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AxeonTech
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Server responding with delays on every other ping

OK, Odd one here.  I've tested extensively and have concluded that I'm baffled.  New Server 2008 R2 running on Intel hardware connected to Cisco Switches (10/100).  We are having odd communication problems (AV database replication, AD updateing, etc.) so I've done some ping testing on the server interface and get the following:

eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=368ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=355ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=352ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=348ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=336ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=353ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=355ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=351ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=319ms TTL=128
eply from 10.17.162.250: bytes=20 time<1ms TTL=128
eply from 10.17.162.250: bytes=20 time=397ms TTL=128

It is not constant but enough to be suspiscious.  It is apparent on traffic to this server from VPN point to point locations as well as on the LAN.  ANy ideas?

Jason

Networking ProtocolsNetworking

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AxeonTech

8/22/2022 - Mon
senthil_var2000

Your networking of lan looks wrong here.  also check your DNS. your domain name has some conflict with outside the lan (internet same dome name)..
AxeonTech

ASKER
How can you tell that?  The 10.17.162.0/24 is an inside subnet -no relation to public records. (other than the other side of the NAT).
senthil_var2000

try hidden camera software which can view the client pc without any distrubunce.. But use on your own risk.. don't misuse.. by stealing online tracnsation no.

Hidden Camera 250x1 v2.29
http://hidden-camera-250x1.smartcode.com/images/sshots/hidden_camera_250x1_9186.jpeg
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senthil_var2000

sorry perivous comment is for other forum. please omitt it..

senthil_var2000:
try hidden camera software which can view the client pc without any distrubunce.. But use on your own risk.. don't misuse.. by stealing online tracnsation no.

Hidden Camera 250x1 v2.29
http://hidden-camera-250x1.smartcode.com/images/sshots/hidden_camera_250x1_9186.jpeg
senthil_var2000

can u tell me the domain name. try ping your domain and see whether it goes to the server or outside to internet..
AxeonTech

ASKER
Don't think I need to.  Changed the NIC properties to 100 Mbps Half Duplex and pings are normal across the board.  I'll update if that changes for anyone's benefit.  Will try Full Duplex and test but Auto-Negotiate was not getting the job done.
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Mistralol


Looks like TSC duel core bug in ping application. I even get responses on my system with a ping reply time of < 0 !!!

to find out

run ping -t ip address
then go into the taks manager and set the cpu affinity to only run on a single core.

Does the output look more sane after this?
ASKER CERTIFIED SOLUTION
Nayyar HH (CCIE RS)

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AxeonTech

ASKER
Changing port speeds was the solution.