Ok that's clear now !! thank you very much for your help.
""Kent Yu"" a icrit dans le message de news: [EMAIL PROTECTED] > Stephane, > > > As u said, ^(200)+$ will match my ASPATHs but not only ... > > I am afraid that was not what I said :) > > > However, when I configure it, this expression doesn't match ASPATH > prepended > > like "200 200 200" (but 200 is present !). The not prepended ASPATH (200 > > only) is matched. I don't understand this behavior. > > > > As I said, ^(200)+$ would match 200 ONLY, we only have 2 bytes for the > as-number, 200200 will not show up in a router. > > When you give IOS "200 200 200", it sees the spaces between the numbers, > ^(200)+$ tells it to match some 200s without anything else in between them, > space is something. > Since you have ^ and $, it can not have anything before and after these 200s > either. > After reading the first 200, it expects the next thing is either 2 or end of > line, but it sees the space following the first 200 in "200 200 200", > that's a no-no. > > Kent > > > > ""Kent Yu"" a icrit dans le message de news: > > [EMAIL PROTECTED] > > > Stephane, > > > > > > ^(200)+$ matches 200 or 200200 etc.. Of course, in case of as-path, it > > > will only find 200. > > > > > > You want to use _ to match the space between the as-nums, so IOS will > try > > to > > > match the whole as-path. > > > > > > HTH > > > Kent > > > ""Stephane Litkowski"" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Hi all, > > > > > > > > I'm trying to find a regexp to match AS PATH including AS200 only, but > > > AS200 > > > > can be contained more than one time (AS PATH prepending). > > > > Example : > > > > 200 -> Match > > > > 200 200 -> Match > > > > 200 200 200 -> Match > > > > 200 200 200 300 -> Don't Match > > > > > > > > I tried to use this regexp : ^(200)+$ but it doesn't work, why ? > > > > However, the regexps : ^(200_)+$ seems to work. > > > > > > > > Can someone explain me why the first regexp doesn't work ? > > > > > > > > thanks. > > > > > > > > Stephane Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=53992&t=53956 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
