KVM0216A KVM Series Bus Communication Behavior

Issue

KVM0216A KVM Series Bus Communication Behavior


Product Line

• KVM Switches
  • KVM0216A Enterprise Analog
     

Environment

• All installations

Cause

The next generation enterprise analog KVM boasts (2) local console users, and (16) ports. It also supports (1) or (2) bus cascading. When a local connection is simultaneously being used with a cascade connection, some pieces of information should be taken under advisement for expected (2) user operation.


Resolution
 

On the KVM0216A, the front DB-15 connection port is for use with an optional AP5717/AP5719 Rack LCD Console with the KVM-LCDMOUNT kit. This front port, the top cascade port (Cascade 2) and local console #2 are both using bus 2, while the bottom Cascade port (Cascade 1) and local console #1 are using bus 1.

 

 

Item	Description
1	Power LED
2	Server Port Status LED Indicators
3	Rack LCD Console Connection
4	Pinhole Reset Button
5	USB Ports for Virtual Media/Firmware Upgrade

 

  

 

 

Item	Description
1	Input Power #1
2	Input Power #2
3	PDU Ports #1 and #2
4	Local Console #1
5	Local Console #2
6	Cascade Ports - Cascade 2 (top), Cascade 1 (bottom)
7	Server Ports

• Bus 1 priority: Cascade Port 1 (bottom port) > Local Console #1
• Bus 2 priority: Rack LCD Console (Front port) > Cascade Port 2 (Top Port) > Local Console #2
• Bus 1 & Bus 2 are independent from each other

 

If the priorities are not taken into account, a user may see the following message upon trying to use a local console connection: