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DMVPN - 2600 crash


I'm testing DMVPN using 2620 and 2621 routers.

I tested them with version 12.2.15T2 and the 12.3(1).

One of the 2600 is configured as Spoke . It does works for a while. But from time to time, the router will crash and reload. With both version tested.

I have 32M of Flash and 64M of DRAM.

Here is the output when it crash:


00:16:53: %NHRP-3-PAKREPLY: Receive Resolution Reply packet with error - insufficient resources(5)

Unexpected exception to CPUvector 1200, PC = 80443298

-Traceback= 80443298 8044353C 80443644 80908A7C 80908C04 80459FC8 8045D568

Writing crashinfo to flash:crashinfo_19930301-001656

Queued messages

*** System received a SegV exception ***

signal= 0xb, code= 0x1200, context= 0x828d6bb8

PC = 0x80443298, Vector = 0x1200, SP = 0x82eaac98

System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)

Copyright (c) 2000 by cisco Systems, Inc.

C2600 platform with 65536 Kbytes of main memory


The other router, configured as Spoke or Hub doesn<t seem to get this problem.

Any Ideas why is it crashing ?

Thanks !


New Member

Re: DMVPN - 2600 crash

I did some further testing.

The problem seems to be related to Redundant Hubs.

If I only have one Hub ans many spoke, it works fine.

If I have two Hub, one for redundancy, then I get the error message when I try to ping one of the hub, which crash the Spoke router itself.

Where can I find a good configurations (hubs and spokes) of DMVPN using a two Hubs for redundancy ? I may have configuration errors that provoke this crash.

Thanks for all your help.


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