IBM 600 Product Overview page 4

Added capacity and flexibility
With the 8270 you get added capacity
and flexibility at a low cost per port.
The LAN shown in Figure 1 has
provided excellent service in this data
environment. But growth and new
graphics applications are causing
performance problems on this
traditional, shared-media, 16-Mbps
LAN.
Combining switching, full-duplex-
attached servers and micro-seg-
mented, shared-media LANs (Figure 2)
gives the following advantages:
• No change to installed adapters
• No change to house wiring
• No change to application software
• Fewer users per segment
• More bandwidth per user
• Reduction in the number of bridges
• Reduced complexity
• Reduced cost
8270 Nways LAN Switch Family
Backbones remain overburdened by
demands of e-mail, busy servers and
Internet traffic (see Figure 3).
The 8270 can act as a powerful
workgroup switch or replace the entire
backbone with a single switch (see
Figure 4). Use TokenPipes to double or
quadruple the bandwidth if you need it.
TokenPipe allows you to connect up to
four parallel, 32-Mbps paths between
any two Token-Ring switches, provid-
ing as much capacity between
switches as you need. This solution
means:
• No change to application software
• Elimination or reduction of bridges
• Elimination of all routers except those
on the periphery
• Scalable bandwidth between
switches using TokenPipes
• Simplified network management
Figure 1. A typical Token-Ring LAN experiencing congestion
Figure 2. A Token-Ring switch relieving that congestion
www.networking.ibm.com
2210 Router
1.
8230 Controlled Access Unit
2.
8229 Bridge
3.
8239 Token-Ring Stackable Hub
4.
2210 Router
1.
8230 Controlled Access Unit
2.
8229 Bridge
3.
8239 Token-Ring Stackable Hub
4.
8270 Nways Token-Ring LAN Switch Model 600
5.
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