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Can you even ping the target from the new origin? This sounds like a
networking issue that is affecting MRTG and has nothing to do with MRTG
specifically.<br><br>
Ed<br><br>
<br>
At 01:52 PM 1/26/2007, Mersberger, Robert wrote:<br>
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<font face="Arial, Helvetica" size=2>I have 2 AS400 servers on
172.20.x.x/24 and 172.24.X X/24 subnets that I have been tracking with
mrtg with the server on a 172.18.x.x/24 subnet . Recently we upgraded to
the latest release of Mrtg and it was installed on a new subnet
172.31.16.x/22 and these two as400 servers stop communicating with mrtg
and cfgmaker. This is the error message that I get.<br>
</font><br>
<font face="Arial, Helvetica" size=2>? Is used to hide the real subnet
</font><br>
<font face="Arial, Helvetica" size=2>SNMP Error:</font> <br>
<font face="Arial, Helvetica" size=2>no response received</font> <br>
<font face="Arial, Helvetica" size=2>SNMPv1_Session (remote host:
"172.20.?.11" [172.20.?.11].161)</font> <br>
<font face="Arial, Helvetica" size=2>
community: "public"</font> <br>
<font face="Arial, Helvetica" size=2>
request ID: 614628054</font> <br>
<font face="Arial, Helvetica" size=2>
PDU bufsize: 8000 bytes</font> <br>
<font face="Arial, Helvetica" size=2>
timeout: 2s</font> <br>
<font face="Arial, Helvetica" size=2>
retries: 5</font> <br>
<font face="Arial, Helvetica" size=2>
backoff: 1)</font> <br>
<font face="Arial, Helvetica" size=2> at
/usr/bin/../lib/mrtg2/SNMP_util.pm line 490</font> <br>
<font face="Arial, Helvetica" size=2>SNMPGET Problem for ifInOctets.2
ifOutOctets.2 on public@172.20.?.11:::::1:v4only</font> <br>
<font face="Arial, Helvetica" size=2> at /usr/bin/mrtg line
2035</font> <br>
<font face="Arial, Helvetica" size=2>Thursday, 25 January 2007 at 17:00:
WARNING: skipping because at least the query for ifInOctets.2 on
172.20.?.11 did not succeed<br>
</font><br>
<font face="Arial, Helvetica" size=2>Thursday, 25 January 2007 at 17:00:
WARNING: no data for ifInOctets&ifOutOctets:public@172.20.?.11.
Skipping further queries for Ho<br>
</font><br>
<font face="Arial, Helvetica" size=2>st 172.20.?.11 in this round.</font>
<br><br>
<font face="Arial, Helvetica" size=2>I have done sniffer traces on this
activity and what I see looks like no response from server. In the
trace I see </font><br>
<font face="Arial, Helvetica" size=2>Snmp request </font><br>
<font face="Arial, Helvetica" size=2>Snmp response </font><br>
<font face="Arial, Helvetica" size=2>ICMP destination unreachable.</font>
<br><br>
<font face="Arial, Helvetica" size=2>I have verified the community string
and know that I can do an snmpwalk from servers on other subnets.</font>
<br>
<font face="Arial, Helvetica" size=2>I also check with the server owner
and had him verify that snmp on these servers were not setup to not allow
access from this subnet. I have other devices on this 172.24 and
172.20 subnet that are not causing problems only these two IBM
servers.<br>
</font><br>
<font face="Arial, Helvetica" size=2>Hope you can straighten be
out.</font> <br><br>
<br>
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