Routing Policy
Hello, I received a project from the managment team. Please see the diagram. They want the network traffic between host A and B always cross the T1 line between R1 and R2. Host A connects to Internet through ISP1, host B connects to Internet through ISP2. There is T1 line between router R1 and R2, which is inside the Internet. __ Host A |--ISP1 R1---T1-- R2 ISP2 --|-- Host B |Internet_| I have full control of router R1 and R2, host A and B, but have no control over ISP1 and ISP2. I am not sure what is the best way to setup this kind routing policy. Anybody has any experience/ideas, please shed some lights here. Thanks! Roger Lu ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Routing Policy
Use Policy Based routing, or Route Maps... Here is a example let's assume the following is correct. Host A: 10.1.1.10 Host B: 192.168.16.10 T1 r1 serial: 10.1.2.1 r2 serial: 192.168.15.1 Router 1: access-list 110 permit ip host 10.1.1.10 host 192.168.16.10 route-map T1 permit 10 match ip address 110 set ip next-hop 192.168.15.1 then you have the oppposite on Router 2: access-list 110 permit ip host 192.168.16.10 host 10.1.1.10 route-map T1 permit 10 match ip address 110 set ip next-hop 10.1.2.1 This is from memory so don't get made if it is a little off... If I am understanding you correctly this will do what you want... -chris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Roger Lu Sent: Thursday, May 25, 2000 8:37 PM To: [EMAIL PROTECTED] Subject: Routing Policy Hello, I received a project from the managment team. Please see the diagram. They want the network traffic between host A and B always cross the T1 line between R1 and R2. Host A connects to Internet through ISP1, host B connects to Internet through ISP2. There is T1 line between router R1 and R2, which is inside the Internet. __ Host A |--ISP1 R1---T1-- R2 ISP2 --|-- Host B |Internet_| I have full control of router R1 and R2, host A and B, but have no control over ISP1 and ISP2. I am not sure what is the best way to setup this kind routing policy. Anybody has any experience/ideas, please shed some lights here. Thanks! Roger Lu ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Routing Policy
Chris, Thanks for your help. You have solved half of my problem. The other half problem I have is how to let host A forward packet to router R1 when A needs send packet to B, and how to let host B to forward packet to router R2 when B needs send packet to A. Because ISP1 and ISP2 may choose other paths(which could bypass T1 between R1 and R2) for traffic between A and B. Roger -Original Message- From: Chris Allen [mailto:[EMAIL PROTECTED]] Sent: Friday, May 26, 2000 5:47 AM To: Roger Lu; [EMAIL PROTECTED] Subject: RE: Routing Policy Use Policy Based routing, or Route Maps... Here is a example let's assume the following is correct. Host A: 10.1.1.10 Host B: 192.168.16.10 T1 r1 serial: 10.1.2.1 r2 serial: 192.168.15.1 Router 1: access-list 110 permit ip host 10.1.1.10 host 192.168.16.10 route-map T1 permit 10 match ip address 110 set ip next-hop 192.168.15.1 then you have the oppposite on Router 2: access-list 110 permit ip host 192.168.16.10 host 10.1.1.10 route-map T1 permit 10 match ip address 110 set ip next-hop 10.1.2.1 This is from memory so don't get made if it is a little off... If I am understanding you correctly this will do what you want... -chris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Roger Lu Sent: Thursday, May 25, 2000 8:37 PM To: [EMAIL PROTECTED] Subject: Routing Policy Hello, I received a project from the managment team. Please see the diagram. They want the network traffic between host A and B always cross the T1 line between R1 and R2. Host A connects to Internet through ISP1, host B connects to Internet through ISP2. There is T1 line between router R1 and R2, which is inside the Internet. __ Host A |--ISP1 R1---T1-- R2 ISP2 --|-- Host B |Internet_| I have full control of router R1 and R2, host A and B, but have no control over ISP1 and ISP2. I am not sure what is the best way to setup this kind routing policy. Anybody has any experience/ideas, please shed some lights here. Thanks! Roger Lu ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
ASN -- Unique routing policy [7:12267]
Please pardon another newbie question. But to get an ASN from ARIN, we need, not only to be mulithomed, but also to explain that we have a "unique routing policy" that differs from that of our provider. Does simply having 2 different providers with whom we intend to do BGP peering for redundancy & load sharing constitute a "unique routing policy"? Or is there something else that ARIN is looking for? Thanks! -- Daniel Wilson CompuSoft Solutions and The Worthwhile Company http://www.worthwhile.com Your complete e-business solution partners. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12267&t=12267 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ASN -- Unique routing policy [7:12267]
If you're multihomed and your BGP advertisement policy differs from your providers--which it will--then you'll have no problem getting an ASN. If you are advertising only your assigned addresses, then your policy is obviously different than your providers and it requires a unique ASN. HTH, John >>> "Daniel Wilson" 7/13/01 8:05:58 AM >>> Please pardon another newbie question. But to get an ASN from ARIN, we need, not only to be mulithomed, but also to explain that we have a "unique routing policy" that differs from that of our provider. Does simply having 2 different providers with whom we intend to do BGP peering for redundancy & load sharing constitute a "unique routing policy"? Or is there something else that ARIN is looking for? Thanks! -- Daniel Wilson CompuSoft Solutions and The Worthwhile Company http://www.worthwhile.com Your complete e-business solution partners. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12271&t=12267 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ASN -- Unique routing policy [7:12267]
Thanks. That's what I needed to know. -- Daniel Wilson CompuSoft Solutions and The Worthwhile Company http://www.worthwhile.com Your complete e-business solution partners. ""John Neiberger"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > If you're multihomed and your BGP advertisement policy differs from your > providers--which it will--then you'll have no problem getting an ASN. > If you are advertising only your assigned addresses, then your policy is > obviously different than your providers and it requires a unique ASN. > > HTH, > John > > >>> "Daniel Wilson" 7/13/01 8:05:58 AM >>> > Please pardon another newbie question. But to get an ASN from ARIN, > we > need, not only to be mulithomed, but also to explain that we have a > "unique > routing policy" that differs from that of our provider. > > Does simply having 2 different providers with whom we intend to do BGP > peering for redundancy & load sharing constitute a "unique routing > policy"? > Or is there something else that ARIN is looking for? > > Thanks! > > -- > Daniel Wilson > CompuSoft Solutions and The Worthwhile Company > http://www.worthwhile.com > Your complete e-business solution partners. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12272&t=12267 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ASN -- Unique routing policy [7:12267]
David, Search the archives.. Howard answered this question on numerous occasions so there should be a lot good info there. Nigel. >From: "Daniel Wilson" >Reply-To: "Daniel Wilson" >To: [EMAIL PROTECTED] >Subject: ASN -- Unique routing policy [7:12267] >Date: Fri, 13 Jul 2001 10:05:58 -0400 > >Please pardon another newbie question. But to get an ASN from ARIN, we >need, not only to be mulithomed, but also to explain that we have a "unique >routing policy" that differs from that of our provider. > >Does simply having 2 different providers with whom we intend to do BGP >peering for redundancy & load sharing constitute a "unique routing policy"? >Or is there something else that ARIN is looking for? > >Thanks! > >-- >Daniel Wilson >CompuSoft Solutions and The Worthwhile Company http://www.worthwhile.com >Your misconduct and Nondisclosure violations to [EMAIL PROTECTED] Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12277&t=12267 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
