SCF Reference Manual for the Kernel Subsystem

4 Managing the ServerNet Network
A ServerNet fabric is the communication path for interprocessor messages and processor-to-I/O
device communication. This chapter describes how you use the Kernel subsystem SERVERNET
object type to query the ServerNet X and Y fabrics.
To monitor a ServerNet fabric or connection, refer to the OSM Service Connection or TSM Service
Application. The OSM Service Connection or TSM Service Application lets you view alarms
associated with a fabric and also describes repair actions. For more information, see the OSM
Service Connection or TSM online help.
Obtaining Information About the ServerNet Network
You can use the NAMES, STATUS, and VERSION commands to display different kinds of information
about the ServerNet network. For complete information about the status of ServerNet fabrics, refer
to the OSM Service Connection or TSM Service Application.
• First use the NAMES command to display the names of all ServerNet links to processors on
the system, even if the connecting processors do not exist. For example:
-> NAMES SERVERNET $ZSNET
NONSTOP KERNEL Names \EAST.$ZSNET
SERVERNET
$ZSNET
$ZSNET.X.0 $ZSNET.Y.0
$ZSNET.X.1 $ZSNET.Y.1
$ZSNET.X.2 $ZSNET.Y.2
$ZSNET.X.3 $ZSNET.Y.3
$ZSNET.X.4 $ZSNET.Y.4
$ZSNET.X.5 $ZSNET.Y.5
$ZSNET.X.6 $ZSNET.Y.6
$ZSNET.X.7 $ZSNET.Y.7
$ZSNET.X.8 $ZSNET.Y.8
$ZSNET.X.9 $ZSNET.Y.9
$ZSNET.X.10 $ZSNET.Y.10
$ZSNET.X.11 $ZSNET.Y.11
$ZSNET.X.12 $ZSNET.Y.12
$ZSNET.X.13 $ZSNET.Y.13
$ZSNET.X.14 $ZSNET.Y.14
$ZSNET.X.15 $ZSNET.Y.15
• Then use the STATUS command to display current information about the ServerNet network.
In the sample display, all ServerNet connections on processors 0 through 3 are up. Because
the system consists of four processors, the status of the connections from processors 0 through
3 to processors 4 through 15 is unavailable (UNA), and processors 4 through 15 are down.
ServerNet status terms are defined on page 6-71.
-> STATUS SERVERNET $ZSNET
NONSTOP KERNEL - Status SERVERNET
X-FABRIC
T0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
FROM
0 UP UP UP UP UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA
1 UP UP UP UP UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA
2 UP UP UP UP UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA
3 UP UP UP UP UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA UNA
4 <-DOWN
5 <-DOWN
6 <-DOWN
7 <-DOWN
8 <-DOWN
9 <-DOWN
10 <-DOWN
Obtaining Information About the ServerNet Network 65