Configuring the VLAN Egress List
Enterasys C3 Configuration Guide 14-13
Configuring the VLAN Egress List
Purpose
To assign or remove ports on the egress list of a particular VLAN. This determines which ports on
the switch will be eligible to transmit frames for a particular VLAN. For example, ports 1, 5, 7, 8
could be allowed to transmit frames belonging to VLAN 20 and ports 7,8, 9, 10 could be allowed to
transmit frames tagged with VLAN 30 (a port can belong to multiple VLAN Egress lists). Note
that the Port Egress list for ports 7 and 8 would contain both VLAN 20 and 30.
The port egress type for all ports can be set to tagged, forbidden, or untagged. In general, VLANs
have no egress (except for VLAN 1) until they are configured by static administration, or through
dynamic mechanisms such as GVRP.
Setting a port to forbidden prevents it from participating in the specified VLAN and ensures that
any dynamic requests (either through GVRP or dynamic egress) for the port to join the VLAN will
be ignored. Setting a port to untagged allows it to transmit frames without a tag header. This
setting is usually used to configure a port connected to an end user device. Frames sent between
VLAN aware switches are typically tagged.
The default VLAN defaults its egress to untagged for all ports.
Commands
show port egress
Use this command to display the VLAN membership for one or more ports.
Syntax
show port egress [port-string]
Parameters
Defaults
If port-string is not specified, VLAN membership will be displayed for all ports.
For information about... Refer to page...
show port egress 14-13
set vlan forbidden 14-14
set vlan egress 14-15
clear vlan egress 14-15
show vlan dynamicegress 14-16
set vlan dynamicegress 14-17
port-string (Optional) Displays VLAN membership for specific port(s). For a detailed
description of possible port-string values, refer to “Port String Syntax Used
in the CLI” on page 11-1.
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