Bay Networks Centillion 5000 5000BH, Using Manual, Page: 28 / 70

Using the 8-port TokenSpeed and TokenSpeed/MCP Switch Modules
2-6
893-01019-A
Figure 2-5 shows a network where each ring segment uses a separate router port.
By using a TokenSpeed module in a Centillion switch, you can concentrate many
physical ring segments into a few logical rings that use fewer router ports.
Figure 2-5. Concentrating multiple rings into a router
Centillion 50
token ring
switch
Router
User rings
Ring 20
Ring 3
Before: 20 router ports; 20 logical rings
After: 2 router ports; 2 logical rings
Ring 2
Ring 1
7571EA
User rings
Ring segment 20
Ring segment 2
Ring segment 1
Router Server
Ring 1
Ring 2
= Virtual ring
Server
TKNSPD.BK Page 6 Thursday, July 17, 1997 11:43 AM