Specifications

BGP Features
ExtremeWare XOS 10.1 Concepts Guide 209
enable bgp neighbor all
To configure router D, use the following commands:
create vlan db
configure vlan db add port 1
configure vlan db ipaddress 192.1.1.10/30
enable ipforwarding vlan db
configure ospf add vlan db area 0.0.0.0
create vlan de
configure vlan de add port 2
configure vlan de ipaddress 192.1.1.14/30
enable ipforwarding vlan de
configure ospf add vlan de area 0.0.0.0
disable bgp
configure bgp as-number 65002
configure bgp routerid 192.1.1.14
configure bgp confederation-id 200
enable bgp
create bgp neighbor 192.1.1.9 remote-AS-number 65001
create bgp neighbor 192.1.1.13 remote-AS-number 65002
configure bgp add confederation-peer sub-AS-number 65001
enable bgp neighbor all
To configure router E, use the following commands:
create vlan ed
configure vlan ed add port 1
configure vlan ed ipaddress 192.1.1.13/30
enable ipforwarding vlan ed
configure ospf add vlan ed area 0.0.0.0
disable bgp
configure bgp as-number 65002
configure bgp routerid 192.1.1.13
configure bgp confederation-id 200
enable bgp
create bgp neighbor 192.1.1.14 remote-AS-number 65002
enable bgp neighbor 192.1.1.14
Route Aggregation
Route aggregation is the process of combining the characteristics of several routes so that they are
advertised as a single route. Aggregation reduces the amount of information that a BGP speaker must
store and exchange with other BGP speakers. Reducing the information that is stored and exchanged
also reduces the size of the routing table.
Using Route Aggregation
To use BGP route aggregation, follow these steps: