HP StorageWorks 4/16 Brocade Troubleshooting and Diagnostics Guide v6.1.0 (53- - Page 93
FICON Fabric Issues, In this FICON issues
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Chapter FICON Fabric Issues 10 This chapter discusses FICON issues, recommended actions, and additional information you should gather to fix your issue. Any information you need to verify that FICON has been set up correctly can be found in the Fabric OS Administrator's Guide. In this chapter •FICON issues 79 •Troubleshooting FICON 80 FICON issues Symptom The Control Unit Port cannot access the switch. Probable cause and recommended action A two byte CHPID (channel path identifier) link is defined using a Domain and Port ID that must remain consistent. Any change in the physical link such as domain or port ID will prevent storage Control Unit access. Use the configure command to verify and set the Insistent Domain ID parameter. FICON:admin> configure Configure... Fabric parameters (yes, y, no, n): [no] y Domain: (1..239) [97] R_A_TOV: (4000..120000) [10000] E_D_TOV: (1000..5000) [2000] WAN_TOV: (0..30000) [0] MAX_HOPS: (7..19) [7] Data field size: (256..2112) [2112] Sequence Level Switching: (0..1) [0] Disable Device Probing: (0..1) [0] Suppress Class F Traffic: (0..1) [0] Per-frame Route Priority: (0..1) [0] Long Distance Fabric: (0..1) [0] BB credit: (1..27) [16] Insistent Domain ID Mode (yes, y, no, n): [yes] configure Fabric OS Troubleshooting and Diagnostics Guide 79 53-1000853-01