I am trying to check redundancy operation between my two VCS-Es version x8.1. The following is my scenario:
2x CUCM ----- 2x VCS-C ----- 2x VCS-E
I am connecting through VCS-E to register EX endpoint to CUCM (9.1.2) servers. Registration works fine. I have tried to test redundancy, but I could not see this working as expected.
When my endpoint is registered to primary VCS expressway, and I disconnect network cable of primary expressway, endpoint goes to unregistered. Even if I change the PROXY to point to the second VCS expressway, endpoint stays unregistered. When I plugin the network card of the primary expressway, the endpoint registered to the secondary or primary VCSE. Why is this so. This is not redundant. If the first goes down, I am expecting that the second will take over everything... Any ideas?
No. I use DNS SRV records for redundancy. Even If I set endpoint to use secondary VCS-E, when primary is down. It will not register. If I enable primary back, and leave the setting to register to secondary, the registration is accepted.
I am removing the cable from primary VCS, and in the same time i am investigating what is going on on the endpoint. After couple of seconds, the endpoint unregisters. So the normal scenario should be, that the endpoint changes the SIP proxy to another A host provided in the SRV record. Probably it does, but it cannot register to secondary VCS. If I change the PROXY to secondary VCS-E, the endpoint stays unregistered. If I plug the primary VCS back, it will register if I provide primary or secondary VCS-E. Both scenarios works. Even if primary is down, then no registration in successfull.
No logs for now. Where will I see the apropriate logs?
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...