Technical data

6. Install the CCMFB fiber-optic converter in slot opto only, 0/opto,
1/opto, 2/opto,or3/opto, as appropriate.
7. Install a BN39B-01 1-meter (3.3-foot) link cable between the CCMFB
optical converter and the CCMLB linecard.
8. Repeat steps 1 through 7 for each CCMFB module to be installed.
5.6 Running Memory Channel Diagnostics
After the Memory Channel adapters, hubs, link cables, fiber-optic converters,
and fiber-optic cables have been installed, power up the systems and run
the Memory Channel diagnostics.
There are two console level Memory Channel diagnostics, mc_diag and
mc_cable:
• The mc_diag diagnostic:
– Tests the Memory Channel adapters on the system running the
diagnostic.
– Runs as part of the initialization sequence when the system is
powered up.
– Runs on a standalone system or while connected to another system or
a hub with the link cable.
• The mc_cable diagnostic:
– Must be run on all systems in the cluster simultaneously (therefore,
all systems must be at the console prompt).
__________________ Caution __________________
If you attempt to run mc_cable on one cluster member
while other members of the cluster are up, you may crash
the cluster.
– Is designed to isolate problems to the Memory Channel adapter,
BC12N or BN39B link cables, hub linecards, fiber-optic converters,
BN34R fiber-optic cable, and, to some extent, to the hub.
– Indicates data flow through the Memory Channel by response
messages.
– Runs continuously until terminated with Ctrl/C.
– Reports differences in connection state, not errors.
– Can be run in standard or virtual hub mode.
5–12 Setting Up the Memory Channel Cluster Interconnect