[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

3204.0. "status/counter information" by MSE1::RAO () Thu Jan 25 1996 11:46

    
    
    
    In a DecHub900 if each device does not have IP address of its own
    you can still look at all port status/counter information using
    hubwatch..
    
    but if you use SNMP command "snmpwalk" to walk thro' the dechub900
    it does not show any port/status information of each device and device
    ports. You can get this information only if you snmpwalk on the
    device itself, which means each device have its own IP address
    
    
    my question is what mechanism is used in hubwatch to get all the 
    status/counters information of each device in a hub which does not
    have its own IP address.
    
    Thanks in advance
    Radha
    
    
T.RTitleUserPersonal
Name
DateLines
3204.1NETCAD::DRAGONThu Jan 25 1996 12:396
    Radha,
    
    	Use the slot community string (ie public-6 for slot 6, etc.) and
        the hub's IP address.
    
    Bob
3204.2Community String MultiplexingNETCAD::GALLAGHERFri Jan 26 1996 10:4815
Adding just a bit to what Bob said....

The mechanism is called community-string multiplexing.  The MAM's community
is, by default, "public" and all DEChub900 modules (except the DECserver900TM)
are manageable by sending messages to the MAM using community strings:
"<mam community string>-<slot number>" (e.g. "public-6" for the module in
slot 6).

This allows you to manage the hub using only one IP address.

What going on internally is that SNMP messages are being translated by the
MAM and sent to the appropriate modules.  The modules replies are then 
translated back into SNMP and relayed back to the Network Management Station.

						-Shawn