Cisco 881 SEC, 3G: sub-interfaces

[neteng]

Can the WAN interface on the Cisco 881 SEC, 3G be sub-interfaced?

[danny0217]

Can for sure, I already configured it in my production network.

cheers! 

[neteng]

Hi,

I am about to purchase this router but would like to confirm that this model (881 router with Advanced IP Services) supports sub-interfaces.  Can you reply with a screenshot or some other form of output showing the device version and the sub-interfaces?  I would greatly appreciate it.

Thanks.

[Reza Sharifi]

Hi,

Yes, it support sub-interfaces.

here is the config guide with sub-interface examples

http://www.cisco.com/en/US/docs/routers/access/800/801/software/configuration/guide/netscene.html#wp1016366

HTH

[neteng]

Hi,

The link you posted has examples for several routers in the 800 series but not the 881.  The Cisco 881 router has only one (1) WAN interface.  I would like to know if this WAN interface can be sub-interfaced.  If you own a 881 router, can you post the show version output along with the sub-interface configuration.  If not, do you know where I can get confirmation of whether or not the WAN interface can be sub-interfaced. 

PS: I sent an email to tac@cisco.com last Friday but I they have not yet responded.

Thanks.

[paolo bevilacqua]

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pointless posting removed.

[Tyrone Van Der Haar]

Sub interfaces are mapped to vlans, so you have to create the vlans first and then you may create the corresponding sub interface.

vlan 30

interface fa4.30

Regards

Tyrone