Avaya Configuring DLSw Services Bedienungsanleitung PDF herunterladen (Seite 38)

Configuring DLSw Services

1-16

304233-A Rev. 00

DLSw dual-switch services uses TCP/IP between routers, unlike adjacent single-

switch routers using LLC2. DLSw dual-switch services provide:

• IP routing, permitting delivery over any available path

• TCP services, providing reliable data delivery, reduced network overhead, and

flow control mechanisms to manage traffic

Packets are carried to an attached Bay Networks DLSw node where the data is

translated into SSP datagrams. The data is then routed over the multiprotocol

backbone to a remote Bay Networks DLSw node using an IP routing protocol.

When the SSP datagram reaches the remote Bay Networks DLSw node, it is

translated into the appropriate frame and carried to its destination.

Figure 1-7

shows how SNA devices use DLSw dual-switch services to

communicate over TCP/IP. This differs from adjacent single-switch operation,

which uses LLC2 on the backbone.

Figure 1-7. DLSw Dual-Switch Services for SNA Devices on LANs

IP LLC2

LLC2 or SDLC

Bay Networks router

Token Ring

Bay Networks router

SDLC

Cluster controller

LLC2

SSP SSP

Token Ring

Ethernet

TCP/IP

network

NetBIOS

server

Logical connection

SNA

processor

DLS0004A

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Avaya Configuring DLSw Services Bedienungsanleitung Seite 38