[SNMP4J] Pulling Router tables via SNMP

[Rory Marquis]

Hi there

Im not sure if what you are asking would be posssible in the way that you 
might be thinking.  (Although I am sure that someone will correct me if I am 
worg.

The only way that a router that supports SNMP could tell you the routing 
tables would be if it had a MIB that would provide you with this 
information.

You said that you have read the RFC, and I agree at first they are difficult 
to follow. The thing is there might be LOTS of RFCs for the MIBs of your 
routers/switches there also might be private MIBs for the routers that are 
manufacture specific (in fact i can guraentee that there are).

My advice to you is to do some more research. Start small just by using an 
OID from something like the HOST-RESOURCES-MIB or the SNMPv2-MIB or 
something like that and throw it at the router to see if it A: implements 
SNMP (some don't, honest) and B: that you can talk to it.  Then what I would 
do is download the MIB from the RFC and parse it using something like Mibble 
http://www.mibble.org/. There is an excellent tool that the Mibble folks 
have created which will parse MIBs for you, and send SNMP messages... it's a 
good tool to use if you are just playing around.

Then I would go searching for more MIB information regarding your specific 
Routers. If they are Cisco you are in luck, take a look in the Mib Depot 
http://www.mibdepot.com/index.shtml

HTH

Cheers
Rory