backup interface support on ASR

[Muhammed AKYUZ]

Hi

do you know backup interface is supported on ASR?

interface GigabitEthernet0/2/1

description 3750_Stack_1

backup interface GigabitEthernet0/2/2

ip address 100.50.50.242 255.255.255.248

end

interface GigabitEthernet0/2/2

description 3750_Stack_2

ip address 100.50.50.242 255.255.255.248

end

TTVPN#sh ip int brief

Interface              IP-Address      OK? Method Status                Protocol

GigabitEthernet0/0/0   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/1   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/2   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/3   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/4   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/5   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/6   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/0/7   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/2/0   unassigned      YES NVRAM  up                    up

Gi0/2/0.90             100.50.90.253   YES NVRAM  up                    up

GigabitEthernet0/2/1   100.50.50.242   YES NVRAM  up                    up

GigabitEthernet0/2/2   100.50.50.242   YES NVRAM  up                    up

GigabitEthernet0/2/3   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/2/4   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/2/5   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/2/6   unassigned      YES NVRAM  administratively down down

GigabitEthernet0/2/7   unassigned      YES NVRAM  administratively down down

GigabitEthernet0       unassigned      YES NVRAM  administratively down down

TTVPN#

[Edison Ortiz]

Backup interface is supported on serial or ISDN interfaces. Routers do not support backup interface on Ethernet.

Regards,

Edison

[Giuseppe Larosa]

Hello,

the right tool to use is an LACP aggregate inteface configured at L3 towards the C3750 stack, it can be configured in the same way on the C3750.

if this would be unsupported on ASR  I would look for using IRB on ASR side.

if even this is unsupported use two indipendent L3 links with an IGP running on both of them.

Hope to help

Giuseppe

[Edison Ortiz · Accepted solution]

Giuseppe,

There is support for link bundling w/ ASR and your suggestion is the right one for this case

http://www.cisco.com/en/US/docs/ios/ios_xe/cether/configuration/guide/ce_lnkbndl_xe_ps9587_TSD_Products_Configuration_Guide_Chapter.html

Regards,

Edison

[Giuseppe Larosa]

Edison,

I have used bundles on IOS XR with 12000 so my guess was based on this fact.

it is better to provide links when possible, but I was short of time when I have answered.

Best Regards

Giuseppe

[Muhammed AKYUZ]

you can do that on 7200 for ethernet..

R3#sh ip int brie

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            unassigned      YES NVRAM  administratively down down   

FastEthernet1/0            1.1.1.3         YES NVRAM  up                    up     

FastEthernet1/1            1.1.1.3         YES manual standby mode          down

[Muhammed AKYUZ]

we have solved the problem by upgrading the software

Sent from Cisco Technical Support iPhone App

[shehzadtesleem]

Dear akyuznet45;

can you share the configurations of 7200 for ethernet