Black Box SW725A-R4, SW722A-R4, KV3108SA-R4 Kernel is bad, load new kernel through serial port

SERVSWITCH™

•If you are attaching more than one submaster to a slimline or full-size master ServSwitch, we strongly recommend that all of the submasters have the same number of ports. This is because the Switch’s “Expansion width” command/ parameter—the value it uses to calculate how many ports each attached submaster has (see Section 5.2.5)—is global rather than submaster-specific. In other words, a master ServSwitch always expects every submaster attached to it to have the number of ports specified in Width.

For example, if you attach one 8-port submaster and one 12-port submaster to a master ServSwitch, and then set Width to 8 (and Units to 2 and Max Ports to 20—see Sections 5.2.3 and 5.2.4), you will be unable to scan or switch to the upper 4 ports on the 12-port submaster—the Switch has no way of knowing they are even there. On the other hand, if you set Width to 12 (and Units to 2 and Max Ports to 24), your system will include 4 “phantom” ports (nonexistent ports 9 through 12 on the 8-port submaster) that the master will think are there and will try to scan or switch to, displaying a blank screen.

When you’re ready to begin hooking up the actual units, follow these steps:

1.If this hasn’t already been done, connect the monitor(s), keyboard(s), and mouse (mice) to the MONITOR/KEYBOARD/MOUSE port(s) of your master device(s) as outlined in Section 3.2.2.

2.Use ServSwitch-to-ServSwitch Expansion Cables (see Section 3.2.4) to connect all your submaster units to the master unit’s CPU ports, beginning with the port labeled CPU 1 and continuing with CPU 2, CPU 3, etc. (Avoid installing submasters with different numbers of CPU ports on the same master; if possible, every Serv unit in your cascade should have the same number of ports.)

3.Using CPU Adapter Cables, attach your computers to available CPU ports: the first computer into the port identified as CPU 1, CPU #2 into its port, etc. (see Section 3.2.3). The computers should all be OFF; do not turn them ON yet.

4.Attach the power supplies to the master(s) and to the submasters. Plug in the power supplies, but do not turn the master(s) or submasters ON.

5.Turn ON all of the submaster units, then the master unit(s). They should boot normally, but if the firmware in any of the units has become corrupted— probably as the result of a firmware upgrade going wrong—the affected unit will display this message on all attached monitors that have it selected:

Kernel is bad, load new kernel through serial port

If you see this, you will need to download correct firmware to the affected unit as described in Section 4.4.3, starting at the point at which the unit is ready to

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