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DMVPN with 270 spokes

Hi

We have a DMVPN network with about 270 spokes (831) and 2 hubs (3825). We run EIGRP in all branch of the network.

We had experience many problems so far, but one of them seems to be related with the amount of traffic that is generated when some of our hub went down for about 15 to 30 seconds. All of our spokes start blinking on EIGRP but our VPN still up. Here is some of our messages that we have on Hub side (peer goodbye receive, stuck in active, hold timer expire). Our EIGRP timer are 5/15 but we tried 60/180, but we had the same issue.

We have a fiber 5Mb on one hub and the other hub have 10Mb fiber link.

Does anyone heard someting about that ?

Thank your very much for your help.

1 REPLY
Anonymous
N/A

Re: DMVPN with 270 spokes

This problem may happen because of various reasons like one of the neighbors reseting the other due to routes stuck in active, some router reporting a k-value mismatch, etc. Following links may help you

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800949ab.shtml

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093feb.shtml

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