Comtech EF Data DTMX5000 SpectraCast - Manual (Page 172)

High Availability Server DTMX5000 IP Satellite Gateway
C–4 Rev. 1
•
The switch over operation is done with the following steps (HAS-2000 side):
♦
Sends TRAP (Start of Switching) to the NMS.
♦
Sends disable command to the active Gateway/INA.
♦
Sends disable command to the active Gateway/INA. The switch over
information is an IP packet that includes the new data LAN IP address
(of the active Gateway/INA), the host details and path of the mirror
database.
♦
Activate the stand-by Gateway/INA.
♦
Sends TRAP (End of Switching) to the NMS.
♦
Switch the IF switch.
•
Switching operation (Stand-by Gateway/INA Side):
♦
Receives switch over information from the HAS-2000 that includes the
new data LAN IP address (of the active Gateway/INA), the host details
and path of the mirror database.
♦
Loads the active Gateway / INA database from the host.
♦
Receives activation command.
♦
Sends gratuitous ARP to announce the new IP-MAC address pair.
•
The return to work of the active Gateway/INA is done by a manual command send
from the management application.