ISR4331 how to setup port bridge

[Miyuki]

Hello 

I have following setup, ISP add second router, they have configured HSRP, VIP: x.x.x.105, it used to be just one so now I have one more connection on booth (two on every) 

I need to modify setup to port bridges on selected (red circle) routers but I cannot find any bridging option 

Routers are ISR4331

It have no bridge option in interface menu 

Can you please help me ? 

[Reza Sharifi · Accepted solution]

Have a look at this with config example:

interface Gig0/0/1
   service instance 25 ethernet
     encapsulation dot1q 25
     rewrite ingress tag pop 1 symmetric
     bridge-domain 25
interface Gig0/0/2
   service instance 25 ethernet
     encapsulation dot1q 25
     rewrite ingress tag pop 1 symmetric
     bridge-domain 25
interface BDI25
   ip address X.X.X.X 255.255.255.0
   no shut

link:

https://supportforums.cisco.com/t5/wan-routing-and-switching/bridge-configuration-at-isr-4000/td-p/2665791

HTH

[Miyuki]

And if I don't want to setup any vlan, what should I set to encapsulation? default or untagged ? Without encapsulation setting bridge domain is not accessible, that confused me

[Reza Sharifi · Accepted solution]

I don't have a 4331 to test with, but if it gives you the option you can try untag, if not than you have to give it a vlan id (the same way as the example).

HTH 

[Miyuki]

Thank you much 

It works right 

config:

!
interface GigabitEthernet0/0/2
no ip address
negotiation auto

service instance 1 ethernet
encapsulation untagged
bridge-domain 1

!
!

!
interface BDI1
description Wan-Bridge
ip address x.x.x.x 255.255.255.240
!

[omegav242]

Question on this solution.  In order to do this do I require any special license like AppXK9?

[Michael Wilson]

Can you help listing all the configuration ?

[zombiekil]

Current configuration : 1466 bytes
!
! Last configuration change at 12:55:03 UTC Mon Jun 14 2021
!
version 16.9
service timestamps debug datetime msec
service timestamps log datetime msec
platform qfp utilization monitor load 80
no platform punt-keepalive disable-kernel-core
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
no ip routing
!
!
!
!
login on-success log
!
!
!
!
!
!
!
subscriber templating
multilink bundle-name authenticated
!
!
!
!
!
license udi pid C1117-4P sn
no license smart enable
!
diagnostic bootup level minimal
!
spanning-tree extend system-id
!
!
!
redundancy
mode none
bridge-domain 100
!
controller VDSL 0/2/0
operating mode vdsl2
!
!
vlan internal allocation policy ascending
!
!
!
!
!
!
interface GigabitEthernet0/0/0
no ip address
negotiation auto
!
interface GigabitEthernet0/1/0
!
interface GigabitEthernet0/1/1
!
interface GigabitEthernet0/1/2
!
interface GigabitEthernet0/1/3
!
interface ATM0/2/0
no ip address
shutdown
atm oversubscribe factor 2
no atm enable-ilmi-trap
!
interface Ethernet0/2/0
no ip address
no negotiation auto
no cdp enable
service instance 100 ethernet
encapsulation default
bridge-domain 100
!
!
interface Vlan1
no ip address
service instance 100 ethernet
encapsulation default
bridge-domain 100
!
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
line con 0
transport input none
stopbits 1
line vty 0 4
login
!
!
!
!
!
!
end