Please mark this thread as "Answered" - that will help others looking for similar issues. Glad you got it fixed. Dust is a demon.  glen
We use an EMC CX-600 and a CX0700 SP with four storage servers(RHEL4) in our SAN to teach the course "Storage Area Networks" at Michigan Technological University in Houghton, Michigan. This system has been in running for the past 4 years. It is a non production system used only for educational use. We use it only during the Fall Semester(Sept. -> December).  This is a dual fabric system using one 24 port EMC FC switch for each fabric. One CX-600 channel A port is connected to the top fabric, switch, one CX-600 channel A port is connected to the bottom fabric switch, same for the B channel ports(one to each fabric switch).  Last November the port B3 connection to the bottom switch failed as we were using it. The other fabric is still working, so we were able to complete the semester using that connection.  Now I don't know why the B3 port is off. The status is:  [sat3200student[NAME]-stor1 ~]$ naviseccli -h 172.20.189.200 port -list -sp  Information about each SPPORT:  SP Name:             SP A SP Port ID:          1 SP UID:              50:06:01:60:80:60:03:68:50:06:01:61:00:60:03:68 Link Status:         Up Port Status:         Online Switch Present:      YES Switch UID:          10:00:08:00:88:60:EE:F0:20:19:08:00:88:60:EE:F0 SP Source ID:        6363411  SP Name:             SP A SP Port ID:          0 SP UID:              50:06:01:60:80:60:03:68:50:06:01:60:00:60:03:68 Link Status:         Up Port Status:         Online Switch Present:      YES Switch UID:          10:00:08:00:88:02:09:7A:20:0A:08:00:88:02:09:7A SP Source ID:        6359571  SP Name:             SP A SP Port ID:          3 SP UID:              50:06:01:60:80:60:03:68:50:06:01:63:00:60:03:68 Link Status:         Down Port Status:         DISABLED Switch Present:      NO  SP Name:             SP A SP Port ID:          2 SP UID:              50:06:01:60:80:60:03:68:50:06:01:62:00:60:03:68 Link Status:         Down Port Status:         DISABLED Switch Present:      NO  SP Name:             SP B SP Port ID:          1 SP UID:              50:06:01:60:80:60:03:68:50:06:01:69:00:60:03:68 Link Status:         Up Port Status:         Online Switch Present:      YES Switch UID:          10:00:08:00:88:02:09:7A:20:10:08:00:88:02:09:7A SP Source ID:        6361107  SP Name:             SP B SP Port ID:          0 SP UID:              50:06:01:60:80:60:03:68:50:06:01:68:00:60:03:68 Link Status:         Down Port Status:         DISABLED Switch Present:      NO  SP Name:             SP B SP Port ID:          3 SP UID:              50:06:01:60:80:60:03:68:50:06:01:6B:00:60:03:68 Link Status:         Down Port Status:         DISABLED Switch Present:      NO  SP Name:             SP B SP Port ID:          2 SP UID:              50:06:01:60:80:60:03:68:50:06:01:6A:00:60:03:68 Link Status:         Down Port Status:         DISABLED Switch Present:      NO  [sat3200student[NAME]-stor1 ~]$  So there are two channel A ports connected, this is correct(the other two Channel A ports are not connected). But there is only one Channel B port connected, that is port 1. Port B3 is connected to the switch but the status is link status down, disabled. But the cable is connected to the switch and I have tried replacing the cable with a new one(I did that twice, no change). So how do I turn the port B3 on? The green link light is lit for B3(and for B1) which tells me that the switch is talking to the CX-600 port but the CX-600 disabled the port. How can I turn it on?  Danny Miller(danny[NAME].edu)
Turn on disabled CX600 port