oh forgot one
http://www.nagios.org/
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Browse All TopicsDoes anyone using a network monitoring tool/software, free or not so expensive for multiple vlans auto discovery and displaying physical/logical network topology? I would like to get one which is easy to setup and can be configured for snmp traps and some threshold values for troubleshooting connectivity and improving network performance. Your help will be appreciated.
Thanks
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by: briancassinPosted on 2008-03-06 at 06:56:46ID: 21060687
You have a few options
ETHERAL/wireshark http://www.wireshark.org
NMAP http://namp.org
Netdisco http://www.netdisco.org/