
Configuring DLSw Services
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Figure 1-6 illustrates a DLSw dual switch-to-switch network with SDLC clients
using DLSw services at the local router to communicate over TCP/IP with a
remote host attached to a Token Ring LAN.
Figure 1-6. SDLC Conversion in a Dual Switch-to-Switch Configuration
In this example, the local router performs the following operations:
• Terminates the SDLC sessions
• Converts the SDLC traffic to DLSw SSP format for TCP/IP routing
• Forwards the traffic to the remote router
The DLSw remote router does the following:
• Converts the traffic to the appropriate format
• Sends the traffic to the destination host
In
Figure 1-6, the SDLC clients appear to the network and to the Token Ring
LAN-attached host as if they were natively attached LAN devices.
In both single and dual switch-to-switch networks, you must map the addresses of
the SDLC devices to Token Ring/802.5 addresses. To map the addresses, you
configure the SDLC devices as local devices, enabling them to appear to the
network as natively attached LAN devices. Chapter 5 describes how to configure
local devices.
Client
Remote
Router
Local
Router
Remote
Host
Client
Client
Modem
Sharing
Device
Token Ring
LAN
TCP/IP
Network
SDLC
SDLC
DSW0006A
SDLC
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