pim sparse-dense and dynamips

Anyone had these messages before when using PIM sparse-dense on dynamips? IOS is c7200-a3jk9s-mz.124-25e.bin. I don't seem to be getting the same thing when using real gear which makes me suspect dynamips. it just bounces over and over and gives the same console message.

*Apr 28 14:29:05.914: %PIM-5-NBRCHG: neighbor 172.16.45.1 DOWN on interface GigabitEthernet2/0 non DR
*Apr 28 14:29:05.930: %PIM-5-NBRCHG: neighbor 172.16.45.1 UP on interface GigabitEthernet2/0

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Comments

chrisone

Although I have not really messed with GNS3 Multicast Labs, I can assure you that, GNS3 does have bugs in it and not every aspect of IOS is flawless. So it is very possible this is a bug.

Chris_

Haven't deen it in GNS3 but I used to work with multicast a lot and always saw this error if an interface flapped for any reason.

vinbuck

It looks like the underlying problem is dropped packets between Gigabit Ethernet interfaces. It's dropping about 5% of the packets sent. I may try a different IOS image or router type and see what happens

chrisone

hmm interesting, what is your CPU / memory utilization? check the idle PC on your devices.

vinbuck

chrisone wrote: »

hmm interesting, what is your CPU / memory utilization? check the idle PC on your devices.

I've got a pretty good idle cpu...sits around 3-4 percent when i'm not doing anything and goes up to about 50-60 percent when i'm trying to pass traffic. This is with 7 7200s. I've got 2GB ram on Windows 7