HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 115
Configuring OSPF FRR, Network requirements, Configuration procedure
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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 Age: 04h20m37s Preference: 10 State: Active Adv OrigVrf: default-vrf OrigAs: 0 LastAs: 0 Neighbor: 0.0.0.0 OrigNextHop: 10.1.1.100 RealNextHop: 10.1.1.100 BkNextHop: N/A Interface: Vlan-interface11 BkInterface: N/A The output shows that Switch A communicates with Switch B through VLAN-interface 11. Configuring OSPF FRR Network requirements As shown in Figure 29, Switch S, Switch A, and Switch D reside in the same OSPF domain. Configure 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. 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. 104
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