Proxy can be defined as an intermediately device, 
which plays the role of an agent in the Context of SNMP.It 
works as a Virtual LAN to the Devices Which are not having 
an Ethernet Inerface,Like MODEMS and Multiplexers.

       By using the SNMPPROXY we can Know the STATUS of 
these(MODEMS etc) devices.

  When an Agent performs PROXY role,it acs on the behalf of 
one or more other nodes.A NETWORK MANAGER that wishes ti 
obtain the information from or control the node 
communicates with the proxy agent.The proxy agent then 
translates the MANAGER's request to a form appropriate for 
the arget sysem and uses an appropriate nework management 
protocol to communicate with the target system.

SNMP Proxy agent requires only when network has SNMP V1 and 
V2 agents. SNMP V1 supports Get, GetNext, Set and trap. 
SNMP V2 supports Get, GetBulk, set, trap and Inform. When 
SNMP V2 Network management Service wants to get data from 
SNMP V1 device, it sends GetBulk message to Proxy agent. 
Proxy agent will translate the GetBulk request to GetNext 
request in order to get data from SNMP V1 agent