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To configure a WLAN interface or an interface group, use the client vlan command. To disable the WLAN interface, use the no form of this command.
client vlan interface-id-name-or-group-name
no client vlan
interface--id-name-or-group-name | Interface ID, name, or VLAN group name. |
The default interface is configured.
WLAN configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
You must disable the WLAN before using this command. See Related Commands section for more information on how to disable a WLAN.
This example shows how to enable a client VLAN on a WLAN:
Switch# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)# wlan wlan1 Switch(config-wlan)# client vlan client-vlan1 Switch(config-wlan)# end
This example shows how to disable a client association limit on a WLAN:
Switch# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)# wlan wlan1 Switch(config-wlan)# no client vlan Switch(config-wlan)# end
To clear the VLAN Trunking Protocol (VTP) and pruning counters, use the clear vtp counters command in privileged EXEC mode.
clear vtp counters
This command has no arguments or keywords.
None
Privileged EXEC
Release |
Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
This example shows how to clear the VTP counters:
Switch# clear vtp counters
You can verify that information was deleted by entering the show vtp counters privileged EXEC command.
Command |
Description |
Displays general information about VTP management domain, status, and counters. |
To enable debugging of the VLAN manager software, use the debug platform vlan command in privileged EXEC mode. To disable debugging, use the no form of this command.
debug platform vlan [ error | event ] [ switch switch-number ]
no debug platform vlan [ error | event ] [ switch switch-number ]
error |
(Optional) Displays VLAN error debug messages. |
event |
(Optional) Displays VLAN platform event debug messages. |
switch switch-number |
(Optional) Specifies the stack member number on which to enable debugging of the VLAN manager software. This keyword is supported only on stacking-capable switches. |
Debugging is disabled.
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
The undebug platform vlan command is the same as the no debug platform vlan command.
This example shows how to display VLAN error debug messages:
Switch# debug platform vlan error
To enable debugging of VLAN manager activities, use the debug sw-vlan command in privileged EXEC mode. To disable debugging, use the no form of this command.
debug sw-vlan { badpmcookies | cfg-vlan { bootup | cli } | events | ifs | management | mapping | notification | packets | redundancy | registries | vtp }
no debug sw-vlan { badpmcookies | cfg-vlan { bootup | cli } | events | ifs | management | mapping | notification | packets | redundancy | registries | vtp }
badpmcookies |
Displays debug messages for VLAN manager incidents of bad port manager cookies. |
cfg-vlan |
Displays VLAN configuration debug messages. |
bootup |
Displays messages when the switch is booting up. |
cli |
Displays messages when the command-line interface (CLI) is in VLAN configuration mode. |
events |
Displays debug messages for VLAN manager events. |
ifs |
Displays debug messages for the VLAN manager IOS file system (IFS). See debug sw-vlan ifs for more information. |
management |
Displays debug messages for VLAN manager management of internal VLANs. |
mapping |
Displays debug messages for VLAN mapping. |
notification |
Displays debug messages for VLAN manager notifications. See debug sw-vlan notification for more information. |
packets |
Displays debug messages for packet handling and encapsulation processes. |
redundancy |
Displays debug messages for VTP VLAN redundancy. |
registries |
Displays debug messages for VLAN manager registries. |
vtp |
Displays debug messages for the VLAN Trunking Protocol (VTP) code. See debug sw-vlan vtp for more information. |
Debugging is disabled.
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
The undebug sw-vlan command is the same as the no debug sw-vlan command.
When you enable debugging on a switch stack, it is enabled only on the active switch. To debug a specific stack member, you can start a CLI session from the active switch by using the session switch stack-member-number privileged EXEC command.
This example shows how to display debug messages for VLAN manager events:
Switch# debug sw-vlan events
Command |
Description |
Enables debugging of the VLAN manager IOS file system (IFS) error tests. |
|
Enables debugging of VLAN manager notifications. |
|
Enables debugging of the VTP code. |
|
Displays the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) in the administrative domain. |
|
Displays general information about VTP management domain, status, and counters. |
To enable debugging of the VLAN manager IOS file system (IFS) error tests, use the debug sw-vlan ifs command in privileged EXEC mode. To disable debugging, use the no form of this command.
debug sw-vlan ifs { open { read | write } | read { 1 | 2 | 3 | 4 } | write }
no debug sw-vlan ifs { open { read | write } | read { 1 | 2 | 3 | 4 } | write }
open read |
Displays VLAN manager IFS file-read operation debug messages. |
open write |
Displays VLAN manager IFS file-write operation debug messages. |
read |
Displays file-read operation debug messages for the specified error test (1, 2, 3, or 4). |
write |
Displays file-write operation debug messages. |
Debugging is disabled.
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
The undebug sw-vlan ifs command is the same as the no debug sw-vlan ifs command.
When selecting the file read operation, Operation 1 reads the file header, which contains the header verification word and the file version number. Operation 2 reads the main body of the file, which contains most of the domain and VLAN information. Operation 3 reads type length version (TLV) descriptor structures. Operation 4 reads TLV data.
When you enable debugging on a switch stack, it is enabled only on the active switch. To debug a specific stack member, you can start a CLI session from the active switch by using the session switch stack-member-number privileged EXEC command.
This example shows how to display file-write operation debug messages:
Switch# debug sw-vlan ifs write
Command |
Description |
Displays the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) in the administrative domain. |
To enable debugging of VLAN manager notifications, use the debug sw-vlan notification command in privileged EXEC mode. To disable debugging, use the no form of this command.
debug sw-vlan notification { accfwdchange | allowedvlancfgchange | fwdchange | linkchange | modechange | pruningcfgchange | statechange }
no debug sw-vlan notification { accfwdchange | allowedvlancfgchange | fwdchange | linkchange | modechange | pruningcfgchange | statechange }
accfwdchange |
Displays debug messages for VLAN manager notification of aggregated access interface spanning-tree forward changes. |
allowedvlancfgchange |
Displays debug messages for VLAN manager notification of changes to the allowed VLAN configuration. |
fwdchange |
Displays debug messages for VLAN manager notification of spanning-tree forwarding changes. |
linkchange |
Displays debug messages for VLAN manager notification of interface link-state changes. |
modechange |
Displays debug messages for VLAN manager notification of interface mode changes. |
pruningcfgchange |
Displays debug messages for VLAN manager notification of changes to the pruning configuration. |
statechange |
Displays debug messages for VLAN manager notification of interface state changes. |
Debugging is disabled.
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
The undebug sw-vlan notification command is the same as the no debug sw-vlan notification command.
When you enable debugging on a switch stack, it is enabled only on the active switch. To debug a specific stack member, you can start a CLI session from the active switch by using the session switch stack-member-number privileged EXEC command.
This example shows how to display debug messages for VLAN manager notification of interface mode changes:
Switch# debug sw-vlan notification
Command |
Description |
Displays the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) in the administrative domain. |
To enable debugging of the VLAN Trunking Protocol (VTP) code, use the debug sw-vlan vtp command in privileged EXEC mode. To disable debugging, use the no form of this command.
debug sw-vlan vtp { events | packets | pruning [ packets | xmit ] | redundancy | xmit }
no debug sw-vlan vtp { events | packets | pruning | redundancy | xmit }
events |
Displays debug messages for general-purpose logic flow and detailed VTP messages generated by the VTP_LOG_RUNTIME macro in the VTP code. |
packets |
Displays debug messages for the contents of all incoming VTP packets that have been passed into the VTP code from the Cisco IOS VTP platform-dependent layer, except for pruning packets. |
pruning |
Displays debug messages generated by the pruning segment of the VTP code. |
packets |
(Optional) Displays debug messages for the contents of all incoming VTP pruning packets that have been passed into the VTP code from the Cisco IOS VTP platform-dependent layer. |
xmit |
(Optional) Displays debug messages for the contents of all outgoing VTP packets that the VTP code requests the Cisco IOS VTP platform-dependent layer to send. |
redundancy |
Displays debug messages for VTP redundancy. |
xmit |
Displays debug messages for the contents of all outgoing VTP packets that the VTP code requests the Cisco IOS VTP platform-dependent layer to send, except for pruning packets. |
Debugging is disabled.
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
The undebug sw-vlan vtp command is the same as the no debug sw-vlan vtp command.
If no additional parameters are entered after the pruning keyword, VTP pruning debugging messages appear. They are generated by the VTP_PRUNING_LOG_NOTICE, VTP_PRUNING_LOG_INFO, VTP_PRUNING_LOG_DEBUG, VTP_PRUNING_LOG_ALERT, and VTP_PRUNING_LOG_WARNING macros in the VTP pruning code.
When you enable debugging on a switch stack, it is enabled only on the active switch. To debug a specific stack member, you can start a CLI session from the active switch by using the session switch stack-member-number privileged EXEC command.
This example shows how to display debug messages for VTP redundancy:
Switch# debug sw-vlan vtp redundancy
Command |
Description |
Displays general information about VTP management domain, status, and counters. |
To create or access a dynamic switch virtual interface (SVI) and to enter interface configuration mode, use the interface vlan command in global configuration mode. To delete an SVI, use the no form of this command.
interface vlan vlan-id
no interface vlan vlan-id
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
SVIs are created the first time you enter the interface vlan vlan-id command for a particular VLAN. The vlan-id corresponds to the VLAN-tag associated with data frames on an IEEE 802.1Q encapsulated trunk or the VLAN ID configured for an access port.
![]() Note |
When you create an SVI, it does not become active until it is associated with a physical port. |
If you delete an SVI using the no interface vlan vlan-id command, it is no longer visible in the output from the show interfaces privileged EXEC command.
![]() Note |
You cannot delete the VLAN 1 interface. |
You can reinstate a deleted SVI by entering the interface vlan vlan-id command for the deleted interface. The interface comes back up, but the previous configuration is gone.
The interrelationship between the number of SVIs configured on a switch or a switch stack and the number of other features being configured might have an impact on CPU utilization due to hardware limitations. You can use the sdm prefer global configuration command to reallocate system hardware resources based on templates and feature tables.
You can verify your setting by entering the show interfaces and show interfaces vlan vlan-id privileged EXEC commands.
This example shows how to create a new SVI with VLAN ID 23 and enter interface configuration mode:
Switch(config)# interface vlan 23 Switch(config-if)#
Command |
Description |
show interfaces |
Displays the administrative and operational status of all interfaces or a specified interface. |
To display platform-dependent VLAN information, use the show platform vlan privileged EXEC command.
show platform vlan [ vlan-id ] [ switch switch-number ]
vlan-id |
(Optional) ID of the VLAN. The range is 1 to 4094. |
switch switch-number |
(Optional) Limits the display to VLANs on the specified stack member. |
None
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
Use this command only when you are working directly with your technical support representative while troubleshooting a problem. Do not use this command unless your technical support representative asks you to do so.
This example shows how to display platform-dependent VLAN information:
Switch# show platform vlan
To display the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) on the switch, use the show vlan command in user EXEC mode.
show vlan [ brief | dot1q tag native | group | id vlan-id | mtu | name vlan-name | remote-span | summary ]
brief | (Optional) Displays one line for each VLAN with the VLAN name, status, and its ports. |
dot1q tag native | (Optional) Displays the IEEE 802.1Q native VLAN tagging status. |
group | (Optional) Displays information about VLAN groups. |
id vlan-id | (Optional) Displays information about a single VLAN identified by the VLAN ID number. For vlan-id, the range is 1 to 4094. |
mtu | (Optional) Displays a list of VLANs and the minimum and maximum transmission unit (MTU) sizes configured on ports in the VLAN. |
name vlan-name | (Optional) Displays information about a single VLAN identified by the VLAN name. The VLAN name is an ASCII string from 1 to 32 characters. |
remote-span | (Optional) Displays information about Remote SPAN (RSPAN) VLANs. |
summary | (Optional) Displays VLAN summary information. |
![]() Note |
The ifindex keyword is not supported, even though it is visible in the command-line help string. |
None
User EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
In the show vlan mtu command output, the MTU_Mismatch column shows whether all the ports in the VLAN have the same MTU. When yes appears in the column, it means that the VLAN has ports with different MTUs, and packets that are switched from a port with a larger MTU to a port with a smaller MTU might be dropped. If the VLAN does not have an SVI, the hyphen (-) symbol appears in the SVI_MTU column. If the MTU-Mismatch column displays yes, the names of the ports with the MinMTU and the MaxMTU appear.
This is an example of output from the show vlan command. See the table that follows for descriptions of the fields in the display.
Switch> show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/2, Gi1/0/3, Gi1/0/4
Gi1/0/5, Gi1/0/6, Gi1/0/7
Gi1/0/8, Gi1/0/9, Gi1/0/10
Gi1/0/11, Gi1/0/12, Gi1/0/13
Gi1/0/14, Gi1/0/15, Gi1/0/16
Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22
Gi1/0/23, Gi1/0/24, Gi1/0/25
Gi1/0/26, Gi1/0/27, Gi1/0/28
Gi1/0/29, Gi1/0/30, Gi1/0/31
Gi1/0/32, Gi1/0/33, Gi1/0/34
Gi1/0/35, Gi1/0/36, Gi1/0/37
Gi1/0/38, Gi1/0/39, Gi1/0/40
Gi1/0/41, Gi1/0/42, Gi1/0/43
Gi1/0/44, Gi1/0/45, Gi1/0/46
Gi1/0/47, Gi1/0/48
2 VLAN0002 active
40 vlan-40 active
300 VLAN0300 active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
2 enet 100002 1500 - - - - - 0 0
40 enet 100040 1500 - - - - - 0 0
300 enet 100300 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0
2000 enet 102000 1500 - - - - - 0 0
3000 enet 103000 1500 - - - - - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
2000,3000
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
Field |
Description |
---|---|
VLAN |
VLAN number. |
Name |
Name, if configured, of the VLAN. |
Status |
Status of the VLAN (active or suspend). |
Ports |
Ports that belong to the VLAN. |
Type |
Media type of the VLAN. |
SAID |
Security association ID value for the VLAN. |
MTU |
Maximum transmission unit size for the VLAN. |
Parent |
Parent VLAN, if one exists. |
RingNo |
Ring number for the VLAN, if applicable. |
BrdgNo |
Bridge number for the VLAN, if applicable. |
Stp |
Spanning Tree Protocol type used on the VLAN. |
BrdgMode |
Bridging mode for this VLAN—possible values are source-route bridging (SRB) and source-route transparent (SRT); the default is SRB. |
Trans1 |
Translation bridge 1. |
Trans2 |
Translation bridge 2. |
Remote SPAN VLANs |
Identifies any RSPAN VLANs that have been configured. |
This is an example of output from the show vlan dot1q tag native command:
Switch> show vlan dot1q tag native
dot1q native vlan tagging is disabled
This is an example of output from the show vlan summary command:
Switch> show vlan summary
Number of existing VLANs : 45
Number of existing VTP VLANs : 45
Number of existing extended VLANS : 0
This is an example of output from the show vlan id command:
Switch# show vlan id 2
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
2 VLAN0200 active Gi1/0/7, Gi1/0/8
2 VLAN0200 active Gi2/0/1, Gi2/0/2
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
2 enet 100002 1500 - - - - - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
Disabled
Command |
Description |
switchport mode |
Configures the VLAN membership mode of a port. |
Adds a VLAN and enters the VLAN configuration mode. |
To display general information about the VLAN Trunking Protocol (VTP) management domain, status, and counters, use the show vtp command in EXEC mode.
show vtp { counters | devices [ conflicts ] | interface [ interface-id ] | password | status }
counters | Displays the VTP statistics for the switch. |
devices | Displays information about all VTP version 3 devices in the domain. This keyword applies only if the switch is not running VTP version 3. |
conflicts | (Optional) Displays information about VTP version 3 devices that have conflicting primary servers. This command is ignored when the switch is in VTP transparent or VTP off mode. |
interface | Displays VTP status and configuration for all interfaces or the specified interface. |
interface-id | (Optional) Interface for which to display VTP status and configuration. This can be a physical interface or a port channel. |
password | Displays the configured VTP password (available in privileged EXEC mode only). |
status | Displays general information about the VTP management domain status. |
None
User EXEC
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
When you enter the show vtp password command when the switch is running VTP version 3, the display follows these rules:
This is an example of output from the show vtp devices command. A Yes in the Conflict column indicates that the responding server is in conflict with the local server for the feature; that is, when two switches in the same domain do not have the same primary server for a database.
Switch# show vtp devices Retrieving information from the VTP domain. Waiting for 5 seconds. VTP Database Conf switch ID Primary Server Revision System Name lict ------------ ---- -------------- -------------- ---------- ---------------------- VLAN Yes 00b0.8e50.d000 000c.0412.6300 12354 main.cisco.com MST No 00b0.8e50.d000 0004.AB45.6000 24 main.cisco.com VLAN Yes 000c.0412.6300=000c.0412.6300 67 qwerty.cisco.com
This is an example of output from the show vtp counters command. The table that follows describes each field in the display.
Switch> show vtp counters
VTP statistics:
Summary advertisements received : 0
Subset advertisements received : 0
Request advertisements received : 0
Summary advertisements transmitted : 0
Subset advertisements transmitted : 0
Request advertisements transmitted : 0
Number of config revision errors : 0
Number of config digest errors : 0
Number of V1 summary errors : 0
VTP pruning statistics:
Trunk Join Transmitted Join Received Summary advts received from
non-pruning-capable device
---------------- ---------------- ---------------- ---------------------------
Gi1/0/47 0 0 0
Gi1/0/48 0 0 0
Gi2/0/1 0 0 0
Gi3/0/2 0 0 0
Field |
Description |
---|---|
Summary advertisements received |
Number of summary advertisements received by this switch on its trunk ports. Summary advertisements contain the management domain name, the configuration revision number, the update timestamp and identity, the authentication checksum, and the number of subset advertisements to follow. |
Subset advertisements received |
Number of subset advertisements received by this switch on its trunk ports. Subset advertisements contain all the information for one or more VLANs. |
Request advertisements received |
Number of advertisement requests received by this switch on its trunk ports. Advertisement requests normally request information on all VLANs. They can also request information on a subset of VLANs. |
Summary advertisements transmitted |
Number of summary advertisements sent by this switch on its trunk ports. Summary advertisements contain the management domain name, the configuration revision number, the update timestamp and identity, the authentication checksum, and the number of subset advertisements to follow. |
Subset advertisements transmitted |
Number of subset advertisements sent by this switch on its trunk ports. Subset advertisements contain all the information for one or more VLANs. |
Request advertisements transmitted |
Number of advertisement requests sent by this switch on its trunk ports. Advertisement requests normally request information on all VLANs. They can also request information on a subset of VLANs. |
Number of configuration revision errors |
Number of revision errors. Whenever you define a new VLAN, delete an existing one, suspend or resume an existing VLAN, or modify the parameters on an existing VLAN, the configuration revision number of the switch increments. Revision errors increment whenever the switch receives an advertisement whose revision number matches the revision number of the switch, but the MD5 digest values do not match. This error means that the VTP password in the two switches is different or that the switches have different configurations. These errors indicate that the switch is filtering incoming advertisements, which causes the VTP database to become unsynchronized across the network. |
Number of configuration digest errors |
Number of MD5 digest errors. Digest errors increment whenever the MD5 digest in the summary packet and the MD5 digest of the received advertisement calculated by the switch do not match. This error usually means that the VTP password in the two switches is different. To solve this problem, make sure the VTP password on all switches is the same. These errors indicate that the switch is filtering incoming advertisements, which causes the VTP database to become unsynchronized across the network. |
Number of V1 summary errors |
Number of Version 1 errors. Version 1 summary errors increment whenever a switch in VTP V2 mode receives a VTP Version 1 frame. These errors indicate that at least one neighboring switch is either running VTP Version 1 or VTP Version 2 with V2-mode disabled. To solve this problem, change the configuration of the switches in VTP V2-mode to disabled. |
Join Transmitted |
Number of VTP pruning messages sent on the trunk. |
Join Received |
Number of VTP pruning messages received on the trunk. |
Summary Advts Received from non-pruning-capable device |
Number of VTP summary messages received on the trunk from devices that do not support pruning. |
This is an example of output from the show vtp status command. The table that follows describes each field in the display.
Switch> show vtp status
VTP Version capable : 1 to 3
VTP version running : 1
VTP Domain Name :
VTP Pruning Mode : Disabled
VTP Traps Generation : Disabled
Device ID : 2037.06ce.3580
Configuration last modified by 192.168.1.1 at 10-10-12 04:34:02
Local updater ID is 192.168.1.1 on interface LIIN0 (first layer3 interface found
)
Feature VLAN:
--------------
VTP Operating Mode : Server
Maximum VLANs supported locally : 1005
Number of existing VLANs : 7
Configuration Revision : 2
MD5 digest : 0xA0 0xA1 0xFE 0x4E 0x7E 0x5D 0x97 0x41
0x89 0xB9 0x9B 0x70 0x03 0x61 0xE9 0x27
Field |
Description |
||
---|---|---|---|
VTP Version capable |
Displays the VTP versions that are capable of operating on the switch. |
||
VTP Version running |
Displays the VTP version operating on the switch. By default, the switch implements Version 1 but can be set to Version 2. |
||
VTP Domain Name |
Name that identifies the administrative domain for the switch. |
||
VTP Pruning Mode |
Displays whether pruning is enabled or disabled. Enabling pruning on a VTP server enables pruning for the entire management domain. Pruning restricts flooded traffic to those trunk links that the traffic must use to access the appropriate network devices. |
||
VTP Traps Generation |
Displays whether VTP traps are sent to a network management station. |
||
Device ID |
Displays the MAC address of the local device. |
||
Configuration last modified |
Displays the date and time of the last configuration modification. Displays the IP address of the switch that caused the configuration change to the database. |
||
VTP Operating Mode |
Displays the VTP operating mode, which can be server, client, or transparent. Server—A switch in VTP server mode is enabled for VTP and sends advertisements. You can configure VLANs on it. The switch guarantees that it can recover all the VLAN information in the current VTP database from NVRAM after reboot. By default, every switch is a VTP server.
Client—A switch in VTP client mode is enabled for VTP, can send advertisements, but does not have enough nonvolatile storage to store VLAN configurations. You cannot configure VLANs on it. When a VTP client starts up, it does not send VTP advertisements until it receives advertisements to initialize its VLAN database. Transparent—A switch in VTP transparent mode is disabled for VTP, does not send or learn from advertisements sent by other devices, and cannot affect VLAN configurations on other devices in the network. The switch receives VTP advertisements and forwards them on all trunk ports except the one on which the advertisement was received. |
||
Maximum VLANs Supported Locally |
Maximum number of VLANs supported locally. |
||
Number of Existing VLANs |
Number of existing VLANs. |
||
Configuration Revision |
Current configuration revision number on this switch. |
||
MD5 Digest |
A 16-byte checksum of the VTP configuration. |
This is an example of output from the show vtp status command for a switch running VTP version 3:
Switch> show vtp status
VTP Version capable : 1 to 3
VTP version running : 3
VTP Domain Name : Cisco
VTP Pruning Mode : Disabled
VTP Traps Generation : Disabled
Device ID : 0021.1bcd.c700
Feature VLAN:
--------------
VTP Operating Mode : Server
Number of existing VLANs : 7
Number of existing extended VLANs : 0
Configuration Revision : 0
Primary ID : 0000.0000.0000
Primary Description :
MD5 digest : 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Feature MST:
--------------
VTP Operating Mode : Client
Configuration Revision : 0
Primary ID : 0000.0000.0000
Primary Description :
MD5 digest : 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Feature UNKNOWN:
----------------
Command |
Description |
Clears the VLAN Trunking Protocol (VTP) and pruning counters. |
To display the detailed list of VLANs in a VLAN group and the status of the DHCP failed vlans, use the show wireless vlan group command in privileged EXEC mode.
show wireless vlan group group-name
group-name | Name of the wireless VLAN group. |
None
Privileged EXEC
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
Enter this command in the global configuration mode only.
This example shows how to display the summary of a VLAN group:
Switch# show wireless vlan group grp1
Member Vlans Configured
-----------------------------------------------------------
VLAN VLAN Name DHCP Failed
100 VLAN0100 No
101 VLAN0101 Yes
102 VLAN0102 No
103 VLAN0103 No
104 VLAN0104 Yes
105 VLAN0105 No
To set a port priority for the incoming untagged frames or the priority of frames received by the IP phone connected to the specified port, use the switchport priority extend command in interface configuration mode. To return to the default setting, use the no form of this command.
switchport priority extend { cos value | trust }
no switchport priority extend
cos value |
Sets the IP phone port to override the IEEE 802.1p priority received from the PC or the attached device with the specified class of service (CoS) value. The range is 0 to 7. Seven is the highest priority. The default is 0. |
trust |
Sets the IP phone port to trust the IEEE 802.1p priority received from the PC or the attached device. |
The default port priority is set to a CoS value of 0 for untagged frames received on the port.
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
When voice VLAN is enabled, you can configure the switch to send the Cisco Discovery Protocol (CDP) packets to instruct the IP phone how to send data packets from the device attached to the access port on the Cisco IP Phone. You must enable CDP on the switch port connected to the Cisco IP Phone to send the configuration to the Cisco IP Phone. (CDP is enabled by default globally and on all switch interfaces.)
You should configure voice VLAN on switch access ports. You can configure a voice VLAN only on Layer 2 ports.
Before you enable voice VLAN, we recommend that you enable quality of service (QoS) on the interface by entering the trust device cisco-phone interface configuration command. If you use the auto QoS feature, these settings are automatically configured.
This example shows how to configure the IP phone connected to the specified port to trust the received IEEE 802.1p priority:
Switch(config)# interface gigabitethernet1/0/2 Switch(config-if)# switchport priority extend trust
You can verify your settings by entering the show interfaces interface-id switchport privileged EXEC command.
To set the trunk characteristics when the interface is in trunking mode, use the switchport trunk command in interface configuration mode. To reset a trunking characteristic to the default, use the no form of this command.
switchport trunk { allowed vlan vlan-list | native vlan vlan-id | pruning vlan vlan-list }
no switchport trunk { allowed vlan | native vlan | pruning vlan }
allowed vlan vlan-list | Sets the list of allowed VLANs that can receive and send traffic on this interface in tagged format when in trunking mode. See the Usage Guidelines for the vlan-list choices. |
native vlan vlan-id | Sets the native VLAN for sending and receiving untagged traffic when the interface is in IEEE 802.1Q trunking mode. The range is 1 to 4094. |
pruning vlan vlan-list | Sets the list of VLANs that are eligible for VTP pruning when in trunking mode. See the Usage Guidelines for the vlan-list choices. |
VLAN 1 is the default native VLAN ID on the port.
The default for all VLAN lists is to include all VLANs.
Interface configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
The vlan-list format is all | none | [add | remove | except] vlan-atom ,vlan-atom...:
![]() Note |
You can add extended-range VLANs to the allowed VLAN list, but not to the pruning-eligible VLAN list. |
![]() Note |
You can remove extended-range VLANs from the allowed VLAN list, but you cannot remove them from the pruning-eligible list. |
Native VLANs:
Allowed VLAN:
Trunk pruning:
This example shows how to configure VLAN 3 as the default for the port to send all untagged traffic:
Switch(config)# interface gigabitethernet1/0/2 Switch(config-if)# switchport trunk native vlan 3
This example shows how to add VLANs 1, 2, 5, and 6 to the allowed list:
Switch(config)# interface gigabitethernet1/0/2 Switch(config-if)# switchport trunk allowed vlan add 1,2,5,6
This example shows how to remove VLANs 3 and 10 to 15 from the pruning-eligible list:
Switch(config)# interface gigabitethernet1/0/2 Switch(config-if)# switchport trunk pruning vlan remove 3,10-15
You can verify your settings by entering the show interfaces interface-id switchport privileged EXEC command.
Command |
Description |
show interfaces |
Displays the administrative and operational status of all interfaces or a specified interface. |
switchport mode |
Configures the VLAN membership mode of a port. |
To configure voice VLAN on the port, use the switchport voice vlan command in interface configuration mode. To return to the default setting, use the no form of this command.
switchport voice vlan { vlan-id | dot1p | none | untagged }
no switchport voice vlan
vlan-id | The VLAN to be used for voice traffic. The range is 1 to 4094. By default, the IP phone forwards the voice traffic with an IEEE 802.1Q priority of 5. |
dot1p | Configures the telephone to use IEEE 802.1p priority tagging and uses VLAN 0 (the native VLAN). By default, the Cisco IP phone forwards the voice traffic with an IEEE 802.1p priority of 5. |
none | Does not instruct the IP telephone about the voice VLAN. The telephone uses the configuration from the telephone key pad. |
untagged | Configures the telephone to send untagged voice traffic. This is the default for the telephone. |
The default is not to automatically configure the telephone (none).
The telephone default is not to tag frames.
Interface configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
You should configure voice VLAN on Layer 2 access ports.
You must enable Cisco Discovery Protocol (CDP) on the switch port connected to the Cisco IP phone for the switch to send configuration information to the phone. CDP is enabled by default globally and on the interface.
Before you enable voice VLAN, we recommend that you enable quality of service (QoS) on the interface by entering the trust device cisco-phone interface configuration command. If you use the auto QoS feature, these settings are automatically configured.
When you enter a VLAN ID, the IP phone forwards voice traffic in IEEE 802.1Q frames, tagged with the specified VLAN ID. The switch puts IEEE 802.1Q voice traffic in the voice VLAN.
When you select dot1p, none, or untagged, the switch puts the indicated voice traffic in the access VLAN.
In all configurations, the voice traffic carries a Layer 2 IP precedence value. The default is 5 for voice traffic.
When you enable port security on an interface that is also configured with a voice VLAN, set the maximum allowed secure addresses on the port to 2. When the port is connected to a Cisco IP phone, the IP phone requires one MAC address. The Cisco IP phone address is learned on the voice VLAN, but not on the access VLAN. If you connect a single PC to the Cisco IP phone, no additional MAC addresses are required. If you connect more than one PC to the Cisco IP phone, you must configure enough secure addresses to allow one for each PC and one for the Cisco IP phone.
If any type of port security is enabled on the access VLAN, dynamic port security is automatically enabled on the voice VLAN.
You cannot configure static secure MAC addresses in the voice VLAN.
The Port Fast feature is automatically enabled when voice VLAN is configured. When you disable voice VLAN, the Port Fast feature is not automatically disabled.
This example shows how to configure VLAN 2 as the voice VLAN for the port:
Switch(config)# interface gigabitethernet1/0/2 Switch(config-if)# switchport voice vlan 2
You can verify your settings by entering the show interfaces interface-id switchport privileged EXEC command.
Command |
Description |
show interfaces |
Displays the administrative and operational status of all interfaces or a specified interface. |
Sets a port priority for the incoming untagged frames or the priority of frames received by the IP phone connected to the specified port. |
To add a VLAN and to enter the VLAN configuration mode, use the vlan command in global configuration mode. To delete the VLAN, use the no form of this command.
vlan vlan-id
no vlan vlan-id
vlan-id | ID of the VLAN to be added and configured. The range is 1 to 4094. You can enter a single VLAN ID, a series of VLAN IDs separated by commas, or a range of VLAN IDs separated by hyphens. |
group word vlan-list | Enables creation of the VLAN group. The VLAN group name may contain up to 32 characters and must commence with a letter. |
None
Global configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
You can use the vlan vlan-id global configuration command to add normal-range VLANs (VLAN IDs 1 to 1005) or extended-range VLANs (VLAN IDs 1006 to 4094). Configuration information for normal-range VLANs is always saved in the VLAN database, and you can display this information by entering the show vlan privileged EXEC command. If the VTP mode is transparent, VLAN configuration information for normal-range VLANs is also saved in the switch running configuration file. VLAN IDs in the extended range are not saved in the VLAN database, but they are stored in the switch running configuration file, and you can save the configuration in the startup configuration file.
VTP version 3 supports propagation of extended-range VLANs. VTP versions 1 and 2 propagate only VLANs 1 to 1005.
When you save the VLAN and VTP configurations in the startup configuration file and reboot the switch, the configuration is selected as follows:
If you enter an invalid VLAN ID, you receive an error message and do not enter VLAN configuration mode.
Entering the vlan command with a VLAN ID enables VLAN configuration mode. When you enter the VLAN ID of an existing VLAN, you do not create a new VLAN, but you can modify VLAN parameters for that VLAN. The specified VLANs are added or modified when you exit the VLAN configuration mode. Only the shutdown command (for VLANs 1 to 1005) takes effect immediately.
![]() Note |
Although all commands are visible, the only VLAN configuration command that is supported on extended-range VLANs is remote-span. For extended-range VLANs, all other characteristics must remain at the default state. |
These configuration commands are available in VLAN configuration mode. The no form of each command returns the characteristic to its default state:
![]() Note |
The switch supports only Ethernet ports. You configure only FDDI and Token Ring media-specific characteristics for VLAN Trunking Protocol (VTP) global advertisements to other switches. These VLANs are locally suspended. |
![]() Note |
The RSPAN feature is supported only on switches running the LAN Base image. |
Media Type |
Valid Syntax |
---|---|
Ethernet |
name vlan-name, media ethernet, state {suspend | active}, said said-value, remote-span, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id |
FDDI |
name vlan-name, media fddi, state {suspend | active}, said said-value, ring ring-number, parent parent-vlan-id, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id |
FDDI-NET |
name vlan-name, media fd-net , state {suspend | active}, said said-value, bridge bridge-number, stp type {ieee | ibm | auto}, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id If VTP v2 mode is disabled, do not set the stp type to auto. |
Token Ring |
VTP v1 mode is enabled. name vlan-name, media tokenring, state {suspend | active}, said said-value, ring ring-number, parent parent-vlan-id, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id |
Token Ring concentrator relay function (TrCRF) |
VTP v2 mode is enabled. name vlan-name, media tokenring, state {suspend | active}, said said-value, ring ring-number, parent parent-vlan-id, bridge type {srb | srt}, are are-number, ste ste-number, backupcrf {enable | disable}, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id |
Token Ring-NET |
VTP v1 mode is enabled. name vlan-name, media tr-net, state {suspend | active}, said said-value, bridge bridge-number, stp type {ieee | ibm}, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id |
Token Ring bridge relay function (TrBRF) |
VTP v2 mode is enabled. name vlan-name, media tr-net, state {suspend | active}, said said-value, bridge bridge-number, stp type {ieee | ibm | auto}, tb-vlan1 tb-vlan1-id, tb-vlan2 tb-vlan2-id |
The following table describes the rules for configuring VLANs:
Configuration |
Rule |
---|---|
VTP v2 mode is enabled, and you are configuring a TrCRF VLAN media type. |
Specify a parent VLAN ID of a TrBRF that already exists in the database. Specify a ring number. Do not leave this field blank. Specify unique ring numbers when TrCRF VLANs have the same parent VLAN ID. Only one backup concentrator relay function (CRF) can be enabled. |
VTP v2 mode is enabled, and you are configuring VLANs other than TrCRF media type. |
Do not specify a backup CRF. |
VTP v2 mode is enabled, and you are configuring a TrBRF VLAN media type. |
Specify a bridge number. Do not leave this field blank. |
VTP v1 mode is enabled. |
No VLAN can have an STP type set to auto. This rule applies to Ethernet, FDDI, FDDI-NET, Token Ring, and Token Ring-NET VLANs. |
Add a VLAN that requires translational bridging (values are not set to zero). |
The translational bridging VLAN IDs that are used must already exist in the database. The translational bridging VLAN IDs that a configuration points to must also contain a pointer to the original VLAN in one of the translational bridging parameters (for example, Ethernet points to FDDI, and FDDI points to Ethernet). The translational bridging VLAN IDs that a configuration points to must be different media types than the original VLAN (for example, Ethernet can point to Token Ring). If both translational bridging VLAN IDs are configured, these VLANs must be different media types (for example, Ethernet can point to FDDI and Token Ring). |
This example shows how to add an Ethernet VLAN with default media characteristics. The default includes a vlan-name of VLAN xxxx, where xxxx represents four numeric digits (including leading zeros) equal to the VLAN ID number. The default media is ethernet; the state is active. The default said-value is 100000 plus the VLAN ID; the mtu-size variable is 1500; the stp-type is ieee. When you enter the exit VLAN configuration command, the VLAN is added if it did not already exist; otherwise, this command does nothing.
This example shows how to create a new VLAN with all default characteristics and enter VLAN configuration mode:
Switch(config)# vlan 200 Switch(config-vlan)# exit Switch(config)#
This example shows how to create a new extended-range VLAN with all the default characteristics, to enter VLAN configuration mode, and to save the new VLAN in the switch startup configuration file:
Switch(config)# vlan 2000 Switch(config-vlan)# end Switch# copy running-config startup config
This example shows how to create a VLAN group.
Switch(config)# vlan group xyz vlan-list 50-60
This example shows how to remove a VLAN group.
Switch(config)# no vlan group xyz vlan-list 50-60
This example shows how to remove a single VLAN from the VLAN group.
Switch(config)# no vlan group xyz vlan-list 51
This example shows how to remove multiple VLANs from the VLAN group.
Switch(config)# no vlan group xyz vlan-list 52-55
This example shows how to remove both single and multiple VLANs from the VLAN group.
Switch(config)# no vlan group xyz vlan-list 56, 58-60
You can verify your setting by entering the show vlan privileged EXEC command.
Command |
Description |
Displays the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) in the administrative domain. |
To enable tagging of native VLAN frames on all IEEE 802.1Q trunk ports, use the vlan dot1q tag native command in global configuration mode. To return to the default setting, use the no form of this command.
vlan dot1q tag native
no vlan dot1q tag native
![]() Note |
This command is not supported on switches running the LAN Base image. |
This command has no arguments or keywords.
The IEEE 802.1Q native VLAN tagging is disabled.
Global configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
When enabled, native VLAN packets going out of all IEEE 802.1Q trunk ports are tagged.
When disabled, native VLAN packets going out of all IEEE 802.1Q trunk ports are not tagged.
For more information about IEEE 802.1Q tunneling, see the software configuration guide for this release.
This example shows how to enable IEEE 802.1Q tagging on native VLAN frames:
Switch# configure terminal Switch (config)# vlan dot1q tag native Switch (config)# end
You can verify your settings by entering the show vlan dot1q tag native privileged EXEC command.
Command |
Description |
Displays the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) in the administrative domain. |
To set or modify the VLAN Trunking Protocol (VTP) configuration characteristics, use the vtp command in global configuration mode. To remove the settings or to return to the default settings, use the no form of this command.
vtp { domain domain-name | file filename | interface interface-name [ only ] | mode { client | off | server | transparent } [ mst | unknown | vlan ] | password password [ hidden | secret ] | pruning | version number }
no vtp { file | interface | mode [ client | off | server | transparent ] [ mst | unknown | vlan ] | password | pruning | version }
domain domain-name | Specifies the VTP domain name, an ASCII string from 1 to 32 characters that identifies the VTP administrative domain for the switch. The domain name is case sensitive. |
file filename | Specifies the Cisco IOS file system file where the VTP VLAN configuration is stored. |
interface interface-name | Specifies the name of the interface providing the VTP ID updated for this device. |
only | (Optional) Uses only the IP address of this interface as the VTP IP updater. |
mode | Specifies the VTP device mode as client, server, or transparent. |
client | Places the switch in VTP client mode. A switch in VTP client mode is enabled for VTP, and can send advertisements, but does not have enough nonvolatile storage to store VLAN configurations. You cannot configure VLANs on a VTP client. VLANs are configured on another switch in the domain that is in server mode. When a VTP client starts up, it does not send VTP advertisements until it receives advertisements to initialize its VLAN database. |
off | Places the switch in VTP off mode. A switch in VTP off mode functions the same as a VTP transparent device except that it does not forward VTP advertisements on trunk ports. |
server | Places the switch in VTP server mode. A switch in VTP server mode is enabled for VTP and sends advertisements. You can configure VLANs on the switch. The switch can recover all the VLAN information in the current VTP database from nonvolatile storage after reboot. |
transparent | Places the switch in VTP transparent mode. A switch in VTP transparent mode is disabled for VTP, does not send advertisements or learn from advertisements sent by other devices, and cannot affect VLAN configurations on other devices in the network. The switch receives VTP advertisements and forwards them on all trunk ports except the one on which the advertisement was received. When VTP mode is transparent, the mode and domain name are saved in the switch running configuration file, and you can save them in the switch startup configuration file by entering the copy running-config startup config privileged EXEC command. |
mst | (Optional) Sets the mode for the multiple spanning tree (MST) VTP database (only VTP Version 3). |
unknown | (Optional) Sets the mode for unknown VTP databases (only VTP Version 3). |
vlan | (Optional) Sets the mode for VLAN VTP databases. This is the default (only VTP Version 3). |
password password | Sets the administrative domain password for the generation of the 16-byte secret value used in MD5 digest calculation to be sent in VTP advertisements and to validate received VTP advertisements. The password can be an ASCII string from 1 to 32 characters. The password is case sensitive. |
hidden | (Optional) Specifies that the key generated from the password string is saved in the VLAN database file. When the hidden keyword is not specified, the password string is saved in clear text. When the hidden password is entered, you need to reenter the password to issue a command in the domain. This keyword is supported only in VTP Version 3. |
secret | (Optional) Allows the user to directly configure the password secret key (only VTP Version 3). |
pruning | Enables VTP pruning on the switch. |
version number | Sets the VTP Version to Version 1, Version 2, or Version 3. |
The default filename is flash:vlan.dat.
The default mode is server mode and the default database is VLAN.
In VTP Version 3, for the MST database, the default mode is transparent.
No domain name or password is defined.
No password is configured.
Pruning is disabled.
The default version is Version 1.
Global configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
When you save VTP mode, domain name, and VLAN configurations in the switch startup configuration file and reboot the switch, the VTP and VLAN configurations are selected by these conditions:
The vtp file filename cannot be used to load a new database; it renames only the file in which the existing database is stored.
Follow these guidelines when configuring a VTP domain name:
Follow these guidelines when setting VTP mode:
Follow these guidelines when setting a VTP password:
Follow these guidelines when setting VTP pruning:
Follow these guidelines when setting the VTP version:
You cannot save password, pruning, and version configurations in the switch configuration file.
This example shows how to rename the filename for VTP configuration storage to vtpfilename:
Switch(config)# vtp file vtpfilename
This example shows how to clear the device storage filename:
Switch(config)# no vtp file vtpconfig
Clearing device storage filename.
This example shows how to specify the name of the interface providing the VTP updater ID for this device:
Switch(config)# vtp interface gigabitethernet
This example shows how to set the administrative domain for the switch:
Switch(config)# vtp domain OurDomainName
This example shows how to place the switch in VTP transparent mode:
Switch(config)# vtp mode transparent
This example shows how to configure the VTP domain password:
Switch(config)# vtp password ThisIsOurDomainsPassword
This example shows how to enable pruning in the VLAN database:
Switch(config)# vtp pruning
Pruning switched ON
This example shows how to enable Version 2 mode in the VLAN database:
Switch(config)# vtp version 2
You can verify your settings by entering the show vtp status privileged EXEC command.
Command |
Description |
Displays general information about VTP management domain, status, and counters. |
|
Enables or disables VTP on an interface. |
To enable the VLAN Trunking Protocol (VTP) on a per-port basis, use the vtp command in interface configuration mode. To disable VTP on the interface, use the no form of this command.
vtp
no vtp
This command has no arguments or keywords.
None
Interface configuration
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
Enter this command only on interfaces that are in trunking mode.
This command is supported only when the switch is running VTP Version 3.
This example shows how to enable VTP on an interface:
Switch(config-if)# vtp
This example shows how to disable VTP on an interface:
Switch(config-if)# no vtp
Command |
Description |
Configures the trunk characteristics when an interface is in trunking mode. |
|
Globally configures VTP domain name, password, pruning, version, and mode. |
To configure a switch as the VLAN Trunking Protocol (VTP) primary server, use the vtp primary command in privileged EXEC mode.
vtp primary [ mst | vlan ] [force]
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
A VTP primary server updates the database information and sends updates that are honored by all devices in the system. A VTP secondary server can only back up the updated VTP configurations received from the primary server to NVRAM.
By default, all devices come up as secondary servers. Primary server status is needed only for database updates when the administrator issues a takeover message in the domain. You can have a working VTP domain without any primary servers.
Primary server status is lost if the device reloads or domain parameters change.
![]() Note |
This command is supported only when the switch is running VTP Version 3. |
This example shows how to configure the switch as the primary VTP server for VLANs:
Switch# vtp primary vlan Setting device to VTP TRANSPARENT mode.
You can verify your settings by entering the show vtp status privileged EXEC command.
Command |
Description |
Displays general information about VTP management domain, status, and counters. |
|
Globally configures VTP domain name, password, pruning, version, and mode. |
To enable broadcast support on a VLAN, use the wireless broadcast vlan command in global configuration mode. To disable Ethernet broadcast support, use the no form of the command.
wireless broadcast vlan [ vlan-id]
no wireless broadcast vlan [ vlan-id]
vlan-id | (Optional) Specifies the VLAN ID to enable broadcast support to that VLAN. The value ranges from 1 to 4095. |
None
Global configuration mode
Release | Modification |
---|---|
Cisco IOS XE 3.2SE |
This command was introduced. |
Use this command in the global configuration mode only.
This example shows how to enable broadcasting on VLAN 20:
Switch(config)# wireless broadcast vlan 20