Border Gateway Protocol (Bgp) Overview; Bgp Features Supported By Software Release; Table 1: Bgp Features By Software Release - Avaya 8000 Technical Configuration Manual

1. Border Gateway Protocol (BGP) Overview

The Border Gateway Protocol (BGP) is an exterior gateway protocol that border routers use to exchange
network reachability information with other BGP systems. BGP routers form peer relationships with other
BGP routers. Using an entity called a BGP Speaker, BGP peers transmit and receive current routing
information over a reliable transport layer connection, making periodic updates unnecessary. BGP can be
used both within and between autonomous systems.
BGP peers exchange complete routing information only when they establish the peer connection.
Thereafter, BGP peers exchange routing information in the form of routing updates. An update includes a
network number, a list of autonomous systems that the routing information has passed through (the AS
path), and other path attributes that describe the route to a set of destination networks. When multiple
paths are available, BGP compares the path attributes to choose the preferred path.
In addition to exchanging BGP information between autonomous systems, you can use BGP to exchange
BGP information between routers in the same AS. To differentiate between these uses, the latter is called
interior BGP (IBGP).

BGP Features Supported by software release

2.
Feature
eBGP (GRT & VRF)
eBGP (GRT & VRF) and
iBGP (GRT only)
4-byte AS
BGP+ RFC2545 (GRT only)
January 2016

Table 1: BGP Features by Software Release

ERS 8800 VSP 4000
7.0 3.1
7.0 4.2.0
7.1.0 3.1.0
7.0 5.0
Avaya Inc. – External Distribution
VSP 7200 VSP 8000
4.2.1.0 4.1.0
4.2.1.0 4.2.0
4.2.1 4.1.0
5.0 5.0
avaya.com
VSP 9000
3.0
3.0
3.2.0
4.1.0
11