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KVM0216A KVM Series Bus Communication Behavior
Issue
KVM0216A KVM Series Bus Communication Behavior
Product Line
- KVM Switches
- KVM0216A Enterprise Analog
- 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: