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Command Show VTP Status Use Displays VTP information on the switch. Syntax Show# show vtp status Example Here is the output of the VTP status on SW3. CopySW3# show vtp status VTP Version : 2 Configuration Revision : 23 Maximum VLANs supported locally : 1005 Number of existing …
Command Show Interface-Trunk Use Displays the trunk information on the switch. Syntax Switch#show interface trunk Example Here’s the output of show interface trunk for SW3. CopySW3#show interface trunk Port Mode Encapsulation Status Native vlan Fa0/19 auto n-802.1q trunking 1 Fa0/20 auto n-802.1q trunking 1 Fa0/21 auto n-802.1q trunking 1 Fa0/22 …
Command Show Mac-Address-Table Use Displays the mac address table on the switch. Syntax Switch#show mac-address-table Example In this example, the mac address table is displayed for SW3. CopySW3#show mac-address-table Mac Address Table ——————————————- Vlan Mac Address Type Ports —- ———– ——– —– All 0100.0ccc.cccc STATIC CPU All 0100.0ccc.cccd …
Command Show Spanning-Tree Vlan Use Shows the spanning tree information for a specific VLAN on the switch. Syntax Switch#show spanning-tree vlan <number> Example In this example, the spanning tree configuration for VLAN 1 is displayed on SW3. CopySW3#show spanning-tree vlan 1VLAN0001 Spanning tree enabled protocol ieee Root ID …
Command Show Vlan Brief Use Shows a basic summary of the VLAN information on the switch. Syntax Switch#show vlan brief Example Here is the show vlan brief output for SW3. CopySW3#show vlan brief VLAN Name Status Ports —- ——————————– ——— ——————————- 1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, …
Command Show Port-Sec Use Shows the port-security status on the switch / interface. Syntax Show#show port-sec Or Show#show port-sec <int> Example This first example is the output of show port-sec on SW3. CopySW3#show port-sec Secure Port MaxSecureAddr CurrentAddr SecurityViolation Security Action (Count) (Count) (Count) ————————————————————————— Fa0/2 1 1 2 Shutdown ————————————————————————— …
Command Show Spanning-Tree Use Displays the spanning tree configuration on the switch. Syntax Switch#show spanning-tree Example In this example, the spanning tree configuration for VLAN 1 is displayed on SW3. CopySW3#show spanning-tree vlan 1VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32769 Address 0018.b973.fc80 Cost 19 Port …
Command Show Vlan Use Displays the current VLAN configuration on the switch. Syntax Switch#show vlan Example Here, the VLAN configuration is displayed for SW3. CopyVLAN Name Status Ports —- ——————————– ——— ——————————- 1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10, Fa0/11, Fa0/12 Fa0/13, …
Command Switchport Port-Security Violation Use Sets the action that occurs to the switch port when a violation is triggered. The violation types are: Protect: Ignores all traffic on the interface Restrict: Ignores all traffic on the interface, but sends SNMP trap. Shutdown (default): Shuts the port down and does not allow …
Command Switchport Port-Security Mac-Address Use Sets the mac-address(es) that causes port-security violation. Syntax Switch(config-if)#switchport port-security mac-address <h.h.h.h> Or Switch(config-if)#switchport port-security mac-address sticky Use sticky in conjunction with switchport port-security maximum to have the switch learn which mac-addresses to allow. For example, if you set switchport port-security maximum 5, then the switch will learn and allow …
