[c-nsp] VLSM <-> Cisco ACL <-> Extended ACL format table?

[Hank Nussbacher]

At 08:15 AM 23-12-07 -0500, Eric Van Tol wrote:

Thanks.  I might HTML later this week unless someone else has it online 
someplace.

-Hank

> > -----Original Message-----
> > From: cisco-nsp-bounces at puck.nether.net
> > [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Hank
> > Nussbacher
> > Sent: Sunday, December 23, 2007 7:32 AM
> > To: cisco-nsp at puck.nether.net
> > Subject: [c-nsp] VLSM <-> Cisco ACL <-> Extended ACL format table?
> >
> > Can anyone point me at a table which shows the 3 different
> > formats of VLSM
> > (/14) vs Cisco ACL (0.3.255.255) vs Cisco Extended ACL
> > (255.252.0.0) all in
> > one neat table?
>
>Like this one?  (formatting may be off)
>
>
>IP block        Notation        Subnet mask     Inverse mask
>1       /32 (single)    255.255.255.255 0.0.0.0
>2       /31     255.255.255.254 0.0.0.1
>4       /30     255.255.255.252 0.0.0.3
>8       /29     255.255.255.248 0.0.0.7
>16      /28     255.255.255.240 0.0.0.15
>32      /27     255.255.255.224 0.0.0.31
>64      /26     255.255.255.192 0.0.0.63
>128     /25     255.255.255.128 0.0.0.127
>256     /24     255.255.255.0   0.0.0.255
>256 * 2         /23     255.255.254.0   0.0.1.255
>256 * 4         /22     255.255.252.0   0.0.3.255
>256 * 8         /21     255.255.248.0   0.0.7.255
>256 * 16        /20     255.255.240.0   0.0.15.255
>256 * 32        /19     255.255.224.0   0.0.31.255
>256 * 64        /18     255.255.192.0   0.0.63.255
>256 * 128       /17     255.255.128.0   0.0.127.255
>65,536  /16     255.255.0.0     0.0.255.255
>65,536 * 2      /15     255.254.0.0     0.1.255.255
>65,536 * 4      /14     255.252.0.0     0.3.255.255
>65,536 * 8      /13     255.248.0.0     0.7.255.255
>65,536 * 16     /12     255.240.0.0     0.15.255.255
>65,536 * 32     /11     255.224.0.0     0.31.255.255
>65,536 * 64     /10     255.192.0.0     0.63.255.255
>65,536 * 128    /9      255.128.0.0     0.127.255.255
>16,777,216      /8      255.0.0.0       0.255.255.255
>16,777,216 * 2  /7      254.0.0.0       1.255.255.255
>16,777,216 * 4  /6      252.0.0.0       3.255.255.255
>16,777,216 * 8  /5      248.0.0.0       7.255.255.255
>16,777,216 * 16 /4      240.0.0.0       15.255.255.255
>16,777,216 * 32 /3      224.0.0.0       31.255.255.255
>16,777,216 * 64 /2      192.0.0.0       63.255.255.255
>16,777,216 * 128        /1      128.0.0.0       127.255.255.255
>Default Route   /0      0.0.0.0         255.255.255.255
>
>-evt