Delay For Demod; Locktimes; Apply Delay Values; Sotm Update - Comtech EF Data Vipersat CDM-570 User Manual

V i p e r s a t C o nf i g u r a t i o n

Delay for Demod

This parameter allows the operator to insert additional delay to account for the
tuning of the demodulator. Enter D to modify this parameter.

LockTimes

LockTime settings for the four data rates displayed can be adjusted either up or
down, but default settings based on satellite testing should be used as a starting
point. These defaults are stored in each modulator/demodulator unit and are
restored by entering R at the command prompt.
Once restored, the lock time for each data rate can be modified by entering the
corresponding number.
Figure 3-53
Set LockTime prompt
To disable Hitless Switching, enter -1 for all lock times.

Apply Delay Values

To implement any modifications to the Hitless Switching parameters, enter A at
the command prompt to apply these values to the modem.

SOTM Update

This menu item appears for the Hub modem only.
The SOTM Update enables RIPv2 (Routing Information Protocol) in forward
routes, providing dynamic updates to the routing table. This allows routing
configurations for Remotes to be written by the VMS via the Hub TDM. When
the VMS writes the routes, the TDM unit will generate a RIPv2 routing update
to its default gateway, specifying the new hop router for the Remote. This will
ensure that the edge router has a current table of routes to all of the remote sites.
Refer to the Vipersat VMS User Guide for implementation details.
In applications utilizing SOTM (Satellite On The Move) where multiple TDMs
share one router, this option should be enabled because of the potential that the
Hub TDM may change, and thus the path to the default gateway to the Remote
will change as well. It is not necessary to enable this option when each TDM
has its own router.
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