Comtech EF Data CDM-570 - Manual (Page 456)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Appendix H MN/CDM570L.IOM
H–4
When there is a switchover to the backup modem, this modem will now assume the Traffic IP. It
will also broadcast a “gratuitous ARP” which will tell all local devices to now associate a new
MAC address for the Traffic IP 172.18.10.20. Each device will update their ARP tables and
traffic will resume virtually instantaneously.
Figure H-2. CDM-570 1:1 IP Redundancy Switchover
All configuration changes can only be made to the Online CDM-570/570L and
will require a “Save Parameters to permanent storage” so that the
configuration change is also applied to the Backup CDM-570/570L.