adept technology GadgetGateway, User Manual

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2-15
GadgetGateway Overview 2.6852 to 852 Bridge Mode
uint32 totalArbs;
uint32 totalFailuresIP;
uint32 totalFailuresLON;
uint32 totalFaultsIP;
uint32 totalFaultsLON;
uint32 secsSinceClear; // seconds
uint16 forwardRate; // packets per second
char reserved[2];
} UNVTStatusType;
The fields are as follows:
Status
is an 8 bit number. The bit definitions are given in Table 1. It is the same infor-
mation reported in the Status SNVT reserved field.
totalArbs
is the total number of active state arbitrations since the last time the statistics
were cleared.
totalFailuresIP
is the total number monitoring packet failures detected by this
device of the IP interface since the statistics were cleared.
totalFailuresLON
is the total number of monitoring packet failures detected by this
device of the LON interface since the statistics were cleared.
totalFaultsIP
is the total number of diagnostic faults detected by this device of the
IP interface since the statistics were cleared.
totalFaultsLON
is the total number of diagnostic faults detected by this device of the
LON interface since the statistics were cleared.
secsSinceClear
is the count of seconds since the statistics were last cleared.
forwardRate
is computed as the total number of packets forwarded divided by the
number of seconds since the forward rate was last calculated. The forward rate is updated
whenever the UNVT is updated and at least 1 second has expired since the last update.
2.6 852 to 852 Bridge Mode
In order to better support large installations with dozens of IP to LON routers a Gadget-
Gateway router can be configured in 852 to 852 bridging router mode. In this mode one
GadgetGateway router can bridge two logical 852 channels. When acting as an 852 bridge
the router is a member of two logical 852 channels sharing one ethernet interface. The
router bridges traffic between the two channels. On the LON side the bridge looks like a
LON router. This overcomes limitations of some network managers on the number of 852
devices per channel and provides for enhanced scalability by partitioning the 852 traffic