Aye - quite ugly - but working. I dont see any DLT type reported when I turned on -K and -t 4.
-wP --- Burton Strauss <[EMAIL PROTECTED]> wrote: > So the DLT messages are reporting this still as > 10Base-T ( DLT: Device 1 > [eth2] is 1, mtu 1514, header 14 )??? > > That's ugly because there's then no way to tell them > apart... > > -----Burton > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of frank rizzo > Sent: Thursday, April 07, 2005 3:38 PM > To: [email protected] > Subject: [Ntop-dev] RE: [Ntop] Jumbo frame support > question > > I changed the mtu for the EN10MB DLT type in > globals-core.c table to 9000 as > you described: > > _mtuSize[DLT_EN10MB] = 9000; > > Its a kludge but works for me (my C is weak sauce). > Gig ints are now happily plugging away without > too-large packet warnings. > > Thanks! > > -wP > > > --- Burton Strauss <[EMAIL PROTECTED]> wrote: > > The FAQ is in the source, and also available > HTMLized through About | > > Help. > > > > There is no explicit support. To the extent jumbo > frames are just > > large Ethernet frames, ntop will work. > > > > First, let's move this to ntop-dev... > > > > The code to handle "DLT" (Data Link Type) is > largely in pbuf.c, > > although the table is in globals-core.c. > > > > > > The mtu table is set in initNtopGlobals(), look > for > > _mtu: > > > > { int ii; > > for (ii=0; ii<MAX_DLT_ARRAY; ii++) { > > _mtuSize[ii] = CONST_UNKNOWN_MTU; > > _headerSize[ii] = 0; > > } > > } > > > > _mtuSize[DLT_NULL] = 8232 > > > /* no > > link-layer encapsulation */; > > _headerSize[DLT_NULL] = CONST_NULL_HDRLEN; > > > > So we need to figure out the values. > > > > Run ntop w/ -t 4 (trace level 4) and grep out the > > DLT: messages, e.g.: > > > > Apr 1 14:39:21 tigger ntop[2434]: DLT: Device 0 > > [eth1] is 1, mtu 1514, > > header 14 > > Apr 1 14:39:21 tigger ntop[2434]: DLT: Device 1 > > [eth2] is 1, mtu 1514, > > header 14 > > > > That will show how ntop is seeing the frames. It > > may simply be a matter of > > increasing the mtu upper value, or it may be > another > > ethertype, which will > > require coding in pbuf.c > > > > > > -----Burton > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > frank rizzo > > Sent: Friday, April 01, 2005 4:39 PM > > To: [email protected] > > Subject: [Ntop] Jumbo frame support question > > > > I am relatively new to ntop and this list, so I > > apologize if this is > > something that has been covered (the FAQ site is > > also down apparently). > > > > I have a gig nic that I have enabled jumbo frames > on > > -- the specific application that I am working with > > consists primary of > > jumbo-frame multicast data. The MTU shows as 1500 > > in the ntop status -- my > > nic is set to 9000. I see no ability to change > this > > in the config of ntop. > > Am I missing something? Can ntop deal with jumbo > > frames? > > > > Thanks, > > > > -wP > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Personals - Better first dates. More second > > dates. > > http://personals.yahoo.com > > > > _______________________________________________ > > Ntop mailing list > > [email protected] > > http://listgateway.unipi.it/mailman/listinfo/ntop > > > > _______________________________________________ > > Ntop mailing list > > [email protected] > > http://listgateway.unipi.it/mailman/listinfo/ntop > > > > > > __________________________________ > Yahoo! Messenger > Show us what our next emoticon should look like. > Join the fun. > http://www.advision.webevents.yahoo.com/emoticontest > _______________________________________________ > Ntop-dev mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-dev > > _______________________________________________ > Ntop-dev mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-dev > __________________________________ Yahoo! Messenger Show us what our next emoticon should look like. Join the fun. http://www.advision.webevents.yahoo.com/emoticontest _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev
