H3C S3610-28P Operation Manual page 402

Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches
Dead timer: Interval within which if the interface receives no hello packet from the
neighbor, it declares the neighbor is down.
LSA retransmission timer: Interval within which if the interface receives no
acknowledgement packets after sending a LSA to the neighbor, it will retransmit
the LSA.
Follow these steps to configure timers for OSPF packets:
Enter system view
Enter interface view
Specify the hello interval
Specify the poll interval
Specify the dead interval
Specify the
retransmission interval
Note:
The hello and dead intervals restore to default values after you change the network
type for an interface.
The dead interval should be at least four times the hello interval on an interface.
The poll interval is at least four times the hello interval.
The retransmission interval should not be so small for avoidance of unnecessary
LSA retransmissions. In general, this value is bigger than the round-trip time of a
packet between two adjacencies.
To do... Use the command...
system-view
interface interface-type
interface-number
ospf timer hello seconds
ospf timer poll seconds
ospf timer dead seconds
ospf timer retransmit
interval
3-34
Chapter 3 OSPF Configuration
Remarks
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Optional
The hello interval on P2P,
Broadcast interfaces
defaults to 10 seconds and
defaults to 30 seconds on
P2MP and NBMA
interfaces.
Optional
The poll interval defaults to
120 seconds.
Optional
The default dead interval is
40 seconds on P2P,
Broadcast interfaces and
120 seconds on P2MP and
NBMA interfaces.
Optional
The retransmission interval
defaults to 5 seconds.