Ethereal-users: Re: [Ethereal-users] Switched network best approch

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From: Dario Ciccarone <dciccaro@xxxxxxxxxxxx>
Date: Sat, 22 Jan 2005 21:33:25 -0300 (ART)
Simone:
 
what is 'a whole switched network' ? Does that mean to connect ethereal to a switch port & sniff traffic from another switch? if that is so, you will need something like Cisco's RSPAN
 
with regards to APR: APR is not a protocol, but a trick - an interesting & cunning trick, but which shouldn't be used as 'the' method to sniff on a switch - it can produce unpredictable results on end hosts, overload the machine doing the sniffing, and cause network outages.
 
Try to use the standard procedure to sniff on a switch (monitoring traffic to a monitor port). Only if your switch does NOT support this feature I would use something like APR - which is not supported on ethereal
 
Dario

Simone Chemelli <Simone.Chemelli@xxxxxxxxx> wrote:

I need to sniff a whole switched network.

I would like if the just released 0.10.9 version is aware of the APR protocol like http://www.oxid.it/ca25um/topics/sniffer.htm in roder to handle also networks with switches instead of hubs.

Regards,

Simone Chemelli
System integration

Serenissima Informatica S.p.a.                
Via Croce Rossa 5 - 35129 Padova - Italy
Tel.  +39 049 8291111
Fax  +39 049 8291209

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