SNMP Not Responding

[biskit]

Is anyone here good with SNMP?

I have 4 machines:

• SmartCenter (VM)
• SmartEvent (appliance)
• Firewall A
• Firewall B

SNMP is configured exactly the same on all boxes, and enabled.

SmartEvent and Firewall B work fine.  The monitoring system gets SNMP responses no problem.

SmartCenter and Firewall A do not.  

Netstat shows udp 0 0 0.0.0.0:161 0.0.0.0:* 12412/snmpd

If I tcpdump on either machine while testing I see tons of SNMP traffic hitting the box...  all the normal SNMP stuff, including the community string, etc.  But I never see return traffic back to the monitoring server.  It's like SNMP requests get to the box and vanish in to a black hole.  A "zdebug" on the gateway shows no related drops.  The cluster Active/Standby status has no bearing on the symptoms.

Any ideas?

Thanks,
Matt

[G_W_Albrecht]

I would involve TAC asap...