
Configuring IP Services
5-20 114065 Rev. A
Setting the Hello Interval
The hello interval specifies how often the router sends hello messages on the
interface. By default, OSPF transmits a hello message every 10 seconds.
Each type of network has an optimum hello interval. If the interface is connected
to a broadcast network, we suggest you use the default setting -- 10 seconds. We
suggest the following settings for network types supported by OSPF:
You can use Site Manager to specify a hello interval.
Network Type Suggested Hello Interval
Broadcast 10 seconds (default)
Point-to-point 15 seconds
NBMA 20 seconds
Point-to-multipoint 15 seconds
Note: This value must be the same for all routers attached to the same
network.
Site Manager: Hello Interval parameter: page A-81
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