Cisco Cisco Email Security Appliance X1050 Troubleshooting Guide

Contributed by Nasir Shakour and Robert Sherwin, Cisco TAC
Engineers.
Jun 24, 2014

This document describes which Simple Network Management Protocol (SNMP) traps are supported by
AsyncOS.

The Cisco AsyncOS operating system supports system status monitoring via SNMP.  AsyncOS supports
SNMPv1, v2, and v3.

This includes Cisco's Enterprise Management Information Base (MIB), ASYNCOS−MAIL−MIB. The
ASYNCOS−MAIL−MIB helps administrators better monitor system health. In addition, this release
implements a read−only subset of MIB−II as defined in RFCs 1213 and 1907. (For more information on
SNMP, see RFCs 1065, 1066, and 1067.)

Please note:

SNMP is off by default.

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SNMP SET operations (configuration) are not implemented.

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The use of SNMPv3 with password authentication and DES Encryption is mandatory in order to
enable this service. (For more information on SNMPv3, see RFCs 2571−2575.) You are required to
set a SNMPv3 passphrase of at least eight characters in order to enable SNMP system status
monitoring. The first time you enter a SNMPv3 passphrase, you must reenter it to confirm. The
snmpconfig command remembers this phrase the next time you run the command.

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The SNMPv3 username is: v3get.

> snmpwalk −v 3 −l AuthNoPriv −u v3get −a MD5 ironport mail.example.com

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If you use only SNMPv1 or SNMPv2, you must set a community string. The community string does
not default to public.

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For SNMPv1 and SNMPv2, you must specify a network from which SNMP GET requests are
accepted.

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In order to use traps, an SNMP manager (not included in AsyncOS) must be running and its IP
address entered as the trap target. (You can use a hostname, but if you do, traps will only work if DNS
is working.)

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