Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manuel d'utilisateur télécharger pdf (Page 27)

100

101

Exterior Gateway Protocols (BGP/EGP)

308628-14.00 Rev 00

1-7

Figure 1-3. Transit AS

In Figure 1-3, AS 20 is the transit AS. It provides information about its internal

networks, as well as transit networks, to the remaining ASs. The IBGP

connections between BGP routers A, B, and C are necessary to provide consistent

information to the ASs.

IBGP Route Reflector

A BGP router configured for IBGP must establish a peer-to-peer session with

every other IBGP speaker in the AS. In an AS with a large number of IBGP

speakers, this full-mesh topology can result in high bandwidth and maintenance

costs. For example, a full-mesh topology for an AS with 50 IBGP speakers

requires 1225 internal peer-to-peer connections.

AS 20

AS 10

AS 50

AS 11

AS 12

AS 30

IGP

BGP A

BGP B

BGP C

IP0021A

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 307 308

Commentaires sur ces manuels

Pas de commentaire

Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manuel d'utilisateur Page 27

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP)