Thanks Ricardo for the explanation it makes sense now.
however, I agree for the ACL range but what about the command match ip rtp 16384 16383 . it matches every even number in the RTP UDP range 16384 32767 right ? Thanks But the example are match ip 2010/12/17 Ricardo <[email protected]> > Nicolas, > > When working with ranges in a class map definition we define the starting > port number and the range of ports, ie 16384 as staring port and 16383 more > ports, that is up to port 32767. > > When using ACL we define a range: ie starting and ending port. > > Moreover when we work with ACL we define ANY traffic using UDP and with > class-maps only the RTP using UDP ports. > > To talk about something deeper however is that a good thing of ACL though > is that we have included RTCP (odd even port numbers) as well, not in the > class map matching RTP Only. > > //r.a. > > On Fri, Dec 17, 2010 at 6:25 AM, Nicolas MICHEL <[email protected]>wrote: > >> Hey there guys! >> >> I'm actually reading Cisco QoS Book from Wendell Odom and something is >> interesting here. >> >> They are using class-map like this to match ALL RTP traffic >> >> class-map RTP >> match ip rtp 16384 16383 >> >> >> Isn't that weird ? In most document I see that they use an ACL that match >> UDP 16384 to 32767 . >> >> >> Can someone have some hints about this ? >> >> >> many thanks for the help provided. >> >> >> >> Nicolas >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> > > -- Nicolas MICHEL Ingenieur Réseaux et Securité (CCNA/CCNP) _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
