H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 3 OSPF Configuration
3-33
z Configure OSPF network management functions, such as binding OSPF MIB with
a process, sending trap information and collecting log information.
3.7.1 Prerequisites
Before configuring OSPF network optimization, you have configured:
z IP addresses for interfaces;
z OSPF basic functions.
3.7.2 Configuring OSPF Packet Timers
You can configure the following timers on OSPF interfaces as needed:
z Hello timer: Interval for sending hello packets. It must be identical on OSPF
neighbors. The longer the interval, the lower convergence speed and smaller
network load.
z Poll timer: Interval for sending hello packets to the neighbor that is down on the
NBMA network.
z Dead timer: Interval within which if the interface receives no hello packet from the
neighbor, it declares the neighbor is down.
z 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:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter interface view
interface interface-type
interface-number
—
Specify the hello
interval
ospf timer hello
seconds
Optional
The hello interval on P2P,
Broadcast interfaces defaults to
10 seconds and defaults to 30
seconds on P2MP and NBMA
interfaces.
Specify the poll
interval
ospf timer poll seconds
Optional
The poll interval defaults to 120
seconds.
Specify the dead
interval
ospf timer dead
seconds
Optional
The default dead interval is 40
seconds on P2P, Broadcast
interfaces and 120 seconds on
P2MP and NBMA interfaces.