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Topic: Dsl load balancing< Next Oldest | Next Newest >
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PostIcon Posted on: Apr. 01 2001,13:42  Skip to the next post in this topic. Ignore posts   QUOTE
Ok I have dsl through cais(provided by covad in covads pop) Im thinking of getting another dsl line from dsl.net because they have their own pop and their own bandwidth. My logic is if covads network goes down(again) or shuts down all together(ala northpoint) Ill already have a backup line so im not completly disconnected from the net and can continue to serve. I already have 32 IPs from covad and would get 29 new ones from dsl.net. How would I load-balance/fail-over that so that neither line sits unused?

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PostIcon Posted on: Apr. 01 2001,13:58 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
Get 2 Intel Pro+ 10/100 NICs per box, bind them using the Intel Software to use 1 IP for both NICs. If one adapter or line fails the other automatically picks ups.

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PostIcon Posted on: Apr. 01 2001,14:03 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
I was hoping to be able to do this on the router level but if I have to do an NT router I guess thats what Ill have to do.

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PostIcon Posted on: Apr. 01 2001,14:16 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
quote:
Originally posted by jim:
And are they dependent on the IP address or the host name?

What are my choices for both?
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PostIcon Posted on: Apr. 01 2001,14:22 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
There are lots of ways to do this... What type of services are you hoping to stay up? And are they dependent on the IP address or the host name?

NIC binding is by far the simplest way to accomplish network fault tolerance.

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PostIcon Posted on: Apr. 01 2001,14:30 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
Sorry, I should have put this in the above post.

Are you trying for fault-taulerance of a SERVER(s), or a SERVICE(s)!

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PostIcon Posted on: Apr. 01 2001,14:47 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
Service, as in one or more websites.
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PostIcon Posted on: Apr. 01 2001,14:53 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
Then depending on the level of redudancy you want, you can go with the dual NICs for netowrk redundancy for the network, Clustering for server/service level, and then use 2 CISCO Load Balancing routers. This would provide complete fault-tolerance assuming you have redundant power supplies and that the 2 servers were not in the same location.

But still... If you are just talking about Network Fault-Tolerance on one server, then the Dual Instance of the TCP/IP service in a NIC binding scenario will fix you right up.

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PostIcon Posted on: Apr. 01 2001,15:00 Skip to the previous post in this topic. Skip to the next post in this topic. Ignore posts   QUOTE
As it stands right now I have 4 servers running 2 platforms that I plan to load balance. Ive got plenty of ups power(about 4 hours running all 4 machines and 1 monitor) The only thing is they are all in the same location. So unless my local circuit gets cut by construction or somthing I should be good. Hmm now Im real intrested. Which cisco routers do you suggest?
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PostIcon Posted on: Apr. 01 2001,15:37 Skip to the previous post in this topic.  Ignore posts   QUOTE
Fire is the number one reason for multiple locations. You at least need off-site backup storage for disaster recovery.

I'll leave the CISCO hardware selection up to you. What's important is the software running on the router. What your looking for is known as Local Director. It's highly scalable and has multiple add on to meet whatever you can throw at it, whether you have 2 servers in one room or 10,000 servers in 26 countries.

In it's most basic form it simply contacts the Workload agents on the server and decides based on client connections, CPU time, or in a round robin fashion where to direct traffic.

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