31.12.2014 Views

Chapter 1. IBM Flex System FC3171 8 Gb SAN Switch - QLogic

Chapter 1. IBM Flex System FC3171 8 Gb SAN Switch - QLogic

Chapter 1. IBM Flex System FC3171 8 Gb SAN Switch - QLogic

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Timeout values<br />

The switch timeout values determine the timeout values for all ports on the switch.<br />

Table 11 describes the switch timeout parameters. The timeout values must be the<br />

same for all switches in the fabric.<br />

Notes:<br />

Mismatched timeout values will disrupt the fabric. These values should not be<br />

changed unless absolutely necessary. Therefore, the switch must be offline to change<br />

these values. Use the <strong>Switch</strong> Properties dialog to take the switch offline.<br />

Table 1<strong>1.</strong> Timeout values<br />

Parameter<br />

R_A_TOV<br />

E_D_TOV<br />

Description<br />

Resource Allocation Timeout—represents the maximum time a frame<br />

could be delayed in the Fabric and still be delivered. The default is<br />

10000 milliseconds.<br />

Error Detect Timeout—represents the maximum round trip time that<br />

an operation between two N_Ports could require. The default is 2000<br />

milliseconds.<br />

Transparent mode<br />

The Transparent Mode option enables you to toggle between transparent mode and<br />

full-fabric Fibre Channel mode. If the Transparent mode option is selected in the<br />

Advanced <strong>Switch</strong> Properties dialog, the switch converts to a pass-thru module and<br />

operates in transparent mode. If the Transparent mode option is not selected, the<br />

switch remains in full-fabric mode and can be managed along with other switches<br />

in the fabric.<br />

<strong>Chapter</strong> 4. Managing switches 59

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!