Users Guide

By default, a trunk interface carries only untagged trac on the access VLAN — you must manually congure other VLANs for tagged

trac.

1 Select one of the two available options:

• Congure L2 trunking in INTERFACE mode and the tagged VLAN trac that the port can transmit. By default, a trunk port is not

added to any tagged VLAN. You must create a VLAN before you can assign the interface to it.

switchport mode trunk

switchport trunk allowed vlan vlan-id-list

• Recongure the access VLAN assigned to a L2 access or trunk port in INTERFACE mode.

switchport access vlan vlan-id

2 Enable the interface for L2 trac transmission in INTERFACE mode.

no shutdown

L2 interface conguration

OS10(config)# interface ethernet 1/1/7

OS10(conf-if-eth1/1/7)# switchport mode trunk

OS10(conf-if-eth1/1/7)# switchport trunk allowed vlan 5,10

OS10(conf-if-eth1/1/7)# no shutdown

L3 mode conguration

Ethernet and port-channel interfaces are in L2 access mode by default. When you disbale L2 mode and then assign an IP address to an

Ethernet port interface, you place the port in L3 mode.

Congure one primary IP address in L3 mode. You can congure up to 255 secondary IP addresses on an interface. At least one interface in

the system must be in L3 mode before you congure or enter a L3 protocol mode, such as OSPF.

1 Remove a port from L2 switching in INTERFACE mode.

no switchport

2 Congure L3 routing in INTERFACE mode. Add the keyword secondary to congure backup IP addresses.

ip address address [secondary]

3 Enable the interface for L3 trac transmission in INTERFACE mode.

no shutdown

L3 interface conguration

OS10(config)# interface ethernet 1/1/9

OS10(conf-if-eth1/1/9)# no switchport

OS10(conf-if-eth1/1/9)# ip address 10.10.1.92/24

OS10(conf-if-eth1/1/9)# no shutdown

View L3 conguration error

OS10(config)# interface ethernet 1/1/1

OS10(conf-if-eth1/1/1)# ip address 1.1.1.1/24

% Error: remove Layer 2 configuration before assigning an IP

Management interface

The Management interface provides management access to the network device. You can congure the Management interface, but the

conguration options on this interface are limited. You cannot congure gateway addresses and IP addresses if it appears in the main

routing table, and proxy ARP is not supported on this interface.

1 Congure the Management interface in CONFIGURATION mode.

interface mgmt 1/1/1

2 Congure an IP address and mask on the Management interface in INTERFACE mode.

ip address A.B.C.D/prefix-length

Interfaces