Dell PowerConnect B-RX BigIron RX Series Configuration Guide v02.8.00 - Page 1217

Clearing BGP4+ information 45 BigIron RX(config)# clear ipv6 bgp nei peer_group1 soft in prefix-filter Syntax: clear ipv6 bgp neighbor | [soft in prefix-filter] The parameter specifies a neighbor by its IPv6 address. You must specify this address in hexadecimal using 16-bit values between colons as documented in RFC 2373. The specifies all neighbors in a specific peer group. If you use the soft in prefix-filter keyword, the switch sends an updated IPv6 prefix list to the neighbor as part of its route refresh message to the neighbor. Closing or resetting a BGP4+ neighbor session You can close a neighbor session or resend route updates to a neighbor. You can specify all neighbors, a single neighbor, or all neighbors within a specific peer group or AS. If you close a neighbor session, the switch and the neighbor clear all the routes they learned from each other. When the switch and neighbor establish a new BGP4+ session, they exchange route tables again. Use this method if you want the switch to relearn routes from the neighbor and resend its own route table to the neighbor. If you use the soft-outbound keyword, the switch compiles a list of all the routes it would normally send to the neighbor at the beginning of a session. However, before sending the updates, the switch also applies the filters and route maps you have configured to the list of routes. If the filters or route maps result in changes to the list of routes, the switch sends updates to advertise, change, or even withdraw routes on the neighbor as needed. This ensures that the neighbor receives only the routes you want it to contain. Even if the neighbor already contains a route learned from the switch that you later decided to filter out, using the soft-outbound option removes that route from the neighbor. If no change is detected from the previously sent routes, an update is not sent. For example, to close all neighbor sessions and thus flush all the routes exchanged by the switch and all neighbors, enter the following command at the Privileged EXEC level or any of the Config levels of the CLI. BigIron RX# clear ipv6 bgp neighbor all Syntax: clear ipv6 bgp neighbor all | | | [soft-outbound | soft [in | out]] The all | | | specifies the neighbor. The parameter specifies a neighbor by its IPv6 address. You must specify this address in hexadecimal using 16-bit values between colons as documented in RFC 2373. The specifies all neighbors in a specific peer group. The parameter specifies all neighbors within the specified AS. The all keyword specifies all neighbors. Use the soft-outbound keyword to perform a soft reset of a neighbor session and resend only route update changes to a neighbor. Use the soft in parameter to perform a soft reset of a neighbor session and requests a route update from a neighbor. Use the soft out parameter to perform a soft reset of a neighbor session and resend all routes to a neighbor. BigIron RX Series Configuration Guide 53-1002253-01 1141