Cisco NM-16ESW - EtherSwitch Switch Manual do Utilizador descarregar pdf (Página 16)

Configuring the Cisco Gigabit EtherSwitch EHWIC

How to Configure Gigabit EtherSwitch EHWICs

Configuring the Cisco Gigabit EtherSwitch EHWIC

OL-23155-01

DETAILED STEPS

Note Ports do not support Dynamic Trunk Protocol (DTP). Ensure that the neighboring switch is set to a mode

that does not send DTP.

Verifying a GigabitEthernet Interface as a Layer 2 Trunk

Use the following show commands to verify the configuration of a GigabitEthernet interface as a Layer

2 trunk:

router#show running-config interface gigabitethernet 0/1/2

Building configuration...

Current configuration: 71 bytes

Command Purpose

Step 1

interface gigabitethernet 0/slot/port

Example:

Router(config)#interface gigabitethernet 0/1/2

Selects the interface to configure.

Step 2

shutdown

Example:

Router(config-if)#shutdown

(Optional) Shuts down the interface to prevent traffic

flow until configuration is complete.

Step 3

switchport mode trunk

Example:

Router(config-if)#switchport mode trunk

Configures the interface as a Layer 2 trunk.

Note Encapsulation is always dot1q.

Step 4

switchport trunk native vlan vlan-num

Example:

Router(config-if)#switchport trunk native vlan 1

(Optional) For 802.1Q trunks, specifies the native

VLAN.

Step 5

switchport trunk allowed vlan {add | except | none |

remove} vlan1[,vlan[,vlan[,...]]

Example:

Router(config-if)#switchport trunk allowed vlan

{add | except | none | remove}

vlan1[,vlan[,vlan[,...]]

(Optional) Configures the list of VLANs allowed on the

trunk. All VLANs are allowed by default. You cannot

remove any of the default VLANs from a trunk.

Step 6

no shutdown

Example:

Router(config-if)#no shutdown

Activates the interface. (Required only if you shut down

the interface.)

Step 7

end

Example:

Router(config-if)#end

Exits interface configuration mode.

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