ServerNet Cluster Manual

Installing and Configuring a ServerNet Cluster
ServerNet Cluster Manual—520575-003
3-34
Connecting the Two-Lane Links
To connect the two-lane links:
1. Remove the black plugs from ports 8 through 11 on the double-wide PICs inside
each switch enclosure.
2. Remove the dust caps from the fiber-optic cable connectors.
3. One cable at a time, connect the cable ends. Table 3-11 shows the cable
connections.
Note. Cluster switch ports 8, 9, 10, and 11 are keyed differently from ports 0 through 7. To
connect the two-lane link cables, you must align the fiber-optic cable connector with the
key on top. See Figure 3-3
on page 3-20.
Note. To avoid generating an alarm, you must connect the two-lane links for both fabrics
within eight minutes. The OSM or TSM incident analysis (IA) software generates an alarm
eventually if both external fabrics do not have the same number of cluster switches.
When a cluster switch is added to an external fabric, the IA checks the peer fabric to
determine if it has the same number of cluster switches. After eight minutes, if one external
fabric has fewer cluster switches, the IA generates a Missing Remote ServerNet Switch
alarm. After eight more minutes, if the external fabric still has fewer cluster switches, the IA
dials out the Missing Remote ServerNet Switch alarm.
If you equalize the number of cluster switches on both fabrics after the alarm is generated
but before the alarm is dialed out, the alarm is deleted and is not dialed out.
Table 3-11. Cable Connections for the Two-Lane Links
Cluster
Switch Port
Connects
to Cluster
Switch Port
X1 8 X2 10
X1 9 X2 11
X1 10 X3 8
X1 11 X3 9
X2 8 X3 10
X2 9 X3 11
Y1 8 Y2 10
Y1 9 Y2 11
Y1 10 Y3 8
Y1 11 Y3 9
Y2 8 Y3 10
Y2 9 Y3 11