EMC Connectrix ED-64M, User Manual

Page: 105 / 476

4
Using the Hardware View
4-19
Monitoring and Managing the Director
–
11 Unresponsive node connected to port
— Possible
causes are:
• Hardware problem on switch or on a connected node
where ELP frames are not delivered, the response is not
received, or a fabric login in (FLOGI) cannot be
received. There may be problems in the switch SBAR.
• Faulty or dirty cable connection.
• Faulty host bus adapters that do not send out an FLOGI
within a reasonable timeframe.
• Reasons for segmentation:
– Incompatible operating parameters; for example,
R_A_TOV or E_D_TOV might be inconsistent.
– Duplicate Domain IDs.
– Incompatible zoning configurations.
– Build fabric protocol error.
– No switch in fabric is capable of being principal switch.
– No response from an attached switch.
– ELP retransmission failure timeout — A switch with a
hardware or link failure attempted to join the fabric and
transmitted multiple ELP (exchange link protocol) frames
to another switch. The failed switch did not receive
responses to the ELP frames and did not receive an FLOGI
frame.
• Reasons for an inactive state:
– Switch speed conflict — The director data speed was set to
2 Gb/sec, but the port supports only 1 Gb/sec operation
because it is on an UPM port card. (All ports on all
installed UPM cards go inactive if the director data speed is
set to 2 Gb/sec.)
To activate the port, either set the director data speed to
1 Gb/sec through the Configure Operating Parameters
dialog box, or replace the UPM card with a UPM card.
– Optics speed conflict — The port data speed was set to
2 Gb/sec, but the director data speed was set to 1 Gb/sec.
To activate the port, set the director data speed to 2 Gb/sec
through the Configure Operating Parameters dialog box.