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 <[email protected]> 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 <[email protected]>: > > 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 <[email protected]> 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 > >> _______________________________________________ > >> cisco-nsp mailing list [email protected] > >> https://puck.nether.net/mailman/listinfo/cisco-nsp > >> archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
