Lanner LEC-6032C, User Manual

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LEC-6032C User Manual
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Lanner Bypass has evolved to Generation 3 which has much advancement over the previous two
generations. It offers more flexibility and richer configuration of bypass setting by adopting the
uController. With the uController and its onboard Non-volatile random-access memory (NVRAM),
it can store the configuration of the bypass settings as well as manage the bypass status accurately
regardless of the system’ s operating state. It also eliminates the brief moment in which the
bypassed cannot be managed during the instance of power-on (Just-on state), which could possibly
result in packet loss happened in Generation 2. Moreover, up to 3 dedicated watchdogs for
controlling bypass status of different pairs is designed to accommodate the versatility of LAN
configuration in your network environment. For instance, you might have two connections for
differentiated services like VOIP or media streaming, and using the dedicated watchdog timer for
different pairs of bypassed ports can help manage the bypass function differently on port basis.
The following diagram depicts the role and function of the uControllers in Generation 3 Bypass. The
interface between the system and uController is SMBUS (I2C). The uController can control up to 4*
pairs of bypass.
1
The number of bypass pairs varies depending on the models of the system.
System Interface
Network
interface 0
Network
interface 1
NIC
controller 0
NIC
controller 1
uController
SMBUS
Network
interface X
Network
interface Y
NIC
controller X
NIC
controller Y