MIB scoping is a special case in which the SNMP proxy forwarder application can be emulated by a master agent application. If a subagent is dedicated completely to handling a specific MIB scope, you register a single SnmpProxy for that subagent at the root of the OID tree for that scope. Because there can be only one context per request, then all or none of the varbinds in the incoming request are passed to the SnmpProxy. In this case, the master agent application behaves similarly to a proxy forwarder application. The only difference is that it identifies the target agent with the context name contained in the request.