HP Cisco Nexus 5000 Cisco MDS 9000 Family CLI Configuration Guide - Release 4. - Page 747

Chapter 29 Configuring FICON Displaying FICON Information Send documentation comments to [email protected] Displaying Buffer Information In Example 29-21, the Key Counter column displays the 32-bit value maintained by Cisco MDS switches. This value is incremented when any port changes state in that VSAN. The key counter (a 32-bit value) is incremented when a FICON-related configuration is changed. Host programs can increment this value at the start of the channel program and then perform operations on multiple ports. The director history buffer keeps a log of which port address configuration was changed for each key-counter value. The director history buffer provides a mechanism to determine the change in the port state from the previous time when a value was contained in the key counter. Example 29-21 Displays the History Buffer for the Specified VSAN switch# show ficon vsan 20 director-history Director History Buffer for vsan 20 Key Counter Ports Address Changed 74556 43 74557 44 74558 45 74559 46 74560 47 74561 48 74562 49 74563 50 74564 51 74565 52 74566 53 74567 54 74568 55 74569 56 74570 57 74571 58 74572 59 74573 60 74574 61 74575 62 74576 63 74577 64 74578 74579 74580 1-3,5,10,12,14-16,34-40,43-45,47-54,56-57,59-64 74581 3,5 74582 64 74583 74584 1-3,10,12,14-16,34-40,43-45,47-54,56-57,59-64 74585 1 74586 2 74587 3 Displaying FICON Information in the Running Configuration Example 29-22 displays the FICON-related information in the running configuration. OL-18084-01, Cisco MDS NX-OS Release 4.x Cisco MDS 9000 Family CLI Configuration Guide 29-47