A nice solution which I make use is:
a) install a SNMPD client on every box
/usr/ports/net/net-snmp
b) change the community string to something else than `public`
c) create sample config file for snmpd
d) install MRTG
/usr/ports/net/mrtg
e) Configure MRTG to be daemon and query every 5 minutes the SNMPD on all
the boxes.
f) If u like security :) use firewall to protect the SNMP port!
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I am using this setup on my local cluster. It works nicely!
p.s. Of course if u like something more thatn measuring bandwidth then u
can run a sniffer on every machine and forward the results to a main
server, or u could capture the packets in raw form in a file and another
workstation to be used to analyze these packets.
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