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Disconnecting the Null Modem Cable

Always log out and disconnect the Null Modem cable from the serial maintenance

port when not in use or when the switch is reset.

Multiple FC HBA Ports in Separate Zones

Multiple FC HBA ports in the same host should be placed in separate zones, or

they might be perceived as potential targets (some HBAs log-in as both host and

target).

CTP Controls Port Lights

Port lights on the edge switch and director products are controlled by the CTP

functionality. Certain activities such as FW updates, IPLing the CTP, or switching

over to the backup CTP (Director) can cause these port lights to extinguish

momentarily until control is reasserted by the CTP. The actual FC traffic is not

affected during these times.

Support for Speed Auto-Negotiate

Currently, Speed Auto-Negotiate is not supported for HA and Failover SAN

configurations and is not recommended in general at this time. The speed should

be hard set to match the attached host or target port capability whenever possible.

Ports May Accumulate Spurious Events

A port may accumulate Invalid transmission word and Bit-Error Threshold Link

Incident events when a transceiver is poorly seated resulting in a poor ground

connection.

Workaround

Reseating the optical transceiver will correct the problem.

Director Release Notes

Known Issues