
Data Link Switching Overview
114063 Rev. A 1-17
Figure 1-9. Locally Acknowledged Synchronous Pass-through in (a) Single- and
(b) Dual-Switch DLSw Networks
Front-end
processer
Host
3174
SDLC
SDLC
3174
3174
Front-end
processer
Host
3174
3174
3174
SDLC
secondary
router
SDLC primary
routers
(local acknowledgment)
IP
Backbone
(a) Single switch DLSw network
(b) Dual switch DLSw network
SDLC SDLC TCP/IP
SDLC SDLC
Secondary operations Primary operations
DSW0025A
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