Imagine CloudXtream, User Manual

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cDVR User Guide, Release 2.0 34
CHAPTER 4
RM Redundancy Setup
This section describes how to set up two RMs to operate in node-level 1+1 active/standby redundancy.
If you are not using RM redundancy in your deployment, you may skip this chapter and proceed to
Chapter 5, Recording Manager GUI Overview on Page 41.
This release of cDVR supports 1+1 active/standby redundancy for the RM component only.
In This Chapter:
•
“Prerequisites,” next;
•
“Networking Requirements” on page 34 ;
•
“Redundancy Configuration Instructions” on page 36 ;
•
“Removing RM Redundancy” on page 38 ;
•
“What Next?” on page 40 .
Prerequisites
In order to set up RM redundancy, you must have installed the RM software application on both
devices meant to be redundant. (Refer to the
CloudXtream
TM
DVR Software Setup & Upgrade Guide for
instructions.)
Networking Requirements
In order to configure RM node redundancy you must ensure the two target RMs can communicate
multicast management traffic to each other.
Caution! RM redundancy uses the multicast address of 225.0.0.38 for all redundancy communication.
This multicast IP address should not be changed
1
on RM . As such if your WAN-based network
routers are not configured to pass multicast traffic (the default) then you must manually
configure all relevant interfaces on the router(s) to pass the 225.0.0.38 multicast address. 

Unicast over port 9036 is used for initial setup exchanges between RM s, however, ongoing
redundancy communication is performed through multicast over ports 12344-12346. For more
information on communication protocols and their respective ports, refer to “Storage Node
Configuration” on page 27 .
1. If your network configuration requires the use of a different multicast IP address, please contact Imagine Com-
munications Customer Support for further instructions. See “Contacting Customer Support” on page 164 .