Configuring The Lsa Transmission Delay - H3C S7500 Series Operation Manual

Operation Manual – Routing Protocol
H3C S7500 Series Ethernet Switches
The dead time on an interface must be at least four times of the Hello interval on the
same interface.
After a router sends an LSA to a neighbor, it waits for an acknowledgement packet
from the neighbor. If the router receives no acknowledgement packet from the
neighbor within the retransmission interval, it retransmits the LSA to the neighbor.
Follow these steps to configure OSPF timers:
To do...
Enter system view
Enter interface view
Set the hello interval
on the interface
Set the poll interval
on the NBMA
interface
Set the dead time of
the neighboring
router on the interface
Set the interval at
which the router
retransmits an LSA to
the neighboring
router on the interface
Note:
Do not set an LSA retransmission interval that is too short. Otherwise, unnecessary
retransmission will occur. LSA retransmission interval must be greater than the round
trip time of a packet between two routers.

4.7.3 Configuring the LSA transmission delay

Follow these steps to configure the LSA transmission delay:
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
4-20
Chapter 4 OSPF Configuration
Remarks
—
—
Optional
By default, p2p and broadcast
interfaces send Hello packets
every 10 seconds; while p2mp
and NBMA interfaces send Hello
packets every 30 seconds.
Optional
By default, poll packets are sent
every 120 seconds.
Optional
By default, the dead time for the
OSPF neighboring router on a
p2p or broadcast interface is 40
seconds and that for the OSPF
neighboring router on a p2mp or
NBMA interface is 120 seconds.
Optional
5 seconds by default.