ADC SWD4573I1 Manuale Utente

The Avidia system automatically creates two dedicated management PVCs to Megabit Modems 
700F, 600F, and 500L. SNMP requests are sent to the Avidia system from an NMS/EMS. When 
the Avidia system receives the SNMP request, it either responds or forwards depending on 
the value of the community string (see the 

 section below). See 

 for information on setting up a 

system for inband management.

With the inband management of modems, SNMP requests are made from the NMS/EMS over 
the xDSL port connection to the modem. The Avidia system acts as a proxy agent for the SNMP 
request to the modem. The SNMP request from the NMS/EMS to the Avidia system 
must include:

the IP address for the Avidia system

an Object ID (OID) for the modem (rather than the OID for the Avidia system)

the slot and port of the channel card where the modem is attached appended to the 
community string, (for example, public:4.2)

The modified community string enables the Avidia system to recognize that the request is 
destined for a specific modem, and to forward the request to the appropriate channel 
card port.

For modems, inband management provides the ability to:

configure or change WAN, LAN, and system parameters

collect statistics (status and performance history from both the LAN and WAN interfaces)

troubleshoot

 for information on how to set up access to modems for 

inband management.