ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-65
Connecting the Four-Lane Links
5. One cable at a time, connect the cable ends. Table 4-19 on page 4-65 shows the
cable connections.
6. Check the link-alive LED near each PIC port. The link-alive LEDs should light a few
seconds after the cable is connected at both ends. If the link-alive LEDs do not
light:
•
Make sure the dust caps are removed from the cable ends.
•
Try reconnecting the cable, using care to align the key on the cable plug with
the PIC connector.
•
If possible, try connecting a different cable.
7. Continue until all the cables are connected.
Note. To avoid generating an alarm, you must connect the four-lane links for both fabrics
within four minutes. The TSM incident analysis (IA) software generates an alarm
eventually if one external fabric has two cluster switches but the other external fabric has
only one cluster switch.
When a cluster switch is added to an external fabric, the IA checks the peer fabric to
determine if it has two cluster switches. After four minutes, if only one external fabric has
two cluster switches, the IA generates a Missing Remote ServerNet Switch alarm. After
four more minutes, if the peer fabric still does not have two cluster switches, the IA dials
out the Missing Remote ServerNet Switch alarm.
If a second cluster switch is added to the peer fabric after the alarm is generated but
before the alarm is dialed out, the alarm is deleted and is not dialed out.
Table 4-19. Four-Lane Link Connections for the Split-Star Topology
√
Cluster
Switch Port
Connects to
Cluster Switch Port
X1 8 X2 8
X1 9 X2 9
X1 10 X2 10
X1 11 X2 11
Y1 8 Y2 8
Y1 9 Y2 9
Y1 10 Y2 10
Y1 11 Y2 11