>With the advent of IOS 12.x wildcard bits must be contiguous from the right, >so you lose this kind of power. Also takes the fun out of the network >a.b.c.d x.x.x.x area command in OSPF!
I hadn't noticed that. If so, it would not surprise me at all if Cisco is planning, long-term, to have one kind of mask. It's not quite the same thing, but assume some feature is on by default. In general, defaults don't show up in the show running. If the Cisco plan is to change the default to "no foo", you'll see the pattern: 1. Before the decision to change: nothing displayed 2. For some releases after the decision: foo 3. After the change is made: no foo 4. Many releases after the change: nothing displayed > >BTW, Mark, I see these odd/even filtering questions in your study materials >and elsewhere. While I understand the goal of the exercise, it has always >struck me as a pretty bizarre premise. Where exactly in the real world is >there any design such that filtering by odd or even would be practical? Let >alone filtering by multiples of 4 or 8 or whatever? ( and yes, after two >runs through you know where, I fully appreciate that in some places, like >the brokerage firm where I used to work, there is very little relationship >between the requirements you are given and the real world ) > >Chuck > > > > >""Marc Russell"" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... >> Yes, it does make simple tasks a little more complicated. However, using >> inverse masking can make complex tasks much easier. >> >> Take this issue. Say you are asked to filter access to all odd 192.168.x.0 >> /24 routes. >> >> >> Your method. >> >> 192.168.1.0 255.255.255.0 >> 192.168.3.0 255.255.255.0 >> 192.168.5.0 255.255.255.0 >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30485&t=30473 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
