Vin
Do you mean use them in access-lists ?
The above ranges are not contiguous so if you did summarise them they would include range not in the above list - is this acceptable ?
Even if it is acceptable you would still have more than one entry
10.91.96.0/20
10.91.112.0/22
but the above covers
10.91.96 -> 10.91.111.
&
10.91.112 -> 10.91.115.
You can break it down a bit more if needed but you will end up with more entries.
Jon
10.91.104.0/21
10.91.108.0/21
Jon