Prior to 6.0, we relied completely on the publisher for EM, so the redundancy story was simple - everything on one node. Now that the Publisher is no longer a single point of failure for EM and login/logouts can be done on any node in the cluster, there are two things that must be considered for EM redundancy beginning with CM 6.0: IP Phone Services menu and the EM login/logout phone service.
IOS Server Load Balancing (SLB) - Where an IOS box front-ends CM servers such that all requests for phone services menu and EM login/logout service are sent to the IOS box which distributes the requests to the CM nodes in the cluster. This provides the ability to either load balance or bypass a node failure. Thus the Services URL for the IP Phone services menu (when you push the Services button on a phone) as well as the EM URL for the EM phone services are pointing to the IP/hostname of the IOS box. In this way, a failure of a node can be routed around on the fly and because in 6.0 EM logins are done at the local node, redundancies for all aspects of EM are possible.
Thanks for ur reply.. However i want to tell u that we have only 2811 router here. And as far as i know IOS loadbalancing can be done on 3600 series routers, or 7200 series router.. or may be with cat 6500 series switches...
So can i do load balancing with Cisco 2811 router also... Also i dont have provision to do changes in DNS...
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...