Re: To BGP or not to BGP [7:5007]
Check out the other recent post re dual internet routes, Richard Tufaro, relevant info. Rashid John Jarrett wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Sorry for the pun. I am currently looking at getting a second ISP for failover and load-balancing. However I would prefer not using BGP if at all possible. Any suggestions would be greatly appreciated. John 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=7i=5109t=5007 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
To BGP or not to BGP [7:5007]
Sorry for the pun. I am currently looking at getting a second ISP for failover and load-balancing. However I would prefer not using BGP if at all possible. Any suggestions would be greatly appreciated. John Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5007t=5007 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: To BGP or not to BGP [7:5007]
Sorry for the pun. I am currently looking at getting a second ISP for failover and load-balancing. However I would prefer not using BGP if at all possible. Any suggestions would be greatly appreciated. John With two ISPs, you really tend to need BGP. Another important factor in all this is whether you have provider-independent address space, or if your address space is assigned to you by the incumbent ISP. It may be worth doing a careful analysis of connecting to a high-quality single ISP at multiple POPs. With the right carrier and a well-written contract, you actually may be better protected against a major fiber cut. The bad news about having two independent ISPs is that they may both unwittingly buy bandwidth from the same third party, be assigned to the same cable, and get cut by the same backhoe. Even when connecting to multiple POPs of the same ISP, there may be quite good reasons to use a simple BGP. See RFCs 1998 and 2270, and my book, WAN Survival Guide. You don't need to get full routes or a large router. What are your reasons for not wanting to use BGP? Incidentally, a good ISP should not only be able to help you set it up, but it should actively want to if you are a BGP newbie. The good news about two ISPs is that a failure of the routing system in one isn't necessarily going to affect the other. That isn't to say there haven't been major BGP screwups that affected the entire Internet. Load balancing is a very tricky issue. Especially with multiple ISPs, it's often more a goal than a reality. Good load distribution requires a LOT of global internet routing clue, far beyond the CCIE level. Even with the best BGP load balancing, you are still going to experience a fair degree of asymmetry: the query goes out to ISP 1, but the response comes back via ISP 2. This is quite normal behavior, although it may look wierd. Seeing asymmetrical patterns on 30-40% of your traffic, given two ISPs, is very common. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=5030t=5007 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: To BGP or not to BGP [7:5007]
BGP RULES ! ! ! Try it you'll like it. Darel R Graham -Original Message- From: Howard C. Berkowitz [mailto:[EMAIL PROTECTED]] Sent: Friday, May 18, 2001 2:01 PM To: [EMAIL PROTECTED] Subject: Re: To BGP or not to BGP [7:5007] Sorry for the pun. I am currently looking at getting a second ISP for failover and load-balancing. However I would prefer not using BGP if at all possible. Any suggestions would be greatly appreciated. John With two ISPs, you really tend to need BGP. Another important factor in all this is whether you have provider-independent address space, or if your address space is assigned to you by the incumbent ISP. It may be worth doing a careful analysis of connecting to a high-quality single ISP at multiple POPs. With the right carrier and a well-written contract, you actually may be better protected against a major fiber cut. The bad news about having two independent ISPs is that they may both unwittingly buy bandwidth from the same third party, be assigned to the same cable, and get cut by the same backhoe. Even when connecting to multiple POPs of the same ISP, there may be quite good reasons to use a simple BGP. See RFCs 1998 and 2270, and my book, WAN Survival Guide. You don't need to get full routes or a large router. What are your reasons for not wanting to use BGP? Incidentally, a good ISP should not only be able to help you set it up, but it should actively want to if you are a BGP newbie. The good news about two ISPs is that a failure of the routing system in one isn't necessarily going to affect the other. That isn't to say there haven't been major BGP screwups that affected the entire Internet. Load balancing is a very tricky issue. Especially with multiple ISPs, it's often more a goal than a reality. Good load distribution requires a LOT of global internet routing clue, far beyond the CCIE level. Even with the best BGP load balancing, you are still going to experience a fair degree of asymmetry: the query goes out to ISP 1, but the response comes back via ISP 2. This is quite normal behavior, although it may look wierd. Seeing asymmetrical patterns on 30-40% of your traffic, given two ISPs, is very common. 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=7i=5041t=5007 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
