Nortel Networks 42C4911 Switch User Manual


 
Alteon OS Application Guide
Chapter 11: Border Gateway Protocol
17742C4911, January 2007
3. (Optional) Configure the attributes in the AS filter menu.
4. Set up the BGP attributes.
If you want to overwrite the attributes that the peer router is sending, then define the following
BGP attributes:
Specify the AS numbers that you want to prepend to a matched route and the local prefer-
ence for the matched route.
Specify the metric [Multi Exit Discriminator (MED)] for the matched route.
5. Enable the route map.
6. Assign the route map to a peer router.
Select the peer router and then add the route map to the incoming route map list,
or to the outgoing route map list.
>> # cfg/l3/rmap 1/aspath 1 (Specify the attributes in the filter)
>> AS Filter 1#
as 1 (Specify the AS number)
>> AS Filter 1#
action deny (Specify the action for the filter)
>> AS Filter 1#
ena (Enable the AS filter)
>> # cfg/l3/rmap 1 (Specify a route map number)
>> IP Route Map 1#
ap (Specify the AS numbers to prepend)
>> IP Route Map 1#
lp (Specify the local preference)
>> IP Route Map 1#
met (Specify the metric)
>> #
cfg/l3/rmap 1/en (Enable the route map)
>> #
cfg/l3/bgp/peer 1/addi (Add to the incoming route map)
>> #
cfg/l3/bgp/peer 1/addo (Add to the outgoing route map)