H3C Technologies H3C S7500E Series Switches - Manual (Page 115)

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neighboring routers and the routing table size is big, the router will need to receive and process large
numbers of packets. Configuring OSPF to give priority to receiving and processing Hello packets helps
ensure stable neighbor relationships.
Follow these steps to configure OSPF to give priority to receiving and processing Hello packets:
To do… Use the command… Remarks
Enter system view system-view —
Configure OSPF to give
priority to receiving and
processing Hello packets
ospf packet-process prioritized-treatment
Required
Not configured by default.
Configuring the LSU Transmit Rate
Sending large numbers of LSU packets for LSDB synchronization with neighbors may affect router
performance and consume large network bandwidths. Therefore, you can configure the router to send
LSU packets at a proper interval and limit the maximum number of LSU packets sent out an OSPF
interface each time.
Follow these steps to configure the LSU transmit rate:
To do… Use the command… Remarks
Enter system view system-view —
Enter OSPF view
ospf [ process-id | router-id router-id |
vpn-instance instance-name ] *
—
Configure the LSU
transmit rate
transmit-pacing interval interval count count
Optional
By default, an OSPF interface
sends up to three LSU
packets every 20 milliseconds.
Configuring OSPF Graceful Restart
One device can act as both a GR Restarter and GR Helper at the same time.
OSPF GR can be implemented through:
z IETF standard GR: Uses Opaque LSAs to implement GR.
z Non IETF standard GR: Uses link local signaling (LLS) to advertise GR capability and uses out of
band synchronization to synchronize the LSDB.