Nortel 450-24t 用户指南
Using the BayStack 450 10/100/1000 Series Switch
D-14
309978-D Rev 01
LECs and VLAN Membership
The following configuration rules apply:
•
You cannot assign a LEC as a tagged VLAN member.
•
The PVID value for a LEC is read-only and must always equal its VLAN ID.
•
LEC VLAN members do not support priority.
•
A LEC can only be a member of one VLAN.
•
A VLAN can only have one LEC member.
•
LECs can be configured as members of port-based VLANs only; LECs cannot
be configured as members of protocol-based VLANs.
be configured as members of protocol-based VLANs.
Console Differences
Many of the features that are available to your BayStack 450 switch
Ethernet-based ports cannot be supported by ATM. In those cases the VPorts that
represent the ATM LECs will either be hidden or displayed as read-only fields.
Ethernet-based ports cannot be supported by ATM. In those cases the VPorts that
represent the ATM LECs will either be hidden or displayed as read-only fields.
The following BayStack 450 switch features are not supported by the BayStack
450-2M3/2S3 MDA:
450-2M3/2S3 MDA:
•
MultiLink Trunking
•
Port Mirroring
•
Filtering of untagged/tagged frames
•
VLAN Traffic Class Priority
•
Change of PVID
•
Protocol-based VLANs
•
VLAN tagging
•
Rate Limiting