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intermittent packet drops on way to host
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02-23-2010 01:43 PM
02-23-2010 01:43 PM
intermittent packet drops on way to host
intermittent packet drops on way to host
I have a host on my network, which won't reply to ping requests sporadically. According to the responsible admins, this problem is getting worse since we enabled routing on our 5412zl, which was done by an old cisco device before.
As they blamed me being responsible for this, I configured a mirror for the affected switchport to make sure that there is no packet loss on the network at all. As I expected, all the ping-request packets came out at the mirrorport. The host simply didn't answer all of them. The other way round, if I ping something else from the host, the console says that there are timeouts - although I can see a ping reply for every request on the mirrorport.
There are absolutely no such problems at the entire rest of the network, but this host is making me mad! Additionally the problem also occurs if I am in the same subnet as the host, so I dont think it's a routing issue at all.
Obviously, if I connect my laptop to the host via a 8-port noname switch there are no such problems while pinging the host. Unfortunately, I can't do a packet trace on the host itself as it's an ethernet-adapter of an ibm zseries.
Maybe anyone has an idea what this problem could be based on, or how i should further investigate?
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02-24-2010 12:12 AM
02-24-2010 12:12 AM
Re: intermittent packet drops on way to host
Re: intermittent packet drops on way to host
Anyone from HP here?
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02-24-2010 05:46 AM
02-24-2010 05:46 AM
Re: intermittent packet drops on way to host
Re: intermittent packet drops on way to host
zmichl - Do you have the problem when you are pinging any host to/from the IBM server?
The first thing I would check is if there are any errors reported on the port ("show interface x") and that the duplex settings match from the switch to the server ("show interface brief x" and "show interface conf")
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02-25-2010 09:09 AM
02-25-2010 09:09 AM
Re: intermittent packet drops on way to host
Re: intermittent packet drops on way to host
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