Configuring OSPF

Since dynamic memory allocation is automatic and requires no configuration, the following CLI commands and equivalent Web management options are not supported in software release 07.1.X:

•maximum-number-of-lsa external <num>

•maximum-number-of-lsa router <num>

•maximum-number-of-lsa network <num>

•maximum-number-of-lsa summary <num>

•max-routes <num>

If you boot a device that has a startup-config file that contains these commands, the software ignores the commands and uses dynamic memory allocation for OSPF. The first time you save the device’s running configuration (running-config) to the startup-config file, the commands are removed from the file.

NOTE: The external-lsdb-overflowcommand is still supported in accordance with RFC 1765.

To display the current allocations of dynamic memory, enter the show memory command. See the Command Line Interface Reference.

Configuring OSPF

To begin using OSPF on the routing switch, perform the steps outlined below:

1.Enable OSPF on the routing switch.

2.Assign the areas to which the routing switch will be attached.

3.Assign individual interfaces to the OSPF areas.

4.Define redistribution filters, if desired.

5.Enable redistribution, if you defined redistribution filters.

6.Modify default global and port parameters as required.

7.Modify OSPF standard compliance, if desired.

NOTE: OSPF is automatically enabled without a system reset.

Configuration Rules

•If a routing switch is to operate as an ASBR, you must enable the ASBR capability at the system level.

•Redistribution must be enabled on routing switches configured to operate as ASBRs.

•All routing switch ports must be assigned to one of the defined areas on an OSPF routing switch. When a port is assigned to an area, all corresponding sub-nets on that port are automatically included in the assignment.

OSPF Parameters

You can modify or set the following global and interface OSPF parameters.

Global Parameters

•Modify OSPF standard compliance setting.

•Assign an area.

•Define an area range.

•Define the area virtual link.

•Set global default metric for OSPF.

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