Re: [c-nsp] multihoming solution over two different ISP's
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 m4rtn...@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 ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] multihoming solution over two different ISP's
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.siddi...@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 m4rtn...@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 ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] multihoming solution over two different ISP's
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 m4rtn...@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.siddi...@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 m4rtn...@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 ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] multihoming solution over two different ISP's
On Mon, 8 Aug 2011, Aftab Siddiqui wrote: 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. BGP is the best way to go, and you certainly can multihome with BGP using IP space assigned by one of the ISPs. Lots of AS's do that. More below... On Mon, Aug 8, 2011 at 2:28 PM, Martin T m4rtn...@gmail.com wrote: At the moment I have a following setup: http://img69.imageshack.us/img69/4227/252530.png 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? You can do poor man's multihoming using 2 ISPs (no BGP) by doing reachability testing of something or things out on the internet, and changing your default gateway when you think the primary connection has failed. You'll have to use NAT/PAT such that when you're going out through ISP-A, your outside NAT address is an ISP-A address, and when you're going out through ISP-B, your outside NAT address is an ISP-B address. With a bit of policy routing, you can even keep both the ISP-A and ISP-B connections up and usable simultaneously. -- Jon Lewis, MCP :) | I route Senior Network Engineer | therefore you are Atlantic Net| _ http://www.lewis.org/~jlewis/pgp for PGP public key_ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] multihoming solution over two different ISP's
Get a 2950 or even a 3524XL, use vlans and subinterfaces. Use BGP if available. Otherwise, if you are already using NAT, then this should work fine. http://www.cisco.com/en/US/docs/ios/12_3/12_3x/12_3xe/feature/guide/dbackupx.html https://supportforums.cisco.com/docs/DOC-8313 If you need redundancy and incoming IP reachability, and you cannot get BGP/Public IP addresses from your existing ISP's, you can obtain it from other ISP's, even if all they can offer you is a tunnel. Joe Martin T 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 cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
