PLANET XGS3-24042 - Manual (Page 294)

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sending route updating messages to all neighboring Layer 3 switches every 30 seconds. A Layer 3
switch is considered inaccessible if no route updating messages from the switch is received within 180
seconds, then the route to the switch will remains in the route table for 120 seconds before it is deleted.
Therefore, if to delete a RIP route, this route item is assured to be deleted from route table after 300
seconds.
 When exchanging routing messages with CE using RIP protocol on the PE router, we should first
create corresponding VPN routing/transmitting examples to associate with corresponding interfaces.
Then enter the RIP address family mode configuring corresponding parameters. If the RIP routing
problem remains unresolved, please use debug rip command to record the debug message in three
minutes, and send them to our technical service center.