Go CCIE Go!! - A Cisco Certified Internetwork Expert

Hello Shine,
You’re right and as long as I understand the valid wildcards are : 1 3 7 15 31 63 127 and 255. So using a wild card of 12 is considered invalid?
Thanks, > From: shinepjoseph@iprimus.com.au> To: mike.haddad@hotmail.com; ccielab@groupstudy.com> Subject: RE: Multicast Grouping> Date: Sun, 30 Mar 2008 22:09:38 +1100> > Mike,> > Write them in binary.> 226 - 1110 0010> 12 - 0000 1100> > The possible combinations would be:> 1110 0010 - 226> 1110 0110 - 230> 1110 1010 - 234> 1110 1110 - 238> > So by having a mask of 12 you are are matching only above 4 addresses.> > HTH,> Shine> > > —–Original Message—–> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Mike> Haddad> Sent: Sunday, 30 March 2008 5:55 PM> To: ccielab@groupstudy.com> Subject: Multicast Grouping> > Hello,> > I still don’t understand why the below ACL can’t be grouped:> interface Loopback0> ip pim sparse-dense-mode> !> ip pim send-rp-announce Loopback0 scope 16 group-list 50> !> access-list 50 permit 226.0.0.0 1.255.255.255> access-list 50 permit 228.0.0.0 3.255.255.255> access-list 50 permit 232.0.0.0 3.255.255.255> access-list 50 permit 236.0.0.0 1.255.255.255> access-list 50 permit 238.0.0.0 0.255.255.255> > > Why can’t we group them as:> access-list 50 permit 226.0.0.0 12.255.255.255> > Thanks for the clarification,> > _________________________________________________________________> Enter the Hunt & you could win a 2008 Eclipse Spyder! Click here to enter!> http://g.msn.ca/ca55/213> >