Mark R Lindsey wrote:
On Aug 13, 2009, at 12:46 PM, Kenny Sallee wrote:
* redundancy for CLEC
In the case of a site fault, the remaining site would detect the fault and assume full control. It's critically important in these designs that the two call control servers have connectivity that's the most reliable part; i.e., if anything at all is working, then the two call control servers should be able to communicate: If I'm a call control server, it is impossible for me to determine whether the other call-control server is dead, or if it's just not able to communicate with me. If it's alive, but the two call control servers cannot communicate, then both can become active and try to assume control of the linkset. Bad stuff ensues.
It sounds like for the entire effort and cost of this, there's still a SPOF, not to mention it requires you always augment at 45% or lower so if you lose one server, you don't block. -Paul