User`s manual

P-660 Series Support Notes

The SNMP PDU contains the following fields:

• PDU type Specifies the type of PDU.

• Request ID Associates requests with responses.

• Error status Indicates an error and an error type.

• Error index Associates the error with a particular object variable.

• Variable-bindings Associates particular object with their value.

• ZyXEL SNMP Implementation

ZyXEL currently includes SNMP support in some P-660 routers. It is implemented

based on the SNMPv1, so it will be able to communicate with SNMPv1 NMSs.

Further, users can also add ZyXEL's private MIB in the NMS to monitor and control

additional system variables. The ZyXEL's private MIB tree is shown in figure 3. For

SNMPv1 operation, ZyXEL permits one community string so that the router can

belong to only one community and allows trap messages to be sent to only one NMS

manager.

Some traps are sent to the SNMP manager when anyone of the following events

happens:

1. coldStart (defined in RFC-1215) :

If the machine coldstarts, the trap will be sent after booting.

1. warmStart (defined in RFC-1215) :