vty 0 15 means vty lines 0 to 15 inclusive. Any commants you enter after that will be applied to all 16 of those lines.
However, when you show an IOS configuration, it shows vty lines 0 to 4 seperately from lines 5 to 15, even if the configurations on the two ranges are identical. Not sure why, but it has always done that.
For example, if you do line vty 5 7 and you enter some (different) commands, you will get three blocks in config: line vty 0 4, then line vty 5 7, then line vty 8 15. That is, it groups them together if it can, except that lines vty 0 to 4 are kept seperate from the rest.
It is only cosmetic.
Kevin Dorrell
Luxembourg
