2821 dot1x

[lakn]

Hi,

I have an old 2821 with an 12.3 version ios. On that I can do like this:

interface GigabitEthernet0/0

no ip address

duplex auto

speed auto

dot1x port-control force-authorized

!

interface GigabitEthernet0/0.150

encapsulation dot1Q 150

ip address 26.26.26.9 255.255.255.252

!

where I use the command dot1x port-control force-authorized

to enable dot1q tunneling..

I now have an new 2821 with a

c2800nm-advsecurityk9-mz.124-12.bin

version..

and it will not give me the option on the command above. So to speak, I am not able to create subinterfaces on it!

Any one knows how to..

[sourabhagarwal · Accepted solution]

you have currently adavanced security feature set IOS running on 2821.

you need to run IP PLUS feature set IOS on your router, after which you will be able to create sub-interfaces on it.

[lakn]

Looking at :

http://www.cisco.com/cgi-bin/Software/Iosplanner/Planner-tool/iosplanner.cgi?get_crypto=&data_from=&hardware_name=2821&software_name=&release_name=&majorRel=12.4&state=:HW&type=

I cannot find any IP Plus version?

Please advice..

[lakn]

after consulting feature selector I found this:

c2800nm-advipservicesk9-mz.124-6.XE2.bin

[sourabhagarwal]

you can make use of the below tool to find out the ip plus image which can fit into your router, make sure current flash and dram available meets IOS requirement.

http://tools.cisco.com/Support/Fusion/FusionHome.do

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp