Allied Telesis x908, X8100 manual Configuring a set clause, A next hop address, An origin

awplus(config-route-map)#

BGP: Configuring Route Maps

Once you have made the ACL, apply it to the match clause of a route map entry by using the command:

awplus(config-route-map)# match ip address <acl-number-or-name>

A next hop address

You can use either a prefix list or an ACL to specify a next hop address. Once you have made the prefix list or ACL, apply it to the match clause of a route map entry by using one of the commands:

awplus(config-route-map)# match ip next-hopprefix-list<list-name>awplus(config-route-map)# match ip next-hop<acl-number-or-name>

An update message matches this route map entry if the next-hop attribute in the update equals an IP address permitted in the prefix list or ACL.

An origin

To match an origin, use the command:

awplus(config-route-map)#match origin {egpigpincomplete}

An update message matches this route map entry if the origin attribute in the update equals the origin specified in the entry.

A metric (the MED attribute)

To match the MED value, use the command:

awplus(config-route-map)# match metric <med-value>

An update message matches this route map entry if the MED attribute in the update equals the value specified in the entry.

Configuring a set clause

If a packet matches the match clause, then the action of the route map entry will be applied to that packet. The action might simply be to permit or deny the packet, or it might be to update its attributes by applying one or more set clauses.

Note: When configuring a set clause, make sure you are in route map mode for the same route map name sequence number as you used for the match clause. The prompt should look like this:

A set clause can change any of the following attributes on an update message:

AS path Multiple Autonomous System numbers (ASNs) can be added to the AS path attribute in the update packet. Use the command:

set as-path prepend <asn-list>

If adding multiple ASNs, separate them with spaces.

Page 30 Use Route Maps and Other Filters to Filter and Alter BGP and OSPF Routes