Cal Amp VIPER SC+ 100 series User Manual - page 106
Viper SC+™ IP Router for Licensed Spectrum PN 001-5008-000 Rev. C
| Page 96
Ingress packets: Destination IP address of packets must be equal to the IP address of the specified interface. If
VLAN mode is enabled, the incoming packet must have a VLAN ID matching the interface's PVID.
Egress packets: The source IP address of outgoing packets will be set to the IP address of the specified interface. If
the specified interface as a PVID, the VLAN ID set in the packet will be equal to the interface PVID.
TCP Keepalive
The TCP Keepalive feature will transmit a short Keepalive message to test the TCP connection if there is not data
transferred through an open TCP connection after the specified number of minutes. If the keepalive message is not
received successfully, the Viper will close the existing TCP connection.
To disable this feature, set the TCP keepalive to zero (0). With the TCP keepalive feature disabled, the Viper will
leave the TCP connection open indefinitely. An existing TCP connection will only close if the remote endpoint
closes the connection, the Viper serial port is disabled, or if the Viper is unable to successfully communicate with
the remote endpoint during a data transmission. The default setting is disabled; zero (0) minutes.
TCP Server Control
One client:
Limit the amount of TCP clients to 1. If this option is not checked, the limit of TCP clients is 256.
Replace old client:
When the maximum amount of TCP client is reached, the TCP server can decide to drop an old TCP client in favor
of a new TCP client. If this option is selected and there is a new TCP client connecting to the TCP server and the
maximum amount of client is already reached, the TCP server will shut down an old TCP client to make room for
the new one (otherwise the new one will fail to connect).
RTS/CTS Mode Settings
Note: RTS/CTS Mode Settings apply only to the COM Port and this section does not apply for the Setup Port.
CTS assertion delay
The time in milliseconds (ms) that the data will be displayed after the CTS has been sent. The default setting is 4
milliseconds.
CTS negation delay
The time in milliseconds (ms) that the CTS will be kept asserted after the last character has been transmitted. The
default setting is 4 milliseconds.
Send buffered data before negating CTS
All the data will be sent before the Viper drops the CTS control line.
Fragment large messages
Allows the data to be fragmented into smaller messages.
Discard all buffered data when entering flow control
The data in the serial port buffer will be discarded and only new data will be processed under the flow control.
Save — Click Save to save the settings if you have changed any of the settings in this tab.
Cancel — Click Cancel to cancel any change you may have made to any of the settings in this tab.
Refresh — Click Refresh to reload the tab with the settings currently in effect.