Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

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Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

VLAN subinterfaces example

Updated: July 31, 2026

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This topic provides configuration examples that show how to create VLAN subinterfaces on the Cisco 8000 Series Router, including subinterfaces on a physical Ethernet interface and on an Ethernet bundle.

The following example shows how to create three VLAN subinterfaces at one time:

Router# configure
Router(config)# interface TenGigE 0/2/0/4.1
Router(config-subif)# encapsulation dot1q 100
Router(config-subif)# ipv4 address 10.0.10.1/24
Router(config-subif)# interface TenGigE0/2/0/4.2
Router(config-subif)# encapsulation dot1q 101
Router(config-subif)# ipv4 address 10.0.20.1/24
Router(config-subif)# interface TenGigE0/2/0/4.3
Router(config-subif)# encapsulation dot1q 102
Router(config-subif)# ipv4 address 10.0.30.1/24
Router(config-subif)# commit
Router(config-subif)# exit
Router(config)# exit

Router# show ethernet trunk bundle-Ether 1
Trunk                                Sub types        Sub states
VLAN trunks: 1,
  1 are 802.1Q (Ether)
Sub-interfaces: 3,
  3 are up.
802.1Q VLANs: 3,
  3 have VLAN Ids,

Router# show vlan interface
Interface     St Ly   MTU   Subs   L3       Up   Down  Ad-Down
Te0/2/0/4.1         802.1Q              10  up
Te0/2/0/4.2         802.1Q              20  up
Te0/2/0/4.3         802.1Q              30  up

Router# show vlan trunks brief
BE1           Up L3   1514    1000        0    1000     1000       0       0
Summary                       1000        0    1000     1000       0       0
Te0/2/0/4           802.1Q (Ether)        up

The following example shows how to create two VLAN subinterfaces on an Ethernet bundle:

Router# configure
Router(config)# interface bundle-ether 2
Router(config-if)# ipv4 address 192.168.2.1/24
Router(config-if)# exit
Router(config)# interface bundle-ether 2.1
Router(config-subif)# encapsulation dot1q 100
Router(config-subif)# ipv4 address 192.168.100.1/24
Router(config-subif)# exit
Router(config)# interface bundle-ether 2.2
Router(config-subif)# encapsulation dot1q 200
Router(config-subif)# ipv4 address 192.168.200.1/24
Router(config-subif)# exit
Router(config)# commit