Simple Network Management Protocol (SNMP) is a standard network protocol for remote monitoring and managing devices in the same network, such as computers, switches, and gateways. The SNMP architecture includes the following components:

• SNMP Managers

• Master agents

• Subagents

Agents

An SNMP agent is a software module that responds to SNMP queries to provide status and statistics about a network node. The AE Services server contains an SNMP agent which supports SNMP protocol versions 1, 2c, and 3. Agent hierarchy consists of a master agent and subagents. Each managed workstation that includes a managed component must have a master agent. Each workstation can have a different master agent. A subagent is a software application that provides information to a master agent. When the master agent receives an SNMP request, it can route parts of the request to subagents. The subagents then return a response to the agent. SNMP managers can only see the master agent.

Managers

An SNMP manager, or a Network Management System (NMS), uses SNMP to monitor and manage a group of hosts or devices in the same network. The manager sends requests to SNMP agents on managed devices and receives SNMP notifications from SNMP agents to get the device status. For AE Services, SNMP managers are the following:

• Avaya Secure Services Gateways (SSG)

• Avaya Secure Access Link (SAL)

• Network Management System (NMS) devices. For example, IBM Tivoli or HP OpenView.