Netgear GSM7252PS ProSafe Managed Switch Web Management User Manual - Page 270

ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual OSPF Configuration 1. Use Router ID to specify the 32-bit integer in dotted decimal format that uniquely identifies the router within the autonomous system (AS). If you want to change the Router ID you must first disable OSPF. After you set the new Router ID, you must re-enable OSPF to have the change take effect. The default value is 0.0.0.0, although this is not a valid Router ID. 2. Use Admin Mode to select enable or disable. If you select enable, OSPF will be activated for the switch. The default value is disable. You must configure a Router ID before OSPF can become operational; see step 1 or by issuing the CLI command: (Config-router)#router-id. 3. Enable or disable RFC 1583 Compatibility to specify the preference rules that will be used when choosing among multiple AS-external-LSAs advertising the same destination. If you select enable, the preference rules will be those defined by RFC 1583. If you select disable, the preference rules will be those defined in Section 16.4.1 of the OSPF-2 standard (RFC 2328), which will prevent routing loops when AS-external-LSAs for the same destination have been originated from different areas. The default value is 'enable'. All routers in the OSPF domain must be configured the same. If all OSPF routers are capable of operating according to RFC 2328, RFC 1583 Compatibility should be disabled. 4. Set the Opaque LSA Status parameter to enable if OSPF should store and flood opaque LSAs. An opaque LSA is used for flooding user-defined information within an OSPF router domain. 5. Use Exit Overflow Interval(secs) to specify how long OSPF must wait before attempting to leave overflow state. When the number of non-default external LSAs exceeds a configured limit, the router enters an overflow state as defined in RFC 1765. In overflow state, OSPF cannot originate non-default external LSAs. If the Exit Overflow Interval is 0, OSPF will not leave overflow state until it is disabled and re-enabled. The range is 0 to 2,147,483,647 seconds. 6. Use SPF DelayTime(secs) to specify the number of seconds from when OSPF receives a topology change to the start of the next SPF calculation. Delay Time is an integer from 0 to 65535 seconds. The default time is 5 seconds. A value of 0 means that there is no delay; that is, the SPF calculation is started upon a topology change. 7. Use SPF HoldTime(secs) to specify the minimum time in seconds between two consecutive SPF calculations. The range is 0 to 65,535 seconds. The default time is 10 seconds. A value of 0 means that there is no delay; that is, two SPF calculations can be done, one immediately after the other. 8. Use External LSDB Limit to set the number of the external LSDB limit for OSPF. If the value is -1, then there is no limit. When the number of non-default AS-external-LSAs in a router's link-state database reaches the external LSDB limit, the router enters overflow state. The router never holds more than the external LSDB limit none-default AS-external-LSAs in database. The external LSDB limit MUST be set identically in all routers attached to the OSPF backbone and/or any regular OSPF area. The range for limit is -1 to 2147483647. 9. Use Default Metric to set a default for the metric of redistributed routes. This field is blank if a default metric has not been configured. The range of valid values is 1 to 16777214. 10. Use Maximum Paths to set the number of paths that OSPF can report for a given destination. The range of valid values is 1 to 4. 11. Use AutoCost Reference Bandwidth to configure the auto-cost reference-bandwidth to control how OSPF calculates link cost. Specify the reference bandwidth in megabits per 270 | Chapter 4. Routing