Model 58000 Switch Operation
893-878-B
2-17
Using Virtual LANs in Model 58000 Switch Communities
When virtual LANs span across trunk links that connect Model 58000 switches
in a community, the total number of all MAC station addresses for the shared
virtual LANs must be 1024 or fewer addresses. For multiple virtual LANs
(VLANs) to span across switches, a trunk link must connect the switches (see
).
Figure 2-5.
Address allocation across trunk links where virtual LANs are
shared
You can build Model 58000 switch communities using up to 32 interconnected
switches with a combined total of up to 64 virtual LANs. You must always
consider the maximum station MAC address count for the community when
building large switched networks.
For information about the maximum number of “hops” between Model 58000
switches in a community, see
Seven-switch Limit Between End Stations
this chapter.
NOTE:
If an external device, such as a bridge/router that bridges nonroutable
protocols, is used to bridge traffic between virtual LANs, the MAC addresses
of the end stations generating the bridged traffic must be counted once, for
each virtual LAN on which the bridged traffic appears.
6393
Expansion
Module MDA
58000-106
100BASE-FX
P1
P2
58000-106
100BASE-FX
P1
P2
58000-106
100BASE-FX
P1
P2
58000-106
100BASE-FX
P1
P2
Expansion
Module MDA
58000-106
100BASE-FX
P1
P2
58000-106
100BASE-FX
P1
P2
58000-106
100BASE-FX
P1
P2
58000-106
100BASE-FX
P1
P2
Virtual LAN1
and
Virtual LAN2
Virtual
LAN1
Virtual
LAN2
Virtual
LAN1
Virtual
LAN2
Shared virtual
LANs across
trunk link
1024
893-878-B Book Page 17 Monday, May 12, 1997 2:06 PM
Summary of Contents for 58000
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