This is an example of output from the show vlan command. In the show vlan private-vlan output, the primary and secondary VLAN pair is shown as nonoperational. For example, if you define and associate two VLANs as primary and secondary VLANs and then delete the secondary VLANĬonfiguration without removing the association from the primary VLAN, the VLAN that was the secondary VLAN is shown as normal In the show vlan private-vlan type command output, a type displayed as normal means a VLAN that has a private VLAN association but is not part of the private VLAN is not included in the show vlan private-vlan command output. If you try to associate a private VLAN secondary VLAN with a primary VLAN before you define the secondary VLAN, the secondary If the MTU-Mismatch column displays yes, the names of the ports with the MinMTU and the MaxMTU appear. If the VLAN does not have an SVI, the hyphen (-) symbol appears in the SVI_MTUĬolumn. To a port with a smaller MTU might be dropped. When yes appears in theĬolumn, it means that the VLAN has ports with different MTUs, and packets that are switched from a port with a larger MTU ![]() In the show vlan mtu command output, the MTU_Mismatch column shows whether all the ports in the VLAN have the same MTU. The ifindex keyword is not supported, even though it is visible in the command-line help string. (Optional) Displays VLAN summary information. ![]() (Optional) Displays information about Remote SPAN (RSPAN) VLANs. (Optional) Displays only private VLAN ID and type. This keyword is only supported if your switch is running the Isolated, or primary) and ports belonging to the private VLAN. (Optional) Displays information about configured private VLANs, including primary and secondary VLAN IDs, type (community, The VLAN name is an ASCII string from 1 to (Optional) Displays information about a single VLAN identified by the VLAN name. (Optional) Displays a list of VLANs and the minimum and maximum transmission unit (MTU) sizes configured on ports in the VLAN. (Optional) Displays information about a single VLAN identified by the VLAN ID number. (Optional) Displays information about VLAN groups. (Optional) Displays one line for each VLAN with the VLAN name, status, and its ports. To display the parameters for all configured VLANs or one VLAN (if the VLAN ID or name is specified) on the switch, use the To debug a specific stack member, youĬan start a CLI session from the active switch by using the session switch stack-member-number privileged EXEC command. When you enable debugging on a switch stack, it is enabled only on the active switch. VTP_PRUNING_LOG_ALERT, and VTP_PRUNING_LOG_WARNING macros in the VTP pruning code. ![]() They are generated by the VTP_PRUNING_LOG_NOTICE, VTP_PRUNING_LOG_INFO, VTP_PRUNING_LOG_DEBUG, If no additional parameters are entered after the pruning keyword, VTP pruning debugging messages appear. The undebug sw-vlan vtp command is the same as the no debug sw-vlan vtp command. Layer to send, except for pruning packets. (Optional) Displays debug messages for the contents of all outgoing VTP packets that the VTP code requests the Cisco IOS VTPĭisplays debug messages for VTP redundancy.ĭisplays debug messages for the contents of all outgoing VTP packets that the VTP code requests the Cisco IOS VTP platform-dependent (Optional) Displays debug messages for the contents of all incoming VTP pruning packets that have been passed into the VTPĬode from the Cisco IOS VTP platform-dependent layer. IOS VTP platform-dependent layer, except for pruning packets.ĭisplays debug messages generated by the pruning segment of the VTP code. To disable debugging, use the no form of this command.ĭebug sw-vlan ĭisplays debug messages for general-purpose logic flow and detailed VTP messages generated by the VTP_LOG_RUNTIME macro inĭisplays debug messages for the contents of all incoming VTP packets that have been passed into the VTP code from the Cisco To enable debugging of VLAN manager activities, use the debug sw-vlan command in privileged EXEC mode.
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