Re: smallest BGP Network size
[ The following text is in the "iso-8859-1" character set. ] [ Your display is set for the "US-ASCII" character set. ] [ Some characters may be displayed incorrectly. ] for your loadbalancing and multihomed problem, i suggest you to try this equipement: http://www.ecreate.com.cn/radware/lp/LinkProof.htm raf -Original Message- From: John Neiberger <[EMAIL PROTECTED]> To: Gary Crouch <[EMAIL PROTECTED]> Cc: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Tuesday, March 13, 2001 11:21 AM Subject: Re: smallest BGP Network size >We are also multihomed to separate providers. When researching our plans, I >found that a /24 was about as small as you could go and still have a chance >of being reachable from most of the internet. One provider required that we >have at least a /24, and the other highly recommended it. > >Even if both of your providers will accept something smaller, they have no >control over what other providers will do to your routes. With anything >smaller than a /24 they will probably be filtered, as you seem to be >noticing. > >HTH, >John > >On Mon, 12 Mar 2001 17:35:42 -0800, Gary Crouch wrote: > >> What is the smallest network that can support BGP ? >> we have a /27 network with two ISP UUNET and @work=20 >> when the router is full configured for load balancing traffic going out = >> the @work connection does not come back >> router reports destionation net unreachable >> >> UUNET say /27 is not a problem=20 >> @work say we need a least a /24 network=20 >> >> when UUNET fail over we have no traffic come back over the @work >connection= >> . >> >> >> >> >> >> >> What is the smallest network that can support BGP >> ? >> we have a /27 network with two ISP UUNET and @work >> >> when the router is full configured for load balancing >traffic >> going out the @work connection does not come back >> router reports destionation net >unreachable >> >> UUNET say /27 is not a problem >> @work say we need a least a /24 network >> >> when UUNET fail over we have no traffic come back over >the >> @work connection. >> >> >> >> >> >> >> _ >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > > >___ >Send a cool gift with your E-Card >http://www.bluemountain.com/giftcenter/ > > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: smallest BGP Network size
We are also multihomed to separate providers. When researching our plans, I found that a /24 was about as small as you could go and still have a chance of being reachable from most of the internet. One provider required that we have at least a /24, and the other highly recommended it. Even if both of your providers will accept something smaller, they have no control over what other providers will do to your routes. With anything smaller than a /24 they will probably be filtered, as you seem to be noticing. HTH, John On Mon, 12 Mar 2001 17:35:42 -0800, Gary Crouch wrote: > What is the smallest network that can support BGP ? > we have a /27 network with two ISP UUNET and @work=20 > when the router is full configured for load balancing traffic going out = > the @work connection does not come back > router reports destionation net unreachable > > UUNET say /27 is not a problem=20 > @work say we need a least a /24 network=20 > > when UUNET fail over we have no traffic come back over the @work connection= > . > > > > > > > What is the smallest network that can support BGP > ? > we have a /27 network with two ISP UUNET and @work > > when the router is full configured for load balancing traffic > going out the @work connection does not come back > router reports destionation net unreachable > > UUNET say /27 is not a problem > @work say we need a least a /24 network > > when UUNET fail over we have no traffic come back over the > @work connection. > > > > > > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Send a cool gift with your E-Card http://www.bluemountain.com/giftcenter/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: smallest BGP Network size
>What is the smallest network that can support BGP ? Again, distinguish between external routing and the BGP protocol. The BGP protocol itself imposes no restriction on prefix length, but the policies of the ISPs involved do. >we have a /27 network with two ISP UUNET and @work From which ISP do you have the /27? It's unlikely that a prefix that small would ever be globally routable. If it is from UUNET space, both UUNET and @work would have to agree to let @work advertise that block. Very unlikely that would happen. If you must solve this problem from a pure routing standpoint, it is probably much more realistic to get two diverse connections to UUNET, assuming your address space is part of theirs. There may be other strategies if you have address assignments from both UUNET and @work, but they will probably involve DNS, NAT, and possibly secondary server addresses. Unfortunately, there are no general solutions for multiprovider, multihomed routing for small networks. To help more, I'd really need to know more about your applications -- what problem you are trying to solve. Do you support servers that need to be reached from the Internet? Is the connectivity for your clients reaching external servers? Are there VPNs involved? >when the router is full configured for load balancing traffic going out How do you define load balancing here? >the @work connection does not come back >router reports destionation net unreachable > >UUNET say /27 is not a problem >@work say we need a least a /24 network > >when UUNET fail over we have no traffic come back over the @work connection= >. > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
smallest BGP Network size
What is the smallest network that can support BGP ? we have a /27 network with two ISP UUNET and @work=20 when the router is full configured for load balancing traffic going out = the @work connection does not come back router reports destionation net unreachable UUNET say /27 is not a problem=20 @work say we need a least a /24 network=20 when UUNET fail over we have no traffic come back over the @work connection= . What is the smallest network that can support BGP ? we have a /27 network with two ISP UUNET and @work when the router is full configured for load balancing traffic going out the @work connection does not come back router reports destionation net unreachable UUNET say /27 is not a problem @work say we need a least a /24 network when UUNET fail over we have no traffic come back over the @work connection. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
