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VLAN Commands:
Dell™ PowerEdge™ 1655MC Integrated Switch User's Guide

vlan database

vlan

interface vlan

switchport ingress-filtering

switchport acceptable-frame-types

switchport mode

switchport allowed vlan

switchport native vlan

switchport forbidden vlan

show vlan

show interfaces switchport

The commands described in this section are used to create Virtual Local Area Networks (VLAN) groups, add port members, specify how VLAN tagging is used, and enable automatic VLAN registration for the selected interface.

vlan database

Use this command to enter VLAN database mode. All commands in this mode will take effect immediately.

Default Setting

None

Command Mode

Global Configuration

Command Usage

• Use the VLAN database command mode to add, change, and delete VLANs. After finishing configuration changes, you can display the VLAN settings by entering the show vlan command.
• Use the interface vlan command mode to define the port membership mode and add or remove ports from a VLAN. The results of these commands are written to the running-configuration file, and you can display this file by entering the show running-config command.

Example

(config)#vlan database (config-vlan)#

Related Commands

show vlan

vlan

Use this command to configure a VLAN. Use the no form to restore the default or delete a VLAN.

Syntax

vlan vlan-id [name vlan-name] media ethernet [state {suspend | active}]
no vlan vlan-id [name | state]

• vlan-id - ID of the configured VLAN. (Range: 1-4094, no leading zeroes)
• name - Keyword to be followed by the VLAN name.
  • vlan-name - ASCII string from 1 to 32 characters.
• media ethernet - Ethernet media type.
• state - Keyword to be followed by the VLAN state.
  • active - VLAN is operational.
  • suspend - VLAN is suspended. Suspended VLANs do not pass packets.

Default Setting

By default only VLAN 1 exists and is active.

Command Mode

VLAN Database Configuration

Command Usage

• When no vlan vlan-id is used, the VLAN is deleted.
• When no vlan vlan-id name is used, the VLAN name is removed.
• When no vlan vlan-id state is used, the VLAN returns to the default state (i.e., active).
• You can configure up to 255 VLANs on this switch.

Example

The following example adds a VLAN, using vlan-id 105 and name RD5. The VLAN is activated by default.

(config)#vlan database (config-vlan)#vlan 105 name RD5 media ethernet (config-vlan)#

Related Commands

show vlan

interface vlan

Use this command to enter interface configuration mode for VLANs, and configure a physical interface.

Syntax

interface vlan vlan-id

vlan-id - ID of the configured VLAN. (Range: 1-4094, no leading zeroes)

Default Setting

None

Command Mode

Global Configuration

Example

The following example shows how to set the interface configuration mode to VLAN 1, and then assign an IP address to the VLAN:

(config)#interface vlan 1 (config-if)#ip address 192.168.1.254 255.255.255.0 (config-if)#

Related Commands

shutdown

switchport ingress-filtering

Use this command to enable ingress filtering for a port. Use the no form to restore the default.

Syntax

switchport ingress-filtering
no switchport ingress-filtering

Default Setting

Disabled

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

• If ingress filtering is enabled, incoming frames for VLANs which do not include this ingress port in their member set will be discarded at the ingress port.
• Ingress filtering does not affect VLAN independent Bridge Protocol Data Unit (BPDU) frames, such as STP. However, they do affect VLAN dependent BPDU frames.

Example

The following example shows how to set the interface to port 1 and then enable ingress filtering:

(config)#interface ethernet 1/1 (config-if)#switchport ingress-filtering (config-if)#

switchport acceptable-frame-types

Use this command to configure the acceptable frame types for a port. Use the no form to restore the default.

Syntax

switchport acceptable-frame-types {all | tagged}
no switchport acceptable-frame-types

• all - The port passes all frames, tagged or untagged.
• tagged - The port only passes tagged frames.

Default Setting

All frame types

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

• If a port is is connected to a VLAN-aware device at the other end of a VLAN trunk, you can set the port to pass only tagged frames. Otherwise, you must configure the port to pass all frame types.
• This command and the switchport mode command have the same effect.

Example

The following example shows how to restrict the traffic passed on port 1 to tagged frames:

(config)#interface ethernet 1/1 (config-if)#switchport acceptable-frame-types tagged (config-if)#

Related Commands

switchport mode

switchport mode

Use the switchport mode command to configure the VLAN membership mode for a port. Use the no form to restore the default.

Syntax

switchport mode {trunk | hybrid}
no switchport mode

• trunk - Specifies a port as an endpoint for a VLAN trunk. A trunk is a direct link between two switches, so the port transmits and receives tagged frames that identify the source VLAN.
• hybrid - Keyword that specifies a hybrid VLAN interface. The port may receive or transmit tagged or untagged frames. Any frames that are not tagged will be assigned to the default VLAN.

Default Setting

All ports are in hybrid mode with the PVID set to VLAN 1.

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

This command and the switchport acceptable-frame-types command have the same effect.

Example

The following shows how to set the configuration mode to port 1, and then set the switchport mode to hybrid:

(config)#interface ethernet 1/1 (config-if)#switchport mode hybrid (config-if)#

Related Commands

switchport acceptable-frame-types

switchport allowed vlan

Use this command to configure untagged and tagged ports. Use the no form to restore the default.

Syntax

switchport allowed vlan {add vlan-id [tagged | untagged] | remove vlan-id}
no switchport allowed vlan

• add vlan-id - VLAN identifier to add.
• remove vlan-id - VLAN identifier to remove.

(Range: 1-4094, no leading zeroes)

Default Setting

• All ports are assigned to VLAN 1 by default.
• The default frame type is untagged.

Command Mode

Interface Configuration (Ethernet, Port Channel)

Example

The following example shows how to add VLANs 1, 2, 5 and 6 to the allowed list as tagged VLANs for port 1:

(config)#interface ethernet 1/1 (config-if)#switchport allowed vlan add 1 tagged (config-if)#switchport allowed vlan add 2 tagged (config-if)#switchport allowed vlan add 5 tagged (config-if)#switchport allowed vlan add 6 tagged (config-if)#

switchport native vlan

Use this command to configure the PVID (i.e., default VID) for a port. Use the no form to restore the default.

Syntax

switchport native vlan vlan-id
no switchport native vlan

vlan-id - Default VLAN ID for a port. (Range: 1-4094, no leading zeroes)

Default Setting

VLAN 1

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

• If the switchport mode is set to trunk, the PVID will be inserted into all untagged frames sent from a tagged port.
• If ingress filtering is disabled, all untagged frames received on this port will be assigned to the VLAN indicated by the PVID.

Example

The following example shows how to set the PVID for port 1 to VLAN 3:

(config)#interface ethernet 1/1 (config-if)#switchport native vlan 3 (config-if)#

switchport forbidden vlan

Use this command to configure forbidden VLANs. Use the no form to remove the list of forbidden VLANs.

Syntax

switchport forbidden vlan {add vlan-id | remove vlan-id}
no switchport forbidden vlan

• add vlan-id - VLAN ID to add.
• Remove vlan-id - VLAN ID to remove.

(Range: 1-4094, no leading zeroes)

Default Setting

No VLANs are included in the forbidden list.

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

This command prevents a port from being automatically added to the specified VLANs via GVRP.

Example

The following example shows how to prevent port 1 from being added to VLAN 3:

(config)#interface ethernet 1/1 (config-if)#switchport forbidden vlan add 3 (config-if)#

show vlan

Use this command to show VLAN information.

Syntax

show vlan [id vlan-id | name vlan-name]

• name - Keyword to be followed by the VLAN ID.
  • vlan-id - ID of the configured VLAN. (Range: 1-4094, no leading zeroes)
• name - Keyword to be followed by the VLAN name.
  • vlan-name - ASCII string from 1 to 15 characters.

Default Setting

Shows all VLANs.

Command Mode

Normal Exec, Privileged Exec

Example

The following example shows how to display information for VLAN 1:

#show vlan id 1 VLAN Type    Name             Status    Ports/Channel groups ---- ------- ---------------- --------- ---------------------------------------    1  Static      DefaultVlan    Active Eth1/ 1 Eth1/ 2 Eth1/ 3 Eth1/ 4 Eth1/ 5                                         Eth1/ 6 Eth1/ 7 Eth1/ 8 Eth1/ 9 Eth1/10                                         Eth1/11 #

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