Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 632

Assign an IP Address to a VLAN, Native VLANs

Page 632 highlights

www.dell.com | support.dell.com The only way to remove an interface from the default VLAN is to place the interface in Default mode by using the no switchport command in INTERFACE mode. Assign an IP Address to a VLAN VLANs are a Layer 2 feature. For two physical interfaces on different VLANs to communicate, you must assign an IP address to the VLANs to route traffic between the two interfaces. The shutdown command in INTERFACE mode does not affect Layer 2 traffic on the interface; the shutdown command only prevents Layer 3 traffic from traversing over the interface. Note: You cannot assign an IP address to the default VLAN, which, by default, is VLAN 1. To assign another VLAN ID to the default VLAN, use the default vlan-id vlan-id command. To assign an IP address, use the following command in INTERFACE mode: Command Syntax ip address ip-address mask [secondary] Command Mode Purpose INTERFACE Configure an IP address and mask on the interface. • ip-address mask - Enter an address in dotted-decimal format (A.B.C.D) and the mask must be in slash format (/24). • secondary - This is the interface's backup IP address. In FTOS, you can place VLANs and other logical interfaces in Layer 3 mode to receive and send routed traffic. For more information, refer to Bulk Configuration. Native VLANs Traditionally, ports can be either untagged for membership to one VLAN or tagged for membership to multiple VLANs. An untagged port must be connected to a VLAN-unaware station (one that does not understand VLAN tags), and a tagged port must be connected to a VLAN-aware station (one that generates and understands VLAN tags). Native VLAN support breaks this barrier so that a port can be connected to both VLAN-aware and VLAN-unaware stations. Such ports are called "hybrid ports". Physical and port-channel interfaces may be hybrid ports. Native VLAN is useful in deployments where a Layer 2 port can receive both tagged and untagged traffic on the same physical port. The classic example is connecting a voice over IP (VOIP) phone and a PC to the same port of the switch. The VOIP phone is configured to generate tagged packets (with VLAN = VOICE VLAN), and the attached PC generates untagged packets. 630 | Virtual LANs (VLAN)

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630
|
Virtual LANs (VLAN)
www.dell.com | support.dell.com
The only way to remove an interface from the default VLAN is to place the interface in Default mode by
using the
no switchport
command in INTERFACE mode.
Assign an IP Address to a VLAN
VLANs are a Layer 2 feature. For two physical interfaces on different VLANs to communicate, you must
assign an IP address to the VLANs to route traffic between the two interfaces.
The
shutdown
command in INTERFACE mode does not affect Layer 2 traffic on the interface; the
shutdown
command only prevents Layer 3 traffic from traversing over the interface.
To assign an IP address, use the following command in INTERFACE mode:
In FTOS, you can place VLANs and other logical interfaces in Layer 3 mode to receive and send routed
traffic. For more information, refer to
Bulk Configuration
.
Native VLANs
Traditionally, ports can be either untagged for membership to one VLAN or tagged for membership to
multiple VLANs. An untagged port must be connected to a VLAN-unaware station (one that does not
understand VLAN tags), and a tagged port must be connected to a VLAN-aware station (one that generates
and understands VLAN tags).
Native VLAN support breaks this barrier so that a port can be connected to both VLAN-aware and
VLAN-unaware stations. Such ports are called “hybrid ports”. Physical and port-channel interfaces may be
hybrid ports.
Native VLAN is useful in deployments where a Layer 2 port can receive both tagged and untagged traffic
on the same physical port. The classic example is connecting a voice over IP (VOIP) phone and a PC to the
same port of the switch. The VOIP phone is configured to generate tagged packets (with VLAN = VOICE
VLAN), and the attached PC generates untagged packets.
Note:
You cannot assign an IP address to the default VLAN, which, by default, is VLAN 1. To assign
another VLAN ID to the default VLAN, use the
default vlan-id
vlan-id
command.
Command Syntax
Command Mode
Purpose
ip address
ip-address mask
[secondary]
INTERFACE
Configure an IP address and mask on the interface.
ip-address mask
— Enter an address in
dotted-decimal format (A.B.C.D) and the mask
must be in slash format (/24).
secondary —
This is the interface’s backup IP
address.