Typical FC frame size for FICON

2011-03-23 Thread R.S.
What is typical FC frame size in FICON environment? I guess there are two different answers - one for disk, the second for tape. Background: I would like to estimate number of BB credits needed for ISL between two FICON switches. -- Radoslaw Skorupka Lodz, Poland -- BRE Bank SA ul. Senat

Re: Typical FC frame size for FICON

2011-03-25 Thread John Ticic
Hello Radoslaw, I'm not sure I can help but here is some information that may be useful. I typically see different average transmit and receive frame sizes during the day (on-line) compared to the evening (batch). I've seen down to 1000 bytes during on-line and around 1700 bytes during batch fo

Re: Typical FC frame size for FICON

2011-03-25 Thread R.S.
John First, I'd like to thank you for the information, I appreciate it. I also have some further questions: 1. How do you measure frame sizez? What tool/monitor you use? 2. Why ISL traffic is more disperse - that means - different? Assuming he ISL is not used for any other traffic but FICON, it

Re: Typical FC frame size for FICON

2011-03-25 Thread John Ticic
Radoslaw, I work for IntelliMagic and use our Vision tool to produce the charts. The information is available in RMF (FCD record 74.7) but you will probably have to turn on the data creation on your switches first. Actually, the most important data that you should be looking at here is the fra