Re: Removing stuff from our router [7:44839]
Removing the route map and as-path filters will work the way you have it (if you do "no route-map MyISP-In" it will remove the entire route-map), but you should also remove the neighbor statements in your config. that reference these things. By looking at the configs., I'm assuming this is in a lab environment and not a real implementation. permit ^$ is simply permitting an empty as path. In other words, only routes originating in the local AS will be permitted. It's a common way to ensure that your AS does not become transit for somebody else's traffic. permit ^[0-9]* is a little more complicated. This statement is saying to permit zero or more instances of a number between 0 and 9. Do a search on CCO for AS path filters and you should find some good info. to help you on your way. HTH, Scott CCIE #9340 ""Anil Gupte"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > To remove this: > > route-map MyISP-In permit 10 > match as-path 6 > set local-preference 200 > > Do I just do this?: > no route-map MyISP-In permit 10 > > Also, to remove: > ip as-path access-list 1 permit ^[0-9]* > ip as-path access-list 2 permit ^$ > ip as-path access-list 3 permit ^1234$ > ip as-path access-list 3 permit ^1234_[0-9]*_[0-9]*$ > > Do I just?: > no ip as-path access-list 1 permit ^[0-9]* > no ip as-path access-list 2 > no ip as-path access-list 3 > > > Also what is that "permit ^$" and "permit ^[0-9]*" for? What does it do? > > Thanx for the help. > > Anil Gupte Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44846&t=44839 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Removing stuff from our router [7:44839]
Yes, that will remove the route-map. The ip as-path access-list "stuff" are called regular expressions. If you are running BGP on this router, I would Highly recommend leaving this stuff alone. You really need to provide more information about what this router is doing and include its config ( sans PW'D and use xxx's for IP's ) That ip as-path access-list is most likely restricting the propagation of BGP paths through your network. If this is an edge router that is receiving the full internet routes ( 115K as of yesterday ), this *could* be setup to restrict to certain ones only. If you have a downstream neighbor that is using you as a transit AS, these are most likely the ASN's that they are reaching through you. These would allow ASN's : 1-9,blank(internal routes) and ( I think...) 123400-123499, although Im not sure on the last one without my reference book in front of me. Thanks Larry -Original Message- From: Anil Gupte [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 23, 2002 11:04 AM To: [EMAIL PROTECTED] Subject: Removing stuff from our router [7:44839] To remove this: route-map MyISP-In permit 10 match as-path 6 set local-preference 200 Do I just do this?: no route-map MyISP-In permit 10 Also, to remove: ip as-path access-list 1 permit ^[0-9]* ip as-path access-list 2 permit ^$ ip as-path access-list 3 permit ^1234$ ip as-path access-list 3 permit ^1234_[0-9]*_[0-9]*$ Do I just?: no ip as-path access-list 1 permit ^[0-9]* no ip as-path access-list 2 no ip as-path access-list 3 Also what is that "permit ^$" and "permit ^[0-9]*" for? What does it do? Thanx for the help. Anil Gupte Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44848&t=44839 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Removing stuff from our router [7:44839]
No, this is a real implementation on our network. Since I am not even a CCNA yet (maybe in a couple of weeks), I wanted to make sure I would not break something. I just substituted names and AS numbers. I am hopefully going to take advanced routing and learn more about the BGP soon after my test. Thanx, Anil Gupte - Original Message - From: "Scott H." To: Sent: Thursday, May 23, 2002 12:09 PM Subject: Re: Removing stuff from our router [7:44839] > Removing the route map and as-path filters will work the way you have it (if > you do "no route-map MyISP-In" it will remove the entire route-map), but you > should also remove the neighbor statements in your config. that reference > these things. By looking at the configs., I'm assuming this is in a lab > environment and not a real implementation. > > permit ^$ is simply permitting an empty as path. In other words, only > routes originating in the local AS will be permitted. It's a common way to > ensure that your AS does not become transit for somebody else's traffic. > > permit ^[0-9]* is a little more complicated. This statement is saying to > permit zero or more instances of a number between 0 and 9. Do a search on > CCO for AS path filters and you should find some good info. to help you on > your way. > > HTH, > Scott > CCIE #9340 > > ""Anil Gupte"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > To remove this: > > > > route-map MyISP-In permit 10 > > match as-path 6 > > set local-preference 200 > > > > Do I just do this?: > > no route-map MyISP-In permit 10 > > > > Also, to remove: > > ip as-path access-list 1 permit ^[0-9]* > > ip as-path access-list 2 permit ^$ > > ip as-path access-list 3 permit ^1234$ > > ip as-path access-list 3 permit ^1234_[0-9]*_[0-9]*$ > > > > Do I just?: > > no ip as-path access-list 1 permit ^[0-9]* > > no ip as-path access-list 2 > > no ip as-path access-list 3 > > > > > > Also what is that "permit ^$" and "permit ^[0-9]*" for? What does it do? > > > > Thanx for the help. > > > > Anil Gupte Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44862&t=44839 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Removing stuff from our router [7:44839]
I wouldn't suggest playing with this until you really understand what you are doing. You could do some major damage to your network. ""Anil Gupte"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > No, this is a real implementation on our network. Since I am not even a > CCNA yet (maybe in a couple of weeks), I wanted to make sure I would not > break something. I just substituted names and AS numbers. I am hopefully > going to take advanced routing and learn more about the BGP soon after my > test. > > Thanx, > Anil Gupte > > - Original Message - > From: "Scott H." > To: > Sent: Thursday, May 23, 2002 12:09 PM > Subject: Re: Removing stuff from our router [7:44839] > > > > Removing the route map and as-path filters will work the way you have it > (if > > you do "no route-map MyISP-In" it will remove the entire route-map), but > you > > should also remove the neighbor statements in your config. that reference > > these things. By looking at the configs., I'm assuming this is in a lab > > environment and not a real implementation. > > > > permit ^$ is simply permitting an empty as path. In other words, only > > routes originating in the local AS will be permitted. It's a common way > to > > ensure that your AS does not become transit for somebody else's traffic. > > > > permit ^[0-9]* is a little more complicated. This statement is saying to > > permit zero or more instances of a number between 0 and 9. Do a search on > > CCO for AS path filters and you should find some good info. to help you on > > your way. > > > > HTH, > > Scott > > CCIE #9340 > > > > ""Anil Gupte"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > To remove this: > > > > > > route-map MyISP-In permit 10 > > > match as-path 6 > > > set local-preference 200 > > > > > > Do I just do this?: > > > no route-map MyISP-In permit 10 > > > > > > Also, to remove: > > > ip as-path access-list 1 permit ^[0-9]* > > > ip as-path access-list 2 permit ^$ > > > ip as-path access-list 3 permit ^1234$ > > > ip as-path access-list 3 permit ^1234_[0-9]*_[0-9]*$ > > > > > > Do I just?: > > > no ip as-path access-list 1 permit ^[0-9]* > > > no ip as-path access-list 2 > > > no ip as-path access-list 3 > > > > > > > > > Also what is that "permit ^$" and "permit ^[0-9]*" for? What does it > do? > > > > > > Thanx for the help. > > > > > > Anil Gupte Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44878&t=44839 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
