Avaya Configuring MPOA Services Manual de usuario descargar pdf (Pagina 22)

Configuring MPOA and NHRP Services

1-2

309249-14.00 Rev 00

Multi-Protocol over ATM

As defined by the ATM Forum, Multi-Protocol over ATM (MPOA) maps routed

and bridged traffic flows to ATM SVCs, thereby removing many performance

limitations imposed by the multihop routing of individual packets. This technique

of mapping identifiable traffic flows to virtual channels creates network

“shortcuts” between source and destination clients, and is generally referred to as

cut-through or zero-hop routing. Figure 1-1

shows how users on LAN 1 or LAN 2

can communicate efficiently over an independent layer 2 (ATM) virtual channel,

established by means of MPOA and NHRP negotiations.

Figure 1-1. ATM Zero-Hop (Cut-Through) Routing

MPOA supports communication between an MPOA client (MPC), typically an

ATM edge device or switch, and its MPOA server (MPS), typically a router.

NHRP supports communication between MPSs.

BCC0029A

MPOA server 1

(MPS)

MPOA client 1

(MPC)

MPOA servers

(MPSs)

MPOA server

(MPS)

ATM ELAN

MPOA client 2

(MPC)

ATM ELAN

ATM ELAN, PVC

or RFC 1577 SVC

ATM ELAN, PVC

or RFC 1577 SVC

LAN 2LAN 1

Cut-through (zero-hop) route (ATM SVC)

Established through MPOA/NHRP negotiations

MPOA

NHRP NHRP

MPOA

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 147 148

Sin comentarios

Avaya Configuring MPOA Services Manual de usuario Pagina 22