H3C Technologies H3C SR8800 User Manual
Page 145
129
You can enable OSPF FRR to either automatically calculate a backup next hop, or to designate a
backup next hop by using a routing policy.
{
Method I
Enable OSPF FRR to automatically calculate a backup next hop.
# Configure Router S.
<RouterS> system-view
[RouterS] bfd echo-source-ip 1.1.1.1
[RouterS] ospf 1
[RouterS-ospf-1] fast-reroute auto
[RouterS-ospf-1] quit
# Configure Router D.
<RouterD> system-view
[RouterD] bfd echo-source-ip 4.4.4.4
[RouterD] ospf 1
[RouterD-ospf-1] fast-reroute auto
[RouterD-ospf-1] quit
{
Method II
Enable OSPF FRR to designate a backup next hop by using a routing policy.
# Configure Router S.
<RouterS> system-view
[RouterS] bfd echo-source-ip 1.1.1.1
[RouterS] ip ip-prefix abc index 10 permit 4.4.4.4 32
[RouterS] route-policy frr permit node 10
[RouterS-route-policy] if-match ip-prefix abc
[RouterS-route-policy] apply fast-reroute backup-interface GigabitEthernet 3/1/1
backup-nexthop 12.12.12.2
[RouterS-route-policy] quit
[RouterS] ospf 1
[RouterS-ospf-1] fast-reroute route-policy frr
[RouterS-ospf-1] quit
# Configure Router D.
<RouterD> system-view
[RouterD] bfd echo-source-ip 4.4.4.4
[RouterD] ip ip-prefix abc index 10 permit 1.1.1.1 32
[RouterD] route-policy frr permit node 10
[RouterD-route-policy] if-match ip-prefix abc
[RouterD-route-policy] apply fast-reroute backup-interface GigabitEthernet 3/1/1
backup-nexthop 24.24.24.2
[RouterD-route-policy] quit
[RouterD] ospf 1
[RouterD-ospf-1] fast-reroute route-policy frr
[RouterD-ospf-1] quit
3.
Verify the configuration:
# Display route 4.4.4.4/32 on Router S and you can view the backup next hop information.
[RouterS] display ip routing-table 4.4.4.4 verbose
Routing Table : Public