As is quite common, in this situation we must apply The Berkowitz
Interrogative: What problem are you trying to solve?
Do you want a second T-1 because of traffic requirements? Are you running
low on available bandwidth as it is? Are you worried that this might happen
at some point in the near future?
Are you concerned about redundancy in case of a circuit or provider failure?
Would a second connection to a different POP of the same provider satisfy
your needs?
Should you decide to stick with redundant connections to the same provider,
then you can accomplish this with or without BGP depending on how it is
implemented.
If you connect to two separate providers this opens a much larger can of
worms. You're going to need to apply for your own Autonomous System number
from ARIN (www.arin.net). Then you will have to learn BGP which is easier
said than done. Configuring BGP is relatively easy once you figure out
exactly what you're trying to accomplish. The latter is the hard part: BGP
routing in the internet has just as many administrative/political
considerations as it does technical ones. Going this direction has other
implications as well and I'd use it as a last resort.
You could also use two connections to different providers and get some
hardware to do the load balancing for you. This can be done without the use
of BGP and you can get the hardware from companies like Fatpipe or Radware.
No matter which method you choose, load balancing or load sharing is very
difficult to accomplish in the Internet. Sure, you can get traffic to flow
on both paths but attempting to make them close to equal is very difficult
and probably not even necessary.
HTH,
John
| A central site has two T1s to 2 different providers. Which routing
| protocols
| iis required in this case? Can I load balance between these T1s?
|
| regards,
| dj
|
|
|
|
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