If you default an interface, will all the sub-interfaces be removed as well?

[praveenmathew27]

Lets say I have the below config.  

interface GigabitEthernet0/0/1

description test
encapsulation dot1Q 201
ip address x.x.x.x
no ip redirects
no ip proxy-arp
standby version 2
standby 201 ip y.y.y.y.y 
standby 201 timers msec 500 2
standby 201 priority 200
standby 201 preempt delay minimum 270 reload 300
standby 201 track 1 decrement 150
!

interface GigabitEthernet0/0/1.200
description test2
encapsulation dot1Q 200
ip address x.x.x.y
no ip redirects
no ip proxy-arp
standby version 2
standby 200 ip y.y.y.y.x
standby 200 timers msec 500 2
standby 200 priority 150
standby 200 preempt
!

And another 3 sub-interfaces .212, .300, .400 

If i do "default interface GigabitEthernet0/0/1" , will it remove the sub-interfaces as well? 

[luis_cordova]

Hi @praveenmathew27,

Check this link:

https://blog.ipspace.net/2007/06/default-interface-configuration-command.html

I think can help you.

Regards

[praveenmathew27]

Thanks for the link, but just wanted to get confirmation, as this is on an ASR1001, running 15.4(1)S1 , using GigabitEthernet interface. 

[MUHAMMAD TAYYAB MUNIR]

Hi,

The provided link is very old and As of now, it should not impact on the subinterface if you do default the main interface. However, I would advise you contact with Cisco TAC to get the confirmation.

BR

Tayyab

[paul driver · Accepted solution]

Hello

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@praveenmathew27 wrote:

Lets say I have the below config. 

If i do "default interface GigabitEthernet0/0/1" , will it remove the sub-interfaces as well? 

---

No it will not remove the sub-interfaces it will just default the physical interface only to its default config, the same if you perform a default to a sub-interface, it will just default that specific sub-interface.