Mocomtech CIM-550 - Manual (Page 185)

CiM-550 IP Enabled Satellite Modem Rev. 2
CLI and Telnet Interface CD/CIM550.IOM
159
Redundancy implies the coordination of two CiM’s to provide a redundant link. Each of
the CiM’s will be defined as either an Online or Offline. The Online is the unit that will
process user traffic. The Offline modem monitors the health of the Online Modem. If the
Offline detects a failure on the Online, it will assume the role of the Online. To allow a
user to verify connectivity with the Offline, the Offline is assigned a unique IP Address.
To support this need, a secondary unit will perform the following actions after the
detection of a failure on the Controller :
1 Assume the Traffic IP Address.
2 Assume the Traffic MAC Address.
3 Assume the role of Online (i.e. The state changes from Offline to Online).
To enable redundancy, a user must :
1 Define a unique IP Address for each Modem via the Controller’s Interface Configuration
Page.
2 Define a unique Traffic IP Address on the Online modem (will be the same for each modem)
via the Online’s Redundancy Configuration Page.
If Redundancy is enabled on both the Online and Offline, their respective roles will be
displayed on the ‘Current State’ field on the Redundancy Configuration menu.