and notify it to IPv6 BGP. Then the link Router A<—>Router D<—>Router C takes
effect immediately.
Figure 112 Network diagram
1200::0/64
AS 100
Configuration procedure
Configure IP addresses for interfaces. (Details not shown.)
1.
Configure OSPFv3 to make sure that Router A and Router C are reachable to each other.
2.
(Details not shown.)
Configure IPv6 BGP on Router A:
3.
# Establish two IBGP connections between Router A and Router C.
<RouterA> system-view
[RouterA] bgp 200
[RouterA-bgp] ipv6-family
[RouterA-bgp-af-ipv6] network 1200:: 64
[RouterA-bgp-af-ipv6] peer 3002::2 as-number 200
[RouterA-bgp-af-ipv6] peer 2002::2 as-number 200
[RouterA-bgp-af-ipv6] quit
# When the two links between Router A and Router C are both up, Router C adopts the link
Router A<—>Router B<—>Router C to exchange packets with network 1200::0/64. (Set a
higher MED value for route 1200::0/64 sent to peer 2002::2 on Router A.)
Create IPv6 ACL 2000 to permit 1200::0/64 to pass.
[RouterA] acl ipv6 number 2000
[RouterA-acl6-basic-2000] rule permit source 1200::0 64
[RouterA-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.
[RouterA] route-policy apply_med_50 permit node 10
[RouterA-route-policy] if-match ipv6 address acl 2000
Figure 112, configure OSPFv3 as the IGP in AS 200.
GE2/1/2
3001::2/64
GE2/1/2
3001::1/64
Router A
GE2/1/1
2001::1/64
GE2/1/1
2001::2/64
Router B
GE2/1/1
3002::1/64
GE2/1/1
3002::2/64
AS 200
GE2/1/2
2002::2/64
GE2/1/2
2002::1/64
Router D
388
AS 300
Router C