12-21-2009 10:10 PM - edited 03-06-2019 09:02 AM
Dear All,
IN our network we are having access switches , core switch 6500, ips and Fwsm .
When i ping to other vlan ip other device , i am getting drops . For 4000 sent packets 75 pkts are lost.
I check the configurations on devices ,trunks, speed ,access list etc all are correct.
what troubleshooting step i have to follow to solve this issue.
thanks,
m.k
12-21-2009 11:07 PM
Hi,
Check step by step for packet loss !!
ping the server from the access switch and check is any packet drop is coming and as well as check the port error in which server is connected.
then ping the server FWSM and so on see where exactly the drop yuu are getting.
Also check the duplex setting from server top access switch.
HTH
Regards
Ganesh.H
12-22-2009 02:19 AM
Hai Ganesh,
Thanks for u r response.
I already tried pinging servers from same subnet and different subnet .
If we ping in same subnet their are no drops and in different subnet there are drops.
I thinks because of IPS , packets are droping .
Note: Packets dropping -- one request time out after 60 pings.
But how to troubleshoot and known exactly what is creating problem.
regards,
m.k
12-22-2009 02:27 AM
Make a monitoring port in switch where IPS port is connecting and sniff the traffic and do the same testing of continous ping for server from different zone.
One more thing check the duplex setting between IPS port and switch , And any error in those ports also.
HTH
Regards
Ganesh.H
12-22-2009 12:46 AM
i think the 1st logical thing you need to check is where exactly are the packet drop taking place on the packet path
.
Try sniffing and check for interface counter errors on interface in b/w
Regards,
Varun
12-22-2009 09:01 AM
Without knowing the details regarding the packet path it is difficult to provide any specific troubleshooting advice.
Hope that helps!
DW
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