Things that have worked for me: Try to disable CEF on the tunnel interface Make sure you modified the MTU in the tunnel interface Change the Bandwidth in the tunnel interface to 1000. I've seen packet pacing problems with EIGRP on tunnel interfaces.
There are other things that could cause that issue, but maybe you haven't tried these. Like Sumit said, paste your configs here and maybe someone can spot an issue. Regards, Brandon Carroll - CCIE #23837 Senior Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com On May 5, 2010, at 12:11 AM, Michael Davis wrote: > Thanks Sumit – I have tried all these things thanks. Any other ideas? > > From: Sumit Mahla [mailto:[email protected]] > Sent: Wednesday, May 05, 2010 5:09 PM > To: Michael Davis; [email protected] > Subject: RE: [OSL | CCIE_Security] Yusuf Lab 2 > > > > Michael, > > Please check the nhs defined in spokes... it should be Tunnel ip not the NBMA > IP... and nhrp mapping.... be carefull in the mapping... it can escape your > eyes very easily > > and also check the network advertised in the routing protocol... only > advertise the tunnel ip network and the loopback network > > > > > > From: [email protected] > To: [email protected] > Date: Wed, 5 May 2010 16:27:54 +1000 > Subject: [OSL | CCIE_Security] Yusuf Lab 2 > > Hi Everyone – I have got the DMVPN going on Yusuf lab 2. The tunnels work, > but both R3 and R5 are losing the DMVPN adjacencies, then they come straight > up again: > *May 5 06:24:49.271: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 2: Neighbor 172.16.1.1 > (Tunnel0) is down: retry limit exceeded > *May 5 06:24:52.451: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 2: Neighbor 172.16.1.1 > (Tunnel0) is up: new adjacency > Does anyone know what would cause this? > Thanks > Michael > > Invest your money wisely post Budget Sign up now. > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
