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If an interface receives no hello packet from a neighbor within the dead interval, the interface
considers the neighbor down. The dead interval on an interface is at least four times the hello interval.
Any two routers attached to the same segment must have the same dead interval.
Related commands:
ospf timer hello
.
This configuration is not supported on the null interface.
Examples
# Configure the dead interval on the current interface as 60 seconds.
<Sysname> system-view
[Sysname] interface vlan-interface 10
[Sysname-Vlan-interface10] ospf timer dead 60
ospf timer hello
Syntax
ospf timer hello seconds
undo ospf timer hello
View
Interface view
Default Level
2: System level
Parameters
seconds
: Hello interval in seconds, in the range 1 to 65535.
Description
Use the
ospf timer hello
command to set the hello interval on an interface.
Use the
undo ospf timer hello
command to restore the default hello interval on an interface.
The hello interval defaults to 10s for P2P and Broadcast interfaces, and defaults to 30s for P2MP and
NBMA interfaces.
The shorter the hello interval is, the faster the topology converges and the more resources are
consumed. Make sure the hello interval on two neighboring interfaces is the same.
Related commands:
ospf timer dead
.
This configuration is not supported on the null interface.
