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Re: PING WARNING - DUPLICATES FOUND!
Posted: Thu Feb 18, 2016 3:51 pm
by rkennedy
mike4vr wrote:rkennedy wrote:To help answer this -
Is the core machine on the same subnet as the XI machine?
Can you run a ping for a while and see if you see the same results as Fred mentioned?
Are you using a DHCP server in your environment?
I have a feeling this is network related, but we'll have to take a look based on those questions.
Is the core machine on the same subnet as the XI machine?
For some, yes. For some others, no. The problem happens on multiple machines on the same and other subnets.
Can you run a ping for a while and see if you see the same results as Fred mentioned?
I did run a long ping on one of the hosts it repeated the warning for and did not see what Fred mentioned.
Are you using a DHCP server in your environment?
No. They are all static.
We have been running Core for years and just recently migrated over to XI. We have never seen this with Core. In fact, we are still running Core, since XI is, currently, unreliable because of this.
Is the core machine on the same subnet as the XI machine?
For some, yes. For some others, no. The problem happens on multiple machines on the same and other subnets.
I was actually asking if the Core and XI machine are on the same subnet.
Also - as @tmcdonald mentioned, what version of XI are you running?
Re: PING WARNING - DUPLICATES FOUND!
Posted: Thu Feb 18, 2016 4:24 pm
by mike4vr
Sorry, misunderstood the question about the subnet. Yes, they're on the same subnet. But we do have multiple instances of Core running on different subnets and locations.
The version of XI we have is 5.2.3.
Re: PING WARNING - DUPLICATES FOUND!
Posted: Fri Feb 19, 2016 3:17 pm
by tgriep
I have seen this issue in the past and usually what it is is a corrupt routing table in one of the routers between the 2 hosts that you are pinging.
Can you flush the routing table in your routers?
Re: PING WARNING - DUPLICATES FOUND!
Posted: Mon Feb 22, 2016 12:20 pm
by mike4vr
tgriep wrote:I have seen this issue in the past and usually what it is is a corrupt routing table in one of the routers between the 2 hosts that you are pinging.
Can you flush the routing table in your routers?
You're probably right about this. I ran a long ping and saw the (DUP!) eventually. I'll work with our NOC to see if we can figure this out. I can update this thread when I have more information, if you'd like.
Re: PING WARNING - DUPLICATES FOUND!
Posted: Mon Feb 22, 2016 12:36 pm
by rkennedy
Sure, I'll leave this thread open. Let us know if the issue gets resolved after speaking to the NOC.
Re: PING WARNING - DUPLICATES FOUND!
Posted: Thu Mar 24, 2016 1:40 pm
by mike4vr
Sorry for the late response, but it appears that updating the Qlogic NIC firmware drivers resolves the issue.
Re: PING WARNING - DUPLICATES FOUND!
Posted: Thu Mar 24, 2016 1:56 pm
by bwallace
No worries, thanks for the update and glad to hear this is resolved! I'll go ahead and lock this thread now.