From: Rebstock, Roland (Roland.Rebstock@usi.net)
Date: Thu Jan 08 2004 - 10:15:17 EST
All, I have multiple Solaris 7/8 boxes that seem to have some sort of
ping anomaly going on that I do not see on HPUX 11 or Linux. In
troubleshooting all networking issues related to a slow application, I
stumbled across a issue on Solaris that I cannot explain with "PING".
When looking at the output below notice the ping count "2-4" they drop
by 1 second and then continue on a 2ms path. It does not happen all the
time, Im running a check every 5 minutes, some days I get nothing and
then some days I get flooded, all with the same result of the 2nd ping
at ex.. 5132ms, 3rd ping at 4132, 4th ping at 3132, 5th ping at 2132ms,
6th ping at 1132ms, 7th ping at 132ms and then 2ms there after. Does
anyone have a clue what is causing this? I have only seen this on
Solaris and not on other operating systems. This particular pod has all
3 O/S's and only the Solaris boxes do this. By they way, all servers
are on the same vlan in this case pinging their default gateway, a
pingable VRRP address on the firewall. I have 2 example below from about
500 in my inbox over the past month or 2. I have also changed the times
of the "ping" via cron from 5 minutes to 8 minutes to 3 minutes thinking
it may be arp but it does not seem to be the case. The servers are
plugged into Cisco 2948's.
-----Original Message-----
From: Super-User
Sent: Tuesday, January 06, 2004 11:22 PM
To:
Subject: check to gw/fw (172.25.0.18) max ping = 3452
PING 172.25.0.18: 60 data bytes
68 bytes from 172.25.0.18: icmp_seq=0. time=3. ms
68 bytes from 172.25.0.18: icmp_seq=1. time=3452. ms
68 bytes from 172.25.0.18: icmp_seq=2. time=2453. ms
68 bytes from 172.25.0.18: icmp_seq=3. time=1453. ms
68 bytes from 172.25.0.18: icmp_seq=4. time=453. ms
68 bytes from 172.25.0.18: icmp_seq=5. time=2. ms
68 bytes from 172.25.0.18: icmp_seq=6. time=2. ms
68 bytes from 172.25.0.18: icmp_seq=7. time=2. ms
68 bytes from 172.25.0.18: icmp_seq=8. time=3. ms
68 bytes from 172.25.0.18: icmp_seq=9. time=2. ms
PING 172.25.0.18: 60 data bytes
68 bytes from 172.25.0.18: icmp_seq=0. time=3. ms
68 bytes from 172.25.0.18: icmp_seq=1. time=4023. ms
68 bytes from 172.25.0.18: icmp_seq=2. time=3023. ms
68 bytes from 172.25.0.18: icmp_seq=3. time=2023. ms
68 bytes from 172.25.0.18: icmp_seq=4. time=1023. ms
68 bytes from 172.25.0.18: icmp_seq=5. time=24. ms
68 bytes from 172.25.0.18: icmp_seq=6. time=2. ms
68 bytes from 172.25.0.18: icmp_seq=7. time=2. ms
68 bytes from 172.25.0.18: icmp_seq=8. time=2. ms
68 bytes from 172.25.0.18: icmp_seq=9. time=2. ms
----172.25.0.18 PING Statistics----
120 packets transmitted, 120 packets received, 0% packet loss round-trip
(ms) min/avg/max = 2/67/3452
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