Bgp Peers - Motorola BSR 2000 Configuration And Management Manual

BSR 2000 Configuration and Management Guide
You can configure BGP operating parameters manually. BGP selects among different
routes by comparing specific path attributes or metrics for each route. The local
administrator can configure each of these and assign them different values.
AS 100
Boston

BGP Peers

BGP provides a means for BGP peers, or neighbors, to exchange routing information
within an AS (IBGP) and with peers within other ASs (EBGP). Information is
exchanged between peers about the following:
BGP does not require routing information to be refreshed. Advertised route
information is considered valid by its neighbors until the first router explicitly
advertises that the information is no longer valid or until the BGP session is lost.
12-4
1
NY
IBGP
IBGP
Dallas
Figure 12-1 Advertising BGP Routes
New active routes and their attributes
Inactive routes
Unusual conditions that require connection termination
2
EBGP
5
4
EBGP
MGBI
Release 1.0
AS 200
LA
3
EBGP
AS 300
Miami
bgp0003
526360-001-00 Rev. B