Configuring Ospf Frr - HP 6125XLG Configuration Manual

SubProtID: 0x1
Cost: 4
Tag: 0
OrigTblID: 0x0
TableID: 0x2
NBRID: 0x26000002
AttrID: 0xffffffff
Flags: 0x1008c
Label: NULL
BkLabel: NULL
Tunnel ID: Invalid
BkTunnel ID: Invalid
The output shows that Switch A communicates with Switch B through VLAN-interface 1 1.

Configuring OSPF FRR

Network requirements
As shown in
OSPF FRR so that when the link between Switch S and Switch D fails, traffic is immediately switched to
Link B.
Figure 29 Network diagram
Configuration procedure
1. Configure IP addresses and subnet masks for interfaces on the switches. (Details not shown.)
2. Configure OSPF on the switches to make sure Switch S, Switch A, and Switch D can communicate
with each other at the network layer. (Details not shown.)
3. Configure OSPF FRR to automatically calculate the backup next hop:
You can enable OSPF FRR to either calculate a backup next hop by using the LFA algorithm, or
specify a backup next hop by using a routing policy.
(Method 1.) Enable OSPF FRR to calculate the backup next hop by using the LFA algorithm:
# Configure Switch S.
<SwitchS> system-view
[SwitchS] bfd echo-source-ip 1.1.1.1
[SwitchS] ospf 1
[SwitchS-ospf-1] fast-reroute lfa
[SwitchS-ospf-1] quit
# Configure Switch D.
Preference: 10
OrigNextHop: 10.1.1.100
RealNextHop: 10.1.1.100
BkInterface: N/A
Figure 29, Switch S, Switch A, and Switch D reside in the same OSPF domain. Configure
Age: 04h20m37s
State: Active Adv
OrigVrf: default-vrf
OrigAs: 0
LastAs: 0
Neighbor: 0.0.0.0
BkNextHop: N/A
Interface: Vlan-interface11
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