Re: [c-nsp] BGP long prefix ads

2008-01-14 Thread Roman Bestuzhev
Hello All, Thanks for comments, will digg BGP communities. 2008/1/12, Jon Lewis [EMAIL PROTECTED]: On Fri, 11 Jan 2008, Roman Bestuzhev wrote: I am thinking about load balancing between both ISPs. I have read about a technique when you divide your block to several pieces, for example to

Re: [c-nsp] BGP long prefix ads

2008-01-12 Thread Jon Lewis
On Fri, 11 Jan 2008, Roman Bestuzhev wrote: I am thinking about load balancing between both ISPs. I have read about a technique when you divide your block to several pieces, for example to two /22 blocks and advertise one of them to one ISP and other block to another ISP and at the same time

[c-nsp] BGP long prefix ads

2008-01-11 Thread Roman Bestuzhev
Hello, We have our AS and block of /21 and we are connected to two ISPs. One of them is the main, the other is backup. All traffic is going trough the main one and if it fails the backup is used. This behaviour was implemented by using prepending and works good. I am thinking about load

Re: [c-nsp] BGP long prefix ads

2008-01-11 Thread Christoph Loibl
Hi Roman! On Jan 11, 2008, at 10:16 AM, Roman Bestuzhev wrote: I am thinking about load balancing between both ISPs. I have read about a technique when you divide your block to several pieces, for example to two /22 blocks and advertise one of them to one ISP and other block to

Re: [c-nsp] BGP long prefix ads

2008-01-11 Thread Erich Hohermuth
Hello I agree with Gunther, ask your upstream providers about community lists. Regards Erich If you should see problems then you can still prepend one of the providers or use bgp-communities they provide for a more granular and selective prepending. Best regards, Gunther --

Re: [c-nsp] BGP long prefix ads

2008-01-11 Thread Gunther Stammwitz
: Freitag, 11. Januar 2008 10:16 An: cisco-nsp Betreff: [c-nsp] BGP long prefix ads I am thinking about load balancing between both ISPs. I have read about a technique when you divide your block to several pieces, for example to two /22 blocks and advertise one of them to one ISP and other