software wanted

[greg at bestnet.kharkov.ua (Gregory Edigarov)]

Hi everybody,

can anybody recomend a piece of software, that could "graph" a live
network scanning it via snmp.
requirements are:
1. must produce a text output suitable for postproduction. graphviz is
an ideal, xml - acceptable.
2. must use no external database i.e. have text config file. clean text
console, suitable to run as a cronjob.
3. must be able to work in heterogenous environment. 

thanks a lot in advance

-- 
With best regards,
	Gregory Edigarov