When a trap arrives, the trap exploder reads the uncommented FORWARD entries in the trapd.conf file to determine which destinations should receive the forwarded trap. When the criteria of the trap matches the criteria of a FORWARD entry, the trap exploder:
-
Translates the trap in accordance to Trap exploder translation of incoming traps to forwarded traps.
-
Sends a copy of the forwarded trap to each destination that is specified in the FORWARD entry.
| Incoming trap message version |
Forwarded trap message version |
Comments or conditions that require special processing |
|---|---|---|
| v1 |
v1 |
If the agent-addr field in an incoming trap is 0.0.0.0 (which indicates an invalid IPv4 address) and the source IP address in the IP packet header is IPv4, the adapter discards the trap. If the agent-addr field in an incoming trap is 0.0.0.0 and the source IP address in the IP packet header is IPv6, the adapter adds two VMware Smart Assurance private variable-bindings (varbinds) that are named smSnmpTrapInetAddressType and smSnmpTrapInetAddress to the varbind list of the forwarded trap. Together, the private varbinds hold the source IPv6 address of the original trap. |
| v2c |
v2c |
The adapter sets a standard varbind that is named snmpTrapAddress.0 to the value of the source IP address in the IP packet header:
|
| v3 |
The trap exploder forwards received SNMPv1 or v2c traps to the configured destinations irrespective of the traps’ community. The trap exploder does not authenticate SNMPv1 or v2c traps.
The trap exploder authenticates and decrypts received SNMPv3 traps, converts them to SNMPv2c traps, and forwards the SNMPv2c traps to the configured destinations. The trap exploder uses the authentication and privacy credentials that are obtained from a seed file to authenticate and decrypt SNMPv3 traps.
