[c-nsp] multihoming solution over two different ISP's

[Aftab Siddiqui]

Stick with multihoming with Single ISP. i.e. get 2 last miles with the ISP
and a public pool to advertise and manage the auto failover via BGP.

Secondly you can achieve multihoming with 2 ISP using IP SLA, though it is
not a best practice but surely workable. Take a look at the following link.

http://www.nil.com/ipcorner/SmallSiteMultiHoming/

Regards,

Aftab A. Siddiqui


On Mon, Aug 8, 2011 at 2:51 PM, Martin T <m4rtntns at gmail.com> wrote:

> Aftab,
> HWIC-2FE was exactly the card I was looking as well. As I don't have a
> public IP address space and ASN, what options are left there in order
> to achieve automatic failover?
>
>
> regards,
> martin
>
>
> 2011/8/8 Aftab Siddiqui <aftab.siddiqui at gmail.com>:
> > Asking for the best solution: Yes its via BGP
> > provided that you have you own Public IP space and ASN otherwise its not
> > possible with 2 different ISPs. Adding HWIC-2FE would serve the physical
> > requirement in your scenario.
> >
> > m2c
> > Regards,
> >
> > Aftab A. Siddiqui
> >
> >
> > On Mon, Aug 8, 2011 at 2:28 PM, Martin T <m4rtntns at gmail.com> wrote:
> >>
> >> At the moment I have a following setup:
> >>
> >> http://img69.imageshack.us/img69/4227/252530.png
> >>
> >> The ISP-A connection is the primary link and the ISP-B connection(over
> >> WiMAX) is the backup one. In case the primary link fails, I physically
> >> plug out the fiber-optical converter cable from my Cisco router(Cisco
> >> 1841) and insert the one from WiMAX device. In addition, I reconfigure
> >> the IP parameters in the router. This is probably the most manual
> >> "multihoming" possible :) I'm ready to upgrade my router so it
> >> supports two Ethernet cables.
> >>
> >> a) Is it somehow possible to automatically switch over to another one
> >> connection in case the primary one fails. For example ping
> >> www.google.com over a period of time and in case it doesn't respond,
> >> automatically switch over to backup connection?
> >>
> >> b) Is it somehow possible to have one static IP address while using
> >> the services of two different IPSs?
> >>
> >>
> >> While I'm afraid the latter is impossible, the first automatic
> >> switchover should be somehow doable, shouldn't it? As I told, I'm
> >> ready to invest into new equipment if it's necessary.
> >>
> >> PS I'm aware, that probably the most elegant solution would be a BGP
> >> sessions with ISP routers over different last-mile technologies. This
> >> would provide fast failover and I could use one IP address.
> >>
> >>
> >> What are the best practices for multihome connection over two different
> >> ISP's?
> >>
> >>
> >> regards,
> >> martin
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> >
>