
Configuring DLSw Services
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Figure 2-7. DLSw Services in Parallel with a
Source Routing Bridge
Multiple DLSw Peers on a LAN
You can configure two or more DLSw nodes on the same SRB LAN. With this
configuration, each DLSw peer reaches a different set of remote NetBIOS and
SNA systems. In this case:
•Do not define a TCP connection between these Data Link Switches.
• Assign the same virtual ring IDs to each peer.
Taking these precautions prevents frames sent by one DLSw node from
propagating through the other DLSw node on the same SRB LAN.
Memory Requirements
DLSw provides buffering of LLC2 packets in single-switch mode, and additional
buffering of TCP packets in dual-switch mode. Therefore, DLSw can use a
significant amount of memory.
Note:
Do not configure multiple data link switches on an Ethernet/802.3
LAN. DLSw over Ethernet/802.3 LANs does not provide loop prevention.
Router
Router
Source routing bridge
Token Ring/802.5
LAN segment
Frames
Frames
Token Ring/
802.5
LAN segment
TCP/IP
network
DLS0015A
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