ASR 920 support of subinterfaces with vlans?

[john_doyle_affirmed123]

does the ASR 920 support subinterface configurations in GigabitEthernet interfaces like the ASR1001?

example of ASR 1001 configuration:

interface TenGigabitEthernet0/0/1
 no ip address
!
interface TenGigabitEthernet0/0/1.1
 encapsulation dot1Q 4011
 ip address 10.11.51.1 255.255.255.0
 ipv6 address 2001:470:8865:A5B::6D/64
 ipv6 enable
 bfd interval 100 min_rx 100 multiplier 3

The ASR920 CLI does not allow a subinterface to be created on the GigabitEthernet interfaces:

QAcore2(config)#interface GigabitEthernet0/0/0.1
                           ^
% Invalid input detected at '^' marker.

[InayathUlla Sharieff]

Hi,

The sub-interface behavior shall be achieved by creating service instances/BDIs  under the physical interfaces as below.

interface GigabitEthernet0/0/0
no ip address
load-interval 30
cdp enable

service instance 1 ethernet
  encapsulation dot1q 4011
  rewrite ingress tag pop 1 symmetric
  bridge-domain 4011
!
end

interface BDI4011
ip address 10.11.51.1 255.255.255.0
end

ASR920#sh bridge-domain 4011
Bridge-domain 4011 (2 ports in all)
State: UP                    Mac learning: Enabled
Aging-Timer: 300 second(s)
Maximum address limit: 16000
    4011  (up)
    GigabitEthernet0/0/0 service instance 1

ASR920#

A Configuration guide can be found via:

Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
Configuring IEEE 802.1ad

http://www.cisco.com/c/en/us/td/docs/ASR920s/asr920/configuration/guide/ce/b_ce_xe-313s-as
r920-book/b_ce_xe-313s-asr920-book_chapter_01100.html

HTH

Regards

Inayath

**Please do nt forget to rate if this info is helpfull.

[john_doyle_affirmed123]

Many thanks Inayath, I shall try this

[InayathUlla Sharieff]

john,

Thanks sure I will wait for your update.

[Liridon Qarkaxhija]

Hi,

Sub-interfaces are not the same as using bridge ones. BDI limits you to only use 4095 IP addresses per device, if one is using one per bridge. Back to the original question, is it possible to use sub-interfaces?

Thank you,

Liridon

[xavertooth]

Thanks for the solution. But how do we monitor the BDI? LibreNMS doesn't seem to show the graph for the BDIs. Any other Solutions for this?