Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


mjb



922 posts

Ultimate Geek
+1 received by user: 21

Trusted

Topic # 108646 3-Sep-2012 14:50 Send private message

I've got 3 cisco routers participating in a DMVPN (2x 857, 1x 877), which works well.

Enabling CDP on the 857's works as expected, but enabling it on the 877 ends up killing the VPN to/from the 877.

Any pointers on where to look?

877:
System image file is "flash:c870-advipservicesk9-mz.124-24.T.bin"

857's:
System image file is "flash:c850-advsecurityk9-mz.124-15.T15.bin"




contentsofsignaturemaysettleduringshipping

Create new topic
190 posts

Master Geek
+1 received by user: 1

Subscriber

  Reply # 682644 7-Sep-2012 07:20 Send private message

Try adding no cdp enable on the 877's tunnel interface that hosts your DMVPN.

Then you can enable CDP for the router to see local devices.

Enabling CDP on DMVPN is used for some additional features you wouldn't need with 3 sites.

Also if you have current SmartNets there is a newer release in the 12.4 train for 877's. 12.4(24) had a lot of DMVPN bugs and they weren't fixed until approx T4. I think the latest 12.4 for 877 was 12.4(24)T7 ish. You could be hitting a bug.

mjb



922 posts

Ultimate Geek
+1 received by user: 21

Trusted

  Reply # 682648 7-Sep-2012 07:55 Send private message

bender: Try adding no cdp enable on the 877's tunnel interface that hosts your DMVPN.

Then you can enable CDP for the router to see local devices.

Enabling CDP on DMVPN is used for some additional features you wouldn't need with 3 sites.


It's actually the tunnel interface I want CDP for. I had already tried disabling CDP on the interface - and in fact, even if it's disabled on them all, as soon as 'cdp run' is entered, the tunnel stops passing traffic.

bender: Also if you have current SmartNets there is a newer release in the 12.4 train for 877's. 12.4(24) had a lot of DMVPN bugs and they weren't fixed until approx T4. I think the latest 12.4 for 877 was 12.4(24)T7 ish. You could be hitting a bug.


Yeah, I've been suspecting as much. I'll probably be upgrading to 15.1 once the flash/dram upgrades arrive. ;)

Thanks for the reply.




contentsofsignaturemaysettleduringshipping

mjb



922 posts

Ultimate Geek
+1 received by user: 21

Trusted

  Reply # 684112 10-Sep-2012 21:17 Send private message

Yep, CDP works fine after upgrading IOS (now on 15.1(4)M4).

Thanks for the help!




contentsofsignaturemaysettleduringshipping

Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

Does NZ need better gun laws?
Created by mattwnz, last reply by Stan on 1-Sep-2014 23:36 (68 replies)
Pages... 3 4 5


Judith Collins: I am resigning
Created by Presso, last reply by testha on 1-Sep-2014 20:06 (107 replies)
Pages... 6 7 8


Ashburton WINZ shooting
Created by gzt, last reply by Geektastic on 1-Sep-2014 23:12 (24 replies)
Pages... 2


Cirque du Soleil Cellphone Hijack
Created by myopinion, last reply by PhantomNVD on 1-Sep-2014 18:01 (21 replies)
Pages... 2


Warning: Rage Ahead - Campbell Live and childhood poverty
Created by kawaii, last reply by Geektastic on 1-Sep-2014 23:19 (20 replies)
Pages... 2


Lightbox quality comments
Created by ronw, last reply by Lurch on 1-Sep-2014 20:14 (99 replies)
Pages... 5 6 7


Orcon Global Mode launched
Created by freitasm, last reply by shk292 on 1-Sep-2014 11:32 (132 replies)
Pages... 7 8 9


Lightbox press event release
Created by freitasm, last reply by IcI on 30-Aug-2014 17:54 (562 replies)
Pages... 36 37 38



Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.