BGP ROUTE-MAP SET MED

In the following example,

route map freddy marks all paths originating from autonomous system 690 with a Multi Exit Discriminator
(MED) metric attribute of 127. The second permit clause is required so that routes not matching autonomous system path list 1 will still be sent to neighbor 1.1.1.1.

router bgp 100
neighbor 1.1.1.1 route-map freddy out
!
!
route-map freddy permit 10
match as-path 1
set metric 127
!
route-map freddy permit 20
match as-path 2
!
!
ip as-path access-list 1 permit ^690_
ip as-path access-list 2 permit .*