Asset ID:	1-71-1005186.1
Update Date:	2010-07-07
Keywords:

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Solution Type  Technical Instruction Sure

Solution  1005186.1 :   Usage of the console device (/sgcn) on SunFire[TM] High and MidRange Servers  


PreviouslyPublishedAs
207277

Applies to:

Sun Fire 3800 Server
Sun Fire V1280 Server
Sun Fire 4800 Server
Sun Fire 4810 Server
Sun Fire 6800 Server
All Platforms

Goal

The use of /sgcn console device on the SunFire[TM] High and MidRange Servers is
required by Sun. These servers include the following models: SunFire[TM] 3800,
4800, 4810, E4900, 6800, E6900, V1280 and E2900.

Solution

Steps to Follow
Steps to Follow

The SunFire High and MidRange Server products utilize a special console device
called /sgcn. This device setting is used for the "input-device" and "output-
device" to direct the console output.

The SunFire High and MidRange Server platforms have a System Controller,(SC)
which provides a single serial interface to access the platform shell and each
configured domain, (Solaris instance). The SGCN interface was introduced to
allow connection between the System Controller Serial interface and the virtual
console of each domain. The SunFire High and MidRange Servers systems do not
employ a traditional serial interface, (ttya/ttyb), to the domains. The SGCN
device allows domains to be administered via the System Controller (SC).

If the /sgcn device is not used for input and output device settings, and
error will register on the console upon boot:

install-console ERROR: no such device,
LED write value = 0 x 4, 4

Product
Sun Fire 3800 Server
Sun Fire 6800 Server
Sun Fire E2900 Server
Sun Fire V1280 Server
Sun Fire E6900 Server
Sun Fire E4900 Server
Sun Fire 4810 Server
Sun Fire 4800 Server

serengetti, console, ttya, sgcn, /sgcn, system controller, SC
Previously Published As
86846



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