Visara CNA-8000 Planning Guide - Manual (Page 28)

Chapter 3. Integrated Data Link Switching
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The CNA-8000, by inclusion of the DLSw feature eliminates the need on the host side of
the network to move LLC2 protocol over the LAN and in some cases may result in a
simplified network. The host connectivity for the DLSw feature is the XCA feature
described previously. The downstream connectivity can be a router with DLSw capability
or some other device capable of communicating with RFC 2166, 1795, or 1434.
Note the improvements:
• DLSw feature moved from Router to the CNA-8000.
• Token Ring connection converted to Ethernet and possibly just a connection from
the FEP directly into the router.
• LLC2 protocol eliminated from the host side LAN
• If Visara 1174 remote controller used, elimination of LLC2 traffic from the
remote LAN as well.
• DLSw eliminated from the remote routers.
IP IP
Router
Router
Router
CNA-8000
Mainframe
Visara 1174 Controller
wPC Gateway
Running RFC 1434
Visara 1174
Controller
Running RFC 1434
IP
IP
IP