Reference Guide

Trunking Mode Native VLAN tagging: Disable
Trunking Mode VLANs Enabled: All
Protected Port: False
show interfaces switchport
Use this command to display the Switchport configuration for a selected mode per interface. If the
interface is not specified, the configuration for all interfaces is displayed.
Format show interfaces switchport {access | trunk | general} [unit/
slot/port]
Mode Privileged EXEC
(Extreme 220) # show interfaces switchport access 1/0/1
Intf PVID
--------- ----
1/0/1 1
(Extreme 220) # show interfaces switchport trunk 1/0/6
Intf PVID Allowed Vlans List
--------- ----- -------------------
1/0/6 1 All
(Extreme 220) # show interfaces switchport general 1/0/5
Intf PVID Ingress Acceptable Untagged Tagged Forbidden Dynamic
Filtering Frame Type Vlans Vlans Vlans Vlans
--------- ----- ---------- ---------- --------- --------- --------- ---------
1/0/5 1 Enabled Admit All 7 10-50,55 9,100-200 88,96
(Extreme 220) # show interfaces switchport general
Intf PVID Ingress Acceptable Untagged Tagged Forbidden Dynamic
Filtering Frame Type Vlans Vlans Vlans Vlans
--------- ----- ---------- ---------- --------- --------- --------- ---------
1/0/1 1 Enabled Admit All 1,4-7 30-40,55 3,100-200 88,96
1/0/2 1 Disabled Admit All 1 30-40,55 none none
..
Voice VLAN Commands
This section describes the commands you use for Voice VLAN. Voice VLAN enables switch ports to
carry voice trac with defined priority so as to enable separation of voice and data trac coming onto
the port. The benefits of using Voice VLAN is to ensure that the sound quality of an IP phone could be
safeguarded from deteriorating when the data trac on the port is high.
Also the inherent isolation provided by VLANs ensures that inter-VLAN trac is under management
control and that network- attached clients cannot initiate a direct attack on voice components. QoS
(Quality of Service)-based on IEEE 802.1P CoS (Class of Service) uses classification and scheduling to
sent network trac from the switch in a predictable manner. The system uses the source MAC of the
trac traveling through the port to identify the IP phone data flow.
voice vlan (Global Config)
Use this command to enable the Voice VLAN capability on the switch.
Switching Commands
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