This command configures BGP to advertise routes learned by means outside of BGP. BGP can redistribute local (connected), static, OSPF, and RIP routes.
The distribute-list out command can also be used to filter redistributed routes by prefix. Either a redistribute route map or a distribute list may be configured, but not both.
A default route cannot be redistributed unless the default-information originate command is given.
If a route map is configured, match as-path and match community terms are ignored. If no route map is configured with the name given, no prefixes are redistributed.
| Default | BGP redistributes no routes by default. When BGP redistributes OSPF routes, it redistributes only internal routes unless the match option specifies external routes. |
| Format | redistribute {ospf | rip | connected | static} [metric metric-value] [match {internal | external 1 | external 2 | nssa-external 1 | nssa-external 2}] [route-map map-tag] |
| Mode | IPv4 VRF Address Family Config |
| Parameter | Description |
|---|---|
| ospf, rip, connected, static | A source of routes to redistribute. |
| metric metric-value | (Optional) When this option is specified, BGP advertises the prefix with the Multi Exit Discriminator path attribute set to the configured value. If this option is not specified, but a default metric is configured for BGP, then the MED is set to the default metric. If a default metric is not configured, then the prefix is advertised without a MED attribute. |
| match | (Optional) If you configure BGP to redistribute OSPF routes, BGP by default only redistributes internal routes OSPF intra-area and inter-area routes). Use the match option to configure BGP to also redistribute specific types of external routes, or to disable redistribution of internal OSPF routes. |
| route-map map-tag | (Optional) A route map can be used to filter redistributed routes by destination prefix using a prefix list. A route map can be used to set attributes on redistributed routes. |
