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Setting the Interval for Sending Hello Packets
Context
Hello packets are commonly used packets, which are periodically sent on OSPF interfaces to establish and maintain neighbor relationships. The intervals set on the interfaces connecting two OSPF neighbors need to be the same. Otherwise, the OSPF neighbor relationship cannot be established.
Procedure
- Run system-view
The system view is displayed.
- Run interface interface-type interface-number
The OSPF interface view is displayed.
- Run ospf timer hello interval
The interval for sending Hello packets is set on the OSPF interface.
By default, the interval for sending Hello packets on a P2P or broadcast interface is 10s; the interval for sending Hello packets on a P2MP or NBMA interface is 30s; the dead time for the OSPF neighbors on the same interface is four times the interval for sending Hello packets.
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