Hi All,
I'm new member for the user group and need help!.
We have IBM NetView 7.1.3 on AIX as a SNMP Manager for all Interface up/down
SNMP polling and to receive SNMP traps. Now we have about 50 SuSe Linux 9/10
version servers.
Now the problem is,When we discover SuSe linux SNMP agents in NetView for SNMP
polling, the net-snmp agent gives weird results. NetView is discovering IP
addresses which are totally NOT related to the SuSe linux server. IBM & Novell
support researched and asked us to contact this group.This is
happening only on all SuSe Linux agents and rest other OS SNMP are perfectly
fine. Please let me know if any trace file is required. Any Help is really
appreciated.
Below is the explanation by support.
"The snmpwalk utility, either the one from NetView or the one from net-snmp
simply issues a series of getnext commands and the SNMP agent returns the data
in whatever order it wishes. The MIB-II tree is architected, so that part of
the MIB is always returned in the same order from all SNMP agents. That output
shows us what data is stored in the MIB. So the result is driven by the SNMP
agent and not the utility. So I expect the output to be the same with either
snmpwalk utility. This is not the problem, only the yardstick to measure the
MIB with.
The problem comes when the NetView netmon
daemon starts discovering the interfaces on the node. Netmon does not issue a
simple series of getnext commands because that would be slow. Instead netmon
issues several getnext instructions in a single SNMP request. It is
essentially pulling tables, row by row, from the MIB. It appears from the
netmon trace, that the SNMP agent is getting confused by the requests and not
returning the correct data from the ip table. I did not try to find out what
data from the MIB was actually being sent, or even if it was from the MIB. I
could tell by comparing it to the snmpwalk output that it was incorrect. "
Thanks,
Larry Fagan
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