For a data center it may be an appropriate solution but for a small shop or home use this is just an extra piece of hardware to buy, maintain and a failure point as well. I wish there was something elegant that can be built into the astlinux image.... I have two ISP at home and Comcast regularly sucks. My other ISP is over WiMax and reliability is much better. Unfortunately I have to deal with WiMax latency but is a good backup plan when Comsucks takes forever to fix anything. My crude setup does work and is automated, it just requires reboot. Even restarting Asterisk won't connect back to my SIP providers....
----- Original Message ---- From: Philip Prindeville <philipp_s...@redfish-solutions.com> To: astlinux-users@lists.sourceforge.net Sent: Wed, September 22, 2010 6:08:17 PM Subject: Re: [Astlinux-users] Multi-home AstLinux? About the only really cleanly working solution I can think of is to have a "proxy" in a data center that accepts traffic for address 'A', and then encapsulates it (either via IPsec ESP with NULL encryption or with GRE) and then forwards the traffic to your IP addresses B and C. You can decide what policy you want for that: easiest is all traffic to B as long as the tunnel is up, and then failing over to C when the tunnel goes down... That, on the other hand, introduces another point of failure, and requires you to potentially renumber your network to expose 'A' as your address (whereas previously 'B' or 'C' might have been your published address). On 9/22/10 3:12 PM, Dan Ryson wrote: > Thanks Philip. > > Regardless of what it should be called, what we need is fail-over > diversity. For our purposes, we hope to avoid having two circuits from > the same provider because when our cable modem stops working, cable > Internet service also quits working at neighboring businesses in our > complex. We've found the same to be true for our DSL line. However, > they've never (knock wood) failed at the same time. > > Dan > > On 9/22/2010 3:42 PM, Philip Prindeville wrote: >> Technically, "multi-homed" is exactly that: having more than one IP >>address. >> >> Doing hot-failover with no loss of connectivity is a lot easier to do with >> two >>circuits of the same kind (or at least through the same provider, terminating >>into the same peering gateway). >> >> >> On 9/22/10 8:16 AM, James Babiak wrote: >>> Dan, >>> >>> You're not really 'multi-homed', you just have two Internet circuits. If >>> one goes down, it's not like you can use the same IP address on the >>> other one. >>> >>> What you can do though is setup the second circuit as a fail-over if the >>> first one goes down. We do this and it works very well. We basically >>> have a script running in the background that monitors for connectivity >>> on the primary circuit. If it loses connectivity for so many seconds, it >>> will test to see if the secondary circuit is online. If it is, it >>> changes the default route to use the secondary. It continually monitors, >>> using a host route, to see if the primary circuit comes back, and if so >>> it changes the default route back over to it. >>> >>> Keep in mind that any external calls in progress when the primary goes >>> down would die. >>> >>> -James >>> >>> On 09/22/2010 10:42 AM, Dan Ryson wrote: >>>> I think this topic has already been discussed before on this list. >>>> However, Google and I can't seem to find the discussion thread. >>>> >>>> We have fixed IPs from both a cable and DSL provider. It it feasible to >>>> our multi-home AstLinux using a Soekris net5501? If so, how? >>>> >>>> Thanks. >>>> >>>> Dan >>>> >>>> > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org. ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
