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Using the Business Policy Switch 2000 Version 1.2
OR
•Independent VLAN Learning (IVL) mode—Each VLAN uses a unique
forwarding database.
The IVL mode is only an option when using the Business Policy Switch 2000; you
must use the SVL mode when operating a hybrid stack. Business Policy Switches
support up to 64 VLANs (port-, protocol-, or MAC SA-based), including VLAN
#1 which is always port-based. With software version 1.2, the switch supports up
to 256 VLANs. (The maximum number of available MAC SA-based VLANs is
always 48.)
When a switch port is configured to be a member of a VLAN, it is added to a
group of ports (workgroup) that belong to one broadcast domain. You can assign
different ports (and therefore the devices attached to these ports) to different
broadcast domains. This feature allows network flexibility because you can
reassign VLANs to accommodate network moves, additions, and changes,
eliminating the need to change physical cabling.
Using 256 VLANsThe BPS 2000 software version 1.2 provides support for 256 VLANs. These 256
can be spread among port-based, protocol-based, and MAC SA-based VLANs
(maximum of 48 MAC source address-based VLANs).
Note: The maximum 256 VLANs is supported only if the Stack
Operational Mode is in Pure BPS 2000 Stack mode. A standalone BPS
2000 also supports a maximum 256 VLANs. (The maximum number of
MAC SA-based VLANs is always 48.)
A mixed stack that consists of BPS 2000 and BayStack 450 switches has
only 64 VLANs.
If you change from a Pure BPS 2000 Stack to a Hybrid Stack, you lose
all VLANs.