Chapter 1 Introduction IPmux-1/1E Installation and Operation Manual
1-28 Functional Description
User Tagged Mode
Features:
• Network port learning is based on MAC+VLAN
• User port learning is based on MAC+VLAN
• TDMoIP & Managers traffic must be tagged.
Table 1-8. User Tagged Mode
Frame Action Switch Action
A tagged frame enters the Network port
Both User and Network ports are members of
frame’s VLAN
Switched to User port without changing the frame*
Either the User or Network port is not a
member of frame’s VLAN
Discarded
A tagged frame enters the User port
Both User and Network port are members of
frame’s VLAN
Switched to Network port without changing the
frame*
Either the User or Network port is not a
member of frame’s VLAN
Discarded
An untagged frame enters the Network port (see
Note 2)
Both User and Network ports are members of
the Network port default VLAN
Switched to User port*
Default Network port VLAN ID is added with
priority 0
Either the User or Network port is not a
member of the Network port default VLAN
Discarded
An untagged frame enters the User port**
Both User and Network ports are members of
the User port default VLAN
Switched to Network port*
Default User port VLAN ID is added with
priority 0
Either the User or Network port is not a
member of the User port default VLAN
Discarded
* The switch may decide not to pass the frame to the other port, based on its
learning.
** A priority-tagged frame (frame with a tag and VLAN-ID 0) is treated just like an
untagged frame. This includes rewriting the priority field with 0.
Notes