Cisco Systems IPMUX-1E operation manual User Untagged Mode

IPmux-1/1EInstallation and Operation Manual Chapter 1 Introduction

User Untagged 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 1-9. User Untagged Mode

Frame Action	Switch Action
A tagged frame enters the Network port
Both User and Network ports are members of	Switched to User port*, and the tag is removed
frame’s VLAN
Either the User or Network port is not a	Discarded
member of frame’s VLAN
A tagged frame enters the User port
Both User and Network port are members of	Switched to Network port without changing the
frame’s VLAN	frame*
Either the User or Network port is not a	Discarded
member of frame’s VLAN
An untagged frame enters the Network port (see
Note 2)
Both User and Network ports are members of	Switched to User port without changing the frame*
the Network port default VLAN
Either the User or Network port is not a	Discarded
member of the Network port default VLAN
An untagged frame enters the User port**
Both User and Network ports are members of	Switched to Network port*
the User port default VLAN	Default User port VLAN ID is added with
	priority 0
Either the User or Network port is not a	Discarded
member of the User port default VLAN

Notes * 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.

Functional Description 1-29