|
|
|
|
11-20-2003, 02:42 AM
|
#1 |
BGP alternatives?
Is BGP the only feasible option for redundant inbound Internet connections?
What about for smaller companies who only have a small IP block and their ISP's will not support BGP? SP |
|
|
|
11-20-2003, 05:59 AM
|
#2 |
|
Posts: n/a
|
Re: BGP alternatives?
> Is BGP the only feasible option for redundant inbound Internet connections?
> What about for smaller companies who only have a small IP block and their > ISP's will not support BGP? Without BGP, you are pretty much limited to using the same ISP for the redundant circuit. You could do multiple ISPs, but that would only address outbound connectivity, not inbound. HTH kr |
|
|
|
11-20-2003, 03:23 PM
|
#3 |
|
Posts: n/a
|
Re: BGP alternatives?
In article <7IWub.713$yX5.567@okepread05>, SP <> wrote:
>Is BGP the only feasible option for redundant inbound Internet connections? >What about for smaller companies who only have a small IP block and their >ISP's will not support BGP? As is so often the case, the answer is... it depends. There are a wide range of options, depending upon how quickly you want external users to fail-over to the redundant path, from under 20 seconds running an IGP with multiple links to a single ISP to hours using manual updates to DNS; and what application is being used (for example, SMTP email only requires an MX record for a unique IP for each path). BGP tends to be the easiest for general purpose use, but there are many exceptions, and even BGP won't help you if set up wrong. See the "Multihoming--Connecting to Two ISPs" white paper on my web site for brief discussion of many of the issues. -- Vincent C Jones, Consultant Expert advice and a helping hand Networking Unlimited, Inc. for those who want to manage and Tenafly, NJ Phone: 201 568-7810 control their networking destiny http://www.networkingunlimited.com |
|
|
