FTOS Configuration Guide for the C-Series - Force10 Networks

Configuring Interfaces for Layer 2 Mode
All interfaces on all switches that will participate in Spanning Tree must be in Layer 2 mode and enabled.
R1(conf)# int range gi 1/1 - 4
R1(conf-if-gi-1/1-4)# switchport
R1(conf-if-gi-1/1-4)# no shutdown
R1(conf-if-gi-1/1-4)#show config
!
interface GigabitEthernet 1/1
no ip address
switchport
no shutdown
!
interface GigabitEthernet 1/2
no ip address
switchport
no shutdown
!
interface GigabitEthernet 1/3
no ip address
switchport
no shutdown
!
interface GigabitEthernet 1/4
no ip address
switchport
no shutdown
Figure 267 Example of Configuring Interfaces for Layer 2 Mode
To configure the interfaces for Layer 2 and then enable them:
Step Task Command Syntax Command Mode
1 If the interface has been assigned an IP
address, remove it.
Verify that an interface is in Layer 2 mode and enabled using the show config command from
INTERFACE mode.
Figure 268 Verifying Layer 2 Configuration
R1 R2
no ip address INTERFACE
2 Place the interface in Layer 2 mode. switchport INTERFACE
3 Enable the interface. no shutdown INTERFACE
R1(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
no ip address
switchport
no shutdown
R1(conf-if-gi-1/1)#
1/1 1/2
3/1 3/2
FTOS Configuration Guide, version 7.7.1.0 387
R3
1/3
1/4
3/3
3/4
2/1
Indicates that the interface is in Layer 2 mode
2/2 2/3 2/4