Cal Amp VIPER SC+ 100 series User Manual - page 59
Viper SC+™ IP Router for Licensed Spectrum PN 001-5008-000 Rev. C
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Multi-Speed Mode
Select whether Multi-Speed Mode will be disabled or enabled. When Multi-Speed Mode is disabled—the default
setting, the units communicate with each other at a fixed data rate (Refer to APPENDIX B for data rates by model).
By enabling Multi-Speed Mode, the Viper can be set to operate as a rate follower to match the speed of the Base
unit set to operate as the rate-controller. This means the Viper will adjust to the over-the-air data rate to that of
the rate-controller. Only Viper Base Station units can be configured as a rate controller.
RF IP Address
The RF IP address is the IP address used when sending data and control packets on the Viper radio network. The
default RF IP address will have the form 10.x.y.z, where x, y, and z are based on the last six digits of the unit’s
Ethernet MAC address.
RF Netmask
Set the RF Netmask to a valid common RF IP netmask for all units on the network. The default is 255.0.0.0.
RF Gateway
Set the RF Gateway to the IP address that will be used to forward packets to outside networks. The default is
0.0.0.0.
RF MAC Address
The RF MAC Address is a shortened version of the Ethernet MAC address which is used to identify the Viper RF
interface to other Vipers on the network. The default RF MAC address is assigned by the factory and is equal to the
last six digits of the Ethernet MAC address (DD:EE:FF). While users cannot change the Ethernet MAC address, they
may enter a new RF MAC address for the device. The RF MAC address must be unique for each Viper in the
network. When the network is configured for router mode, this feature is useful when replacing a Viper in the field
with a new one. The new Viper can be programmed to have the same RF MAC, Ethernet IP Address, and RF IP
Address as the Viper that is being replaced. When the new Viper is installed, neighboring Vipers in the network will
not know the original Viper was replaced. Neighboring Vipers will not need to have their neighbor tables updated.
The default setting is to use the default RF MAC address, displayed in the format DD:EE:FF.
MTU (Maximum Transfer Unit)
This value represents the maximum number of bytes the Viper will send in a packet. Enter a value from 576 to
1500. The default value is 1500.
Save — Click Save to save any changes you have made to settings in this tab. See Note below.
Cancel — Click Cancel to cancel any changes you may have made to any of the settings in this tab.
Note: If you change the IP Forwarding Mode, Access Point, RF IP Address, RF Netmask, RF MAC Address, or MTU
settings in this tab, as indicated by the yellow alert symbol (
), a reset of the Viper is required before the setting will
take effect.