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3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 3 OSPF Configuration Commands
3-44
Use the undo ospf timer dead command to restore the default value of the dead
interval of the peer.
By default, the dead interval is 40 seconds for the OSPF peers of p2p and broadcast
interfaces and is 120 seconds for those of p2mp and nbma interfaces.
The dead interval of OSPF peers means that, within this interval, if no Hello message
is received from the peer, the peer will be considered to be invalid. The value of dead
seconds should be at least four times of that of the Hello seconds. The dead seconds
for the routers on the same network segment must be identical.
Related command: ospf timer hello.
Example
# Set the peer dead interval on the interface Vlan-interface 10 to 80 seconds.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 10
[3Com-Vlan-interface10] ospf timer dead 80
3.1.38 ospf timer hello
Syntax
ospf timer hello seconds
undo ospf timer hello
View
Interface view
Parameter
seconds: Interval, in seconds, at which an interface transmits hello packet. It ranges
from 1 to 255.
Description
Use the ospf timer hello command to configure the interval for transmitting Hello
messages on an interface.
Use the undo ospf timer hello command to restore the interval to the default value.
By default, the interval is 10 seconds for an interface of p2p or broadcast type to
transmit Hello messages, and 30 seconds for an interface of p2mp or nbma type.
Related command: ospf timer dead.