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

> 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

CCIE8122

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

Vincent C Jones

[theapplebee]

You don't need BGP unless multi-links to ISP or academical reason.
Not to use BGP will save some resource of CPE.

Check this link

http://showipbgp.com/bgp-knowledge-b...-need-bgp.html

It will give you how to setup BGP and how to be prepared BGP setup and etc.

theapplebee