• Author : Nikhil Satish Pai


OSPFv3 Area Filter

Description In an OSPFv3 Area Border Router (ABR), area filters may be used to prevent specific prefixes from being announced by an area as Inter-area Summary LSAs. The set of prefixes to be filtered can be configured one at a time or using a prefix-list. The feature can be used to prevent an area from receiving Inter-Area Summary LSAs from a specified subnet in both the IPv4 and the IPv6 address families. This is available with both the multi-agent and the ribd routing protocol model. Platform compatibility This feature is supported on all platforms Configuration The area filter command is...
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Redistributing OSPFv2 routes between multiple instances

Description This feature may be used for redistributing OSPFv2 leaked and non leaked routes from one instance to another when multiple OSPFv2 instances are configured. Platform compatibility This feature is supported on all platforms in the multi-agent routing mode. Configuration This feature is configured under the “router ospf …” mode. switch(config-router-ospf)#redistribute ospf instance [ include leaked ] [ match ( external | internal | nssa-external ) ] [ route-map <route-map-name> ] Either non leaked routes or both leaked and non leaked routes can be redistributed using the command switch(config-router-ospf)#redistribute ospf instance ? include Include leaked routes match Routes learned by...
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Route-Map Match Ospf Instance Support

Description This feature adds support for the match ospf instance <instanceID> clause under the route-map config. This clause allows filtering of routes based on the OSPFv2 instance Identifier when redistributing OSPFv2 routes into IS-IS or BGP. Platform compatibility This feature is platform independent. Configuration This feature is configured under route map config. Command: [no|default] match ospf instance <instanceID> switch(config)#route-map rm1 permit 10 switch(config-route-map-rm1)#match ospf ? instance Route instance switch(config-route-map-rm1)#match ospf instance ? <1-65535> OSPF instance identifier Show commands The following command can be used to show information about all the configured match clause in the route maps switch#show route-map route-map...
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OSPFv2 Traffic Engineering

Description OSPF supports all of RFC3630 and parts of RFC4203. When configured, OSPF generates the following information in traffic engineering LSAs: Router Address TLV Link TLV Link type Link ID Local interface IP address Remote interface IP address Traffic engineering metric Maximum bandwidth Maximum reservable bandwidth Unreserved bandwidth Administrative group Shared Risk Link Group Platform compatibility This feature is supported on all platforms. Configuration To configure OSPF traffic engineering, first enter the traffic engineering mode: router ospf <id>    traffic-engineering By default, traffic engineering is not enabled in any area. To enable OSPF traffic engineering in all areas: router ospf...
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