Nortel 2000 Using Manual page 64

In software version 1.1, automatic PVID automatically sets the PVID when
you configure a port-based VLAN. The PVID value will be the same value as
VLAN. The user can also manually change the PVID value.
The default setting for AutoPVID is Off; you must enable this feature.
• Protocol-based VLANs
A protocol-based VLAN is a VLAN in which you assign your switch ports as
members of a broadcast domain, based on the protocol information within the
packet. Protocol-based VLANs can localize broadcast traffic and assure that
only the protocol-based VLAN ports are flooded with the specified protocol
type packets. The maximum number of available protocols is 14.
• MAC source address (SA)-based VLANs
A MAC SA-based VLAN is a VLAN in which you assign switch ports as
members of a broadcast domain, based on the source MAC address
information within the packet. MAC SA-based VLANs can be used to
provide a MAC-level security scheme to organize and group different users.
The maximum number of available MAC SA-based VLANs is 48.
Policy-based VLANs are determined by the information within the packet. A port
can be a member of multiple policy-based VLANs. The order in which the rules
for VLAN classification are applied are:
1
Is the packet tagged?
2
Does the packet belong in a MAC SA-based VLAN?
3
Does the packet belong in a protocol-based VLAN?
If none of the criteria applies, the packet belongs in the VLAN identified by the
PVID of the ingress port. See
information.
In addition, you configure VLANs as:
• Shared VLAN Learning (SVL) mode—Multiple VLANs use a single
forwarding database.
Chapter 2, "Network
Using the Business Policy Switch 2000 Version 1.2
configuration," for more
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