Alan, According to the Redbook: FICON Implementation Guide, SG24-6497, dated: January 2006, Section 1.4.1 "FICON support for cascaded Directors" (Page 11), there is the following note:
Keep in mind that once a 2-byte link address is defined to a channel path, all link addresses defined to be accessed from that same channel path must be 2- byte link addresses (regardless of whether there is only one switch in that link). We chose different channel paths for our cascaded vs. 'direct' FICON control units, however, I got hit by this restriction on the CHPID that had the directors "CUP" address. I have found it easier to just specify 2-byte link addresses for all control units on my FICON directors. It works and avoids confusion. HTH Glenn Miller ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html