Split horizons?
in [Cisco]
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From: thejayman on 24 Aug 2006 03:39 Hi all, I wounder if somebody could point me in the right direction for info on setting up Split Horizons? Not sure if I have the terms correct. Basicly I have two ISP lines and would like to use both for internet traffic either load-balanced or by IP. Thanks in advance. J
From: Hoffa on 24 Aug 2006 06:24 Split Horizon as I know it is a technique used by some routing protocols to prevent routing loops. I'm not sure it can be applied to load balancing two ISPs. Maybe you should look into specialized hardware to solve this issue. Link load balancers like http://www.xrio.co.uk/qbalancer_range.aspx or http://www.f5.com/products/bigip/isptm/ Another way to use different ISPs for Internet traffic is by applying for a dedicated AS and IP-range and use BGP to route the traffic over the different ISPs but this is very difficult to set up so unless you're system is highly mission critical I'd go for dedicated hardware solution. Regards Fredrik Hofgren thejayman wrote: > Hi all, > > I wounder if somebody could point me in the right direction for info on > setting up Split Horizons? Not sure if I have the terms correct. > Basicly I have two ISP lines and would like to use both for internet > traffic either load-balanced or by IP. > > Thanks in advance. > J
From: James on 24 Aug 2006 09:14 Just found this after a google search:- http://www.dslreports.com/faq/cisco/50.5%20Load%20Balance%202%20ISP%20with%20Cisco James Hoffa wrote: > Split Horizon as I know it is a technique used by some routing > protocols to prevent routing loops. I'm not sure it can be applied to > load balancing two ISPs. > Maybe you should look into specialized hardware to solve this issue. > Link load balancers like http://www.xrio.co.uk/qbalancer_range.aspx or > http://www.f5.com/products/bigip/isptm/ > Another way to use different ISPs for Internet traffic is by applying > for a dedicated AS and IP-range and use BGP to route the traffic over > the different ISPs but this is very difficult to set up so unless > you're system is highly mission critical I'd go for dedicated hardware > solution. > > Regards > Fredrik Hofgren > > thejayman wrote: > > Hi all, > > > > I wounder if somebody could point me in the right direction for info on > > setting up Split Horizons? Not sure if I have the terms correct. > > Basicly I have two ISP lines and would like to use both for internet > > traffic either load-balanced or by IP. > > > > Thanks in advance. > > J
From: thejayman on 25 Aug 2006 03:26 Thanks for the replies. I had thought about the F5 route but was trying to save costs. This other way is a good thought jerker. J James wrote: > Just found this after a google search:- > > http://www.dslreports.com/faq/cisco/50.5%20Load%20Balance%202%20ISP%20with%20Cisco > > James > > Hoffa wrote: > > Split Horizon as I know it is a technique used by some routing > > protocols to prevent routing loops. I'm not sure it can be applied to > > load balancing two ISPs. > > Maybe you should look into specialized hardware to solve this issue. > > Link load balancers like http://www.xrio.co.uk/qbalancer_range.aspx or > > http://www.f5.com/products/bigip/isptm/ > > Another way to use different ISPs for Internet traffic is by applying > > for a dedicated AS and IP-range and use BGP to route the traffic over > > the different ISPs but this is very difficult to set up so unless > > you're system is highly mission critical I'd go for dedicated hardware > > solution. > > > > Regards > > Fredrik Hofgren > > > > thejayman wrote: > > > Hi all, > > > > > > I wounder if somebody could point me in the right direction for info on > > > setting up Split Horizons? Not sure if I have the terms correct. > > > Basicly I have two ISP lines and would like to use both for internet > > > traffic either load-balanced or by IP. > > > > > > Thanks in advance. > > > J
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