Dell S4048T, Configuration Manual

Page: 458 / 1277

• Place the interface in Layer 2 (switching) mode.
INTERFACE mode
switchport
To view the interfaces in Layer 2 mode, use the
show interfaces switchport
command in EXEC mode.
Configuring Layer 3 (Network) Mode
When you assign an IP address to a physical interface, you place it in Layer 3 mode.
To enable Layer 3 mode on an individual interface, use the following commands. In all interface types except
VLANs, the
shutdown
command prevents all traffic from passing through the interface. In VLANs, the
shutdown
command prevents Layer 3 traffic from passing through the interface. Layer 2 traffic is unaffected
by the
shutdown
command. One of the interfaces in the system must be in Layer 3 mode before you
configure or enter a Layer 3 protocol mode (for example, OSPF).
• Enable Layer 3 on an individual interface
INTERFACE mode
ip address ip-address
• Enable the interface.
INTERFACE mode
no shutdown
Example of Error Due to Issuing a Layer 3 Command on a Layer 2 Interface
If an interface is in the incorrect layer mode for a given command, an error message is displayed (shown in
bold). In the following example, the
ip address
command triggered an error message because the interface
is in Layer 2 mode and the
ip address
command is a Layer 3 command only.
Dell(conf-if)#show config
!
interface TenGigabitEthernet 1/2
no ip address
switchport
no shutdown
Dell(conf-if)#ip address 10.10.1.1 /24
% Error: Port is in Layer 2 mode Te 1/2.
Dell(conf-if)#
To determine the configuration of an interface, use the
show config
command in INTERFACE mode or the
various
show interface
commands in EXEC mode.
Configuring Layer 3 (Interface) Mode
To assign an IP address, use the following commands.
• Enable the interface.
INTERFACE mode
no shutdown
Interfaces 458