
Configuring DLSw Services
1-6
Figure 1-3 illustrates a network using adjacent routers, each performing single-
switch conversion. Between single switch routers, the LLC2 protocol is used.
Figure 1-3. Bay Networks Adjacent Single Switch Routers
DLSw Dual Switch Services
DLSw dual switch services allows SNA and NetBIOS traffic to share a
multiprotocol backbone. The DLSw standard specifies TCP/IP as the standard
transport mechanism for SNA and NetBIOS across an internetwork.
DLSw dual switch services uses TCP/IP between routers, unlike adjacent single
switch routers using LLC2. DLSw dual switch services provides
• IP routing, permitting delivery over any available path
• TCP services, providing reliable data delivery, reduced network overhead, and
flow control mechanisms to manage traffic
LLC 2 LLC 2
LLC 2 or SDLC
Bay Networks Router
Token Ring
Bay Networks Router
SDLC
Cluster Controller
LLC
LLC2 LLC2
Token Ring
Ethernet
Backbone
Network
NetBIOS
Server
Logical Connection
SNA
Processor
Frame Relay
(Only)
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