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simple bridging of 2 ethernet ports on ASR1001-X

mpauls
Level 1
Level 1

‎01-14-2017 08:35 AM - edited ‎03-08-2019 08:54 AM

Hello,

I recently got a new ASR1001-X running Cisco IOS XE Software, Version 16.04.01.
After trying now 4 days without success creating a simple bridge between 2 ethernet interfaces I decided asking here.

All documentation that I found stated something like this:

interface GigabitEthernet0/0/1
no ip address
negotiation auto
service instance 999 ethernet
encapsulation untagged
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
service instance 999 ethernet
encapsulation untagged
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0

I also tried it with

!
bridge-domain 10
 member GigabitEthernet0/0/1 service-instance 999
 member GigabitEthernet0/0/2 service-instance 999

....

what seems to be the new method doing it.

I connect my computer to GigabitEthernet0/0/1 or GigabitEthernet0/0/2 and can't reach 192.168.55.1 (of course I'm in the same network).
Before someone will ask: yes, the BDI if is not shutdown. ;)

Any ideas for this simple task?

Best regards,

Marc.

Labels:
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24 Replies 24

Georg Pauwen
VIP
VIP

‎01-14-2017 01:12 PM

Hello,

your first configuration is almost right. The service instance is associated with the bridge domain:

interface GigabitEthernet0/0/1
no ip address
negotiation auto
service instance 10 ethernet
encapsulation untagged
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
service instance 10 ethernet
encapsulation untagged
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0

0 Helpful

mpauls
Level 1
Level 1
In response to Georg Pauwen

‎01-15-2017 10:53 AM

Hello,

thank you very much for your reply. Unfortunately it doesn't work.
I connected a simple IP device with 192.168.30.1 on my GigabitEthernet0/0/4.
When assigning the IP directly to this port without any bridge I can reach 192.168.30.1
without any problem.
As soon as I do this:

interface GigabitEthernet0/0/4
 no ip address
 service instance 10 ethernet
 encapsulation untagged
 bridge-domain 10
!
interface BDI10
 ip address 192.168.30.5 255.255.255.0

I can't reach the 192.168.30.1 anymore.

A show interfaces BDI10 shows me my output packets (pings counting) but there is written "Last input never"...
As in some forums I read that you probably need to set "enable irb" - I tried it with and without - no difference...

I would appreciate any ideas!

Thank you!

Marc.

0 Helpful

Georg Pauwen
VIP
VIP
In response to mpauls

‎01-15-2017 11:02 AM

Hello,

try and add the below (in bold) to your BDI configuration:

interface GigabitEthernet0/0/1
no ip address
negotiation auto
service instance 10 ethernet
encapsulation untagged
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
service instance 10 ethernet
encapsulation untagged
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0
encapsulation dot1Q 1 second-dot1q 1
mac-address 1.1.3

0 Helpful

mpauls
Level 1
Level 1
In response to Georg Pauwen

‎01-15-2017 11:26 AM

Hi,

thank you for your reply on Sunday evening ;).

Unfortunately no change... It can't be so difficult bridging two interfaces...
Is there anything that needs to be activated in general? Some config statement or some license or so? I have adventerprise...

Thank you!

Marc.

0 Helpful

Georg Pauwen
VIP
VIP
In response to mpauls

‎01-15-2017 11:32 AM

Marc,

I sent you the config with a small mistake. Second dot1q should be 2. Also, I think the mac address is optional, try to leave it out.

interface GigabitEthernet0/0/1
no ip address
negotiation auto
service instance 10 ethernet
encapsulation untagged
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
service instance 10 ethernet
encapsulation untagged
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0
encapsulation dot1Q 1 second-dot1q 2
mac-address 1.1.3

0 Helpful

Georg Pauwen
VIP
VIP
In response to Georg Pauwen

‎01-15-2017 11:55 AM

Hello Marc,

looking at your config again, the problem might be with the untagged encapsulation. Check if the config below works:

interface GigabitEthernet0/0/1
no ip address
negotiation auto
service instance 10 ethernet
encapsulation dot1q any
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
service instance 10 ethernet
encapsulation dot1q any
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0
encapsulation dot1Q any second-dot1q any

0 Helpful

mpauls
Level 1
Level 1
In response to Georg Pauwen

‎01-15-2017 12:08 PM

Hi,

the "encapsulation dot1q any" statement in the GE interface I already tried too without success. I tried setting the mac address also. In the BDIxx interface the any parameter behind encapsulation doesn't exist. Tried with 1 and 2... but still the same behavior.

Maybe any other ideas? :).

Marc.

0 Helpful

Georg Pauwen
VIP
VIP
In response to mpauls

‎01-15-2017 12:11 PM

Marc,

what is the output of:

show interfaces bdi

0 Helpful

mpauls
Level 1
Level 1
In response to Georg Pauwen

‎01-15-2017 12:13 PM

grey#show interfaces bdi10

BDI10 is up, line protocol is up 

  Hardware is BDI, address is 843d.c601.423f (bia 843d.c601.423f)

  Internet address is 192.168.30.5/24

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec, 

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not supported 

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output 00:00:38, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     529 packets input, 98892 bytes, 0 no buffer

     Received 0 broadcasts (0 IP multicasts)

     0 runts, 0 giants, 0 throttles 

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     130 packets output, 10330 bytes, 0 underruns

     0 output errors, 0 interface resets

     0 unknown protocol drops

     0 output buffer failures, 0 output buffers swapped out

 

0 Helpful

Georg Pauwen
VIP
VIP
In response to mpauls

‎01-15-2017 12:23 PM

Hello, 

weird indeed. I am desperately googling...:(

Try to add this under your BDI interface:

vrf forwarding YOURVRFNAME

0 Helpful

Georg Pauwen
VIP
VIP
In response to Georg Pauwen

‎01-15-2017 12:26 PM

Hello,

did you try encapsulate the interfaces with the service instance value ?

interface GigabitEthernet0/0/1
no ip address
negotiation auto
service instance 10 ethernet
encapsulation dot1q 10
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
service instance 10 ethernet
encapsulation dot1q 10
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0

0 Helpful

mpauls
Level 1
Level 1
In response to Georg Pauwen

‎01-15-2017 12:32 PM

doesn't help too :(

0 Helpful

Georg Pauwen
VIP
VIP
In response to mpauls

‎01-15-2017 12:48 PM

Hello,

I am not sure in how far CDP is important here, but try the bwlo:

interface GigabitEthernet0/0/1
no ip address
negotiation auto
cdp enable
service instance 10 ethernet
encapsulation dot1q 10
bridge-domain 10
!
interface GigabitEthernet0/0/2
no ip address
negotiation auto
cdp enable
service instance 10 ethernet
encapsulation dot1q 10
bridge-domain 10
!
interface BDI10
ip address 192.168.55.1 255.255.255.0
encapsulation dot1Q 10

0 Helpful

mpauls
Level 1
Level 1
In response to Georg Pauwen

‎01-15-2017 12:54 PM

about cdp enable I also read on some sites but it also doesn't help :(

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