From: Jay Hennigan (jay@west.net)
Date: Sun Mar 02 2003 - 22:22:46 GMT-3
Kevin Banifaz <kbanifaz@hotmail.com> wrote:
> I want to provide full redundant Internet access to a client.
> I'd like to have 2 T3s comming from two different providers, one on each of
> the 7206vxr routers. How would I be able to set this up?
How, in terms of configuration, is IBGP between the routers and EBGP to
one provider from each router. Basic Halabi stuff. How, from a political
and financial perspective, is a different animal.
> Is there a better approach to setting up redundant Internet access?
Better depends on a lot of things. Will this client be surfing or serving?
How many machines/IPs behind the connection? VPN involved? Feeding other
customers? To what level do you want to play the "what if" game? Is the
rest of the customer's network robust enough to warrant this level of
redundancy? Is there someone on-staff with sufficient clue to install and
maintain this? Are there multiple locations?
> What would be the steps to take in setting up BGP in this situation?
A: Get portable IP space
B: Get an AS number
C: Get two upstreams willing to speak BGP with you
D: Get an appreciation of the small but measurable cost to the rest of
the Internet of another route in their routing tables and memory.
Understand the meaning of "scalability". [1]
[1] Item D is why items A and B are discouraged politically and financially
in most cases without a valid technical need.
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net NetLojix Communications, Inc. - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323
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