I believe that I found one answer to my delima wrt the ifTable not being
refreshed when an interface goes away.
I found this excerpt from a Working Group Synopses, by Frank Kastenholz many
years back:
"A question regarding the ifTable in dynamic environments was asked. In some
environments, the number of interfaces can change without requiring the
management system to be re-initialized. This is a problem since the definitions
of ifNumber and ifIndex require that the ifTable be a fixed array. The response
suggested that the entries in the ifTable remain in existence but be removed
from all MIB views."
I must conclude that things haven't changed much. The ifTable does not get
updated when an interface (virtual in my case) goes away. Fortunately the
ifOperatingStatus does go into the "down" state.
Any further comments or insights are very welcome.
Judy Walker
From: Judith Walker [mailto:[email protected]]
Sent: Friday, November 05, 2010 4:22 PM
To: [email protected]
Subject: re-reading snmpd.conf file question
I'm finding that when reading the ifTable, some old deleted interfaces are
still around. So my snmpwalk of the IfTable is showing data that is
out-of-date. (By the way, ethtool does not seem to have this problem.) If I
look at the /var/lib/net-snmp/snmpd.conf file, it is correct. In other words,
the deleted interface is gone. How can I get the snmpd to re-read the
snmp.conf file. The ways mentioned for UCD snmp agents do not seem to work.
Can anyone help me?
Kill -HUP 22222 // does not work
snmpset
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