Ospf Timer Dead - 3Com 5500-EI PWR Reference Manual

For a P2MP interface,
If the unicast keyword is not specified, the interface sends packets to multicast addresses.
If the unicast keyword is specified, the interface sends packets to unicast addresses. In this case,
you must use the peer command to specify the neighbor.
Note that you must use the peer command to configure the peer if the network type of the interface is
NBMA or manually changed to NBMA with the ospf network-type command.
Related commands: ospf dr-priority.
Examples
# Set the network type of the interface VLAN-interface 10 to NBMA.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 10
[Sysname-Vlan-interface10] ospf network-type nbma

ospf timer dead

Syntax
ospf timer dead seconds
undo ospf timer dead
View
Interface view
Parameters
seconds: Dead interval of the OSPF neighbor. It is in seconds and ranges from 1 to 65535.
Description
Use the ospf timer dead command to configure the dead interval of the OSPF neighbor.
Use the undo ospf timer dead command to restore the default.
By default, the dead interval is
40 seconds for the OSPF peers of p2p and broadcast interfaces
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 interfaces on the same network segment
must be identical.
Related commands: ospf timer hello.
Examples
# Set the peer dead interval on the interface VLAN-interface 10 to 80 seconds.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Vlan-interface 10
[Sysname-Vlan-interface10] ospf timer dead 80
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