Trap Server Cannot Receive Trap Packets from the Switch

1. Check whether you configured the trap server correctly on the switch:

   show snmp-server host

2. Check whether a firewall exists between the switch and the trap server.

Example

Check whether you configured the trap server correctly on the switch:

Switch:1>enable
Switch:1#show snmp-server host

================================================================================
                              Notify Configuration
================================================================================
Notify Name                      Tag                              Type
--------------------------------------------------------------------------------
Inform                           informTag                        inform
Trap                             trapTag                          trap


================================================================================
                          Notify Profile Configuration
================================================================================
Params Name                      Profile Name
--------------------------------------------------------------------------------
AuthNoPriv-md5                   profile2
AuthPriv-md5                     profile3
NoAuthNoPriv-md5                 profile1


================================================================================
                          Target Address Configuration
================================================================================

Target Name                      TDomain   TAddress                 TMask

--------------------------------------------------------------------------------
4c20cc369925edbd1fe3cf8e2584c498 ipv4      47.17.142.155:162

55fca382ffba169e986783bbbdedc334 ipv4      47.17.143.57:162



================================================================================
                          Target Address Configuration
================================================================================
Target Name                      Timeout Retry TagList
Params                           MMS
--------------------------------------------------------------------------------
4c20cc369925edbd1fe3cf8e2584c498 1500    3     trapTag
4c20cc369925edbd1fe3cf8e2584c498 484
55fca382ffba169e986783bbbdedc334 1500    3     trapTag
55fca382ffba169e986783bbbdedc334 484

================================================================================
                          Target Params Configuration
================================================================================
Target Name                      MP Model  Security Name                    Sec
Level
--------------------------------------------------------------------------------
4c20cc369925edbd1fe3cf8e2584c498 snmpv1    readview                         noAu
thNoPriv
55fca382ffba169e986783bbbdedc334 snmpv2c   secret                           noAu
thNoPriv
TparamV1                         snmpv1    readview                         noAu
thNoPriv
TparamV2                         snmpv2c   readview                         noAu
thNoPriv