H3C S3600 Series User Manual

Operation Manual – Routing Protocol
H3C S3600 Series Ethernet Switches-Release 1510 Chapter 4
OSPF Configuration
4-21
4.7.2 Configuring OSPF Timers
The Hello intervals for OSPF neighbors must be consistent. The value of Hello
interval is in inverse proportion to route convergence speed and network load.
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.
Table 4-14 Configure OSPF timers
Operation Command Description
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
Required
Configure the hello
interval on the interface
ospf timer hello seconds
Optional
By default, p2p and
broadcast interfaces send
Hello packets every 10
seconds; while p2mp and
NBMA interfaces send Hello
packets every 30 seconds.
Configure the poll
interval on the NBMA
interface
ospf timer poll seconds
Optional
By default, poll packets are
sent every 40 seconds.
Configure the dead
time of the neighboring
router on the interface
ospf timer dead 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.
Configure the interval
at which the router
retransmits an LSA to
the neighboring router
on the interface
ospf timer retransmit
interval
Optional
By default, this interval is five
seconds.

H3C S3600 Series Specifications

General

Brand	H3C
Model	S3600 Series
Category	Switch
Language	English