Re: BGP Load Balance [7:69611]
Salvatore, ebg-multihop is not required for load balancing. It can be beneficial to use a loopback to peer from/to, similar to IPX internal networks provide better load balancing for NetWare servers. If you feel it's a good idea to peer to/from loopack interfaces (redundancy, better balancing) then you'll need ebgp-multihop since you are adding hops. If you have multiple directly connected interfaces to the BGP neighbor and don't use loopback interfaces, you don't need ebgp-multihop. - Tom Salvatore De Luca wrote: Understood.. but does the command neigh x.x.x.x ebgp-multihop X by itself provide load-balancing? I could be wrong.. but from my undrstanding this just states that you have the capability of peering with neigh that are not directly connected.. You could very well acheive loadbalancing when 2 EBGP routers peer with its neighbors loopbacks.. Yes.. in this case you would need to be directly connected.. so why would you need neigh x.x.x.x ebgp-multihop... Please enlighten me with your thoughts.. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69755t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
Thanks Tom.. good explanation! This was my thought to the tee.. Yes I agree with cisco that it does not hurt to add it to add value to the design.. But as you just stated.. ebgp-multihop is NOT necessary for load balancing That was my point all along.. Just wanted to clarify my point so I am not mistaken.. Thanks!! Sal Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69769t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Re: BGP Load Balance [7:69611]
BGP load balancing can be done using BGP peering on loopback address .And you have to add static routes in your routing table for loopback ip address and mention next-hop as serial links ip addresses/serial interface example: nei loopbackip remote-as asnumber nei loopbackip ebgp-multihop number and then ip route loopback ip 255.255.255.255 serialx ip route loopback ip 255.255.255.255 serialy hope this will help you Ramesh Brian W. wrote: The way I've seen 2 paths used is by peering with a loopback interface and using neighbor peerip ebgp-multihop in the config. Brian - Original Message - From: Azhar Teza To: Sent: Tuesday, May 27, 2003 3:16 PM Subject: BGP Load Balance [7:69611] gt; If BGP route has two equal paths to the same destination, can it do load gt; balance by installing the command? maximum-paths 2 gt; gt; ___ gt; Join Excite! - http://www.excite.com gt; The most personalized portal on the Web! Get Your Private, Free E-mail from Indiatimes at http://email.indiatimes.com Buy The Best In BOOKS at http://www.bestsellers.indiatimes.com Bid for Air Tickets @ Re.1 on Air Sahara Flights. Just log on to http://airsahara.indiatimes.com and Bid Now ! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69671t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
Understood.. but does the command neigh x.x.x.x ebgp-multihop X by itself provide load-balancing? I could be wrong.. but from my undrstanding this just states that you have the capability of peering with neigh that are not directly connected.. You could very well acheive loadbalancing when 2 EBGP routers peer with its neighbors loopbacks.. Yes.. in this case you would need to be directly connected.. so why would you need neigh x.x.x.x ebgp-multihop... Please enlighten me with your thoughts.. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69736t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
heres the cisco guide on it. http://www.cisco.com/univercd/cc/td/doc/cisintwk/ics/icsbgp4.htm#2351 Bri - Original Message - From: Salvatore De Luca To: Sent: Tuesday, May 27, 2003 7:15 PM Subject: Re: BGP Load Balance [7:69611] I personally prefer Peering with Loops myself.. the EBGP multihop command has absolutley nothing to do with loadbalancing. It it used for peering with neighbors whom are not directly connected.. There are various ways of performing BGP load balancing.. Metric..route-maps.. etc.. Pick your flavor. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69646t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
Yes you can load-balance traffic to the same destination over 2 equal logical paths using maximum-paths 2 Using Loopback address ip to peer and acheive load-balancing to the same destination will require either to use process-switching - not recommended - or enable CEF and do per-packet load-balancing Regards, Yasser From: Brian W. The way I've seen 2 paths used is by peering with a loopback interface and using neighbor peerip ebgp-multihop in the config. Brian - Original Message - From: Azhar Teza To: Sent: Tuesday, May 27, 2003 3:16 PM Subject: BGP Load Balance [7:69611] If BGP route has two equal paths to the same destination, can it do load balance by installing the command? maximum-paths 2 ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! _ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69645t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
No - Original Message - From: Azhar Teza To: Sent: Tuesday, May 27, 2003 11:16 PM Subject: BGP Load Balance [7:69611] If BGP route has two equal paths to the same destination, can it do load balance by installing the command? maximum-paths 2 ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69651t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
Folllowing on from everyone else, we often make use of loopbacks for internal peering, that way you will always have redundant paths to iBGP peers, however when peering with external peers / isp we make use of the external facing interface ip. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69661t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
BGP Load Balance [7:69611]
If BGP route has two equal paths to the same destination, can it do load balance by installing the command? maximum-paths 2 ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69611t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
The way I've seen 2 paths used is by peering with a loopback interface and using neighbor peerip ebgp-multihop in the config. Brian - Original Message - From: Azhar Teza To: Sent: Tuesday, May 27, 2003 3:16 PM Subject: BGP Load Balance [7:69611] If BGP route has two equal paths to the same destination, can it do load balance by installing the command? maximum-paths 2 ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69622t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: BGP Load Balance [7:69611]
I personally prefer Peering with Loops myself.. the EBGP multihop command has absolutley nothing to do with loadbalancing. It it used for peering with neighbors whom are not directly connected.. There are various ways of performing BGP load balancing.. Metric..route-maps.. etc.. Pick your flavor. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=69632t=69611 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
