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.
Buying anything on Amazon? Please use the Geekzone Amazon aff link.


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:





Trending now »

Hot discussions in our forums right now:

Gigatown winner town and plans
Created by freitasm, last reply by loceff13 on 26-Nov-2014 23:01 (42 replies)
Pages... 2 3


Click Monday Deals
Created by mrtoken, last reply by Krishant007 on 24-Nov-2014 17:11 (25 replies)
Pages... 2


Gull Employment Dispute.
Created by networkn, last reply by Geektastic on 26-Nov-2014 16:35 (142 replies)
Pages... 8 9 10


Letter from Vodafone Speed Decrease WTF
Created by rokki, last reply by michaelmurfy on 26-Nov-2014 23:30 (21 replies)
Pages... 2


HP Stream 7 arrives
Created by gnfb, last reply by gnfb on 26-Nov-2014 22:49 (19 replies)
Pages... 2


The Warehouse pulling R18 games and DVD's
Created by semigeek, last reply by mattwnz on 26-Nov-2014 16:13 (56 replies)
Pages... 2 3 4


Harmoney Credit Offer
Created by rendezvous, last reply by Aredwood on 26-Nov-2014 22:45 (13 replies)

Playing with G.722 HD Voice
Created by aw, last reply by aw on 26-Nov-2014 20:26 (13 replies)


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.