Using the Web Browser Interface for Advanced Configuration Tasks
Routing
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6.
If necessary, you can alter the global OSPF timers. (Table 16-7 shows the
default settings and valid ranges for these timers.)
a.
Enter a value for the LSA, or refresh, interval in the LSA Interval field.
The LSA interval dictates how often all router interfaces must send
periodic LSAs.
b. The two delay timers save processing power by preventing a router
from continuously calculating new best routes. Enter a value in the
Calculation Delay field to specify how long the router must wait after
a topological change before recalculating a route. Enter a value in the
Hold Time field to specify how long the router must wait between
calculations.
Table 16-7. Global OSPF Intervals
Interval
Meaning
refresh
the maximum time before
sending a new LSA
calculation delay
the time between
receiving topological
changes and beginning
shortest path first (SFP)
calculations
hold time
time between
consecutive SFP
calculations
7.
After you have configured the parameters that you want, click Apply.
Configuring OSPF Parameters for Individual Interfaces
Advanced OSPF configuration also allows you to:
enable authentication (you must set the key in the CLI)
set the cost for a link
set OSPF timers for individual interfaces
Complete these steps:
1.
Move to the main OSPF windows.
2.
Move to the Advanced OSPF Configuration window and click the
Advanced button.
3.
The Interface OSPF Configuration window displays interfaces running
OSPF. Select an interface if you want to configure OSPF options for it.
Default
Range
240 seconds
10 to 1,800 (30 minutes)
5 seconds
0 to 4,294,967,295
10 seconds
10 to 1,800