Motorola BSR 2000, Configuration And Management Manual

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Release 1.0 Configuring OSPF
526360-001-00 Rev. B MGBI 11-17
Configuring Route Calculation Timers
Timers are used by routing protocols to determine time intervals for when route
information is adjusted:
Use the timers spf command in Router Configuration mode to configure the delay
time after OSPF receives a topology change until it starts a shortest path first (SPF)
calculation and hold time between two consecutive SPF calculations, as shown in the
following example:
MOT(config-ospf)#
timers spf {<
0-65535
> <
0-65535
>}
where:
0-65535
is the time delay in seconds between receiving a change to the SPF
calculation.
0-65535
is the hold-time in seconds between consecutive SPF calculations.
Configuring OSPF on an Interface
The following sections are used to configure interface-specific parameters for OSPF
and how to set up OSPF on a passive or loopback interface:
■
Configuring General OSPF Interface Parameters
■
Blocking OSPF LSA Flooding
■
Forcing Router ID Choice with Loopback Interface
Configuring General OSPF Interface Parameters
You can change certain interface-specific OSPF parameters using the ip ospf
hello-interval , ip ospf dead-interval , and ip ospf authentication-key commands. If
you change these parameters, ensure that the configurations for all routers on your
network have compatible values. You can change the parameters shown in
Table 11-1 :
Table 11-1 OSPF Parameters
Parameter Description Default Values
cost Metric value for sending a packet on
an OSPF interface; the higher the
bandwidth, the lower the cost 10
8
/
bandwidth
1 to 65535
retransmit-interval Time interval between LSA
retransmissions 5 seconds 1 to 65535
seconds