I had the same issue. It's due to the fact that NTOP was not made to handle huge amounts of data. I ran ntop on a network running 15Mbps of traffic and 70,000 open tcp connections and had the same problem. Luca said he's working on the issue. I can usually hit this hard limit in about 5 minutes during business hours on our enterprise network (15 minutes after biz hours). The only workaround I've found that works is to restrict yourself to monitoring subnets with the net filter.
Dan Norton Network Administrator WareNet [EMAIL PROTECTED] (949) 417 - 2300 x 2360 (888) 927 - 3329 (Fax) WebSite Development, Web Hosting, Connectivity, Colocation aim: deveyn > -----Original Message----- > From: Burton M. Strauss III [mailto:[EMAIL PROTECTED]] > Sent: Thursday, January 24, 2002 2:13 PM > To: [EMAIL PROTECTED] > Subject: RE: [Ntop] hash errors > > > Try it and see :-) > > As a guess... if your basic integer is 16 bits, then it won't > work (then > maxint = 32767). For most platforms, int (u_int, et al) are > 32 bits and it > should work. > > Honestly, I haven't done any real analysis - you might grep > for any short > integers, but I don't remember seeing any in places that would hurt... > > -----Burton > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > [EMAIL PROTECTED] > Sent: Thursday, January 24, 2002 10:45 AM > To: [EMAIL PROTECTED] > Subject: [Ntop] hash errors > > > I got the following two errors from ntop: > > WARNING: unable to further extned TCP hash [actual size: 32768] > Unable to extend the hash: hard limit (32768) reached > > Is this something I can just change the #define in the source > to 65536, or > is there a reason I shouldn't do this? > > Thanks > > Jason > > _______________________________________________ > Ntop mailing list > [EMAIL PROTECTED] > http://listmanager.unipi.it/mailman/listinfo/ntop > > _______________________________________________ > Ntop mailing list > [EMAIL PROTECTED] > http://listmanager.unipi.it/mailman/listinfo/ntop > _______________________________________________ Ntop mailing list [EMAIL PROTECTED] http://listmanager.unipi.it/mailman/listinfo/ntop
