HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 86

Step 2. Enter OSPF view. 3. Configure the LSU transmit rate. Command ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * transmit-pacing interval interval count count Remarks N/A By default, an OSPF interface sends up to three LSU packets every 20 milliseconds. Enabling OSPF ISPF When the topology changes, Incremental Shortest Path First (ISPF) computes only the affected part of the SPT, instead of the entire SPT. To enable OSPF ISPF: Step 1. Enter system view. 2. Enter OSPF view. 3. Enable OSPF ISPF. Command system-view ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * ispf enable Remarks N/A N/A By default, OSPF ISPF is enabled. Configuring OSPF GR GR ensures forwarding continuity when a routing protocol restarts or an active/standby switchover occurs. Two routers are required to complete a GR process. The following are router roles in a GR process. • GR Restarter-Graceful restarting router. It must have GR capability. • GR Helper-A neighbor of the GR Restarter. It helps the GR Restarter to complete the GR process. OSPF GR has the following types: • IETF GR-Uses Opaque LSAs to implement GR. • Non-IETF GR-Uses link local signaling (LLS) to advertise GR capability and uses out of band synchronization to synchronize the LSDB. A device can act as a GR Restarter and GR Helper at the same time. Configuring the OSPF GR Restarter You can configure the IETF or non IETF OSPF GR Restarter. Configuring the IETF OSPF GR Restarter Step 1. Enter system view. Command system-view Remarks N/A 75