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If one link (in this case between the switch and the storage controller) is observing errors (in any direction) the new ELS frame would increment that particular LESB counter value and z10? If it is zoning, it seems odd that the name server in the switch would tell you the n-port id if the target port wasn't in your zone. Appalling state of Storage Networks Tag CloudBNA bottleneckmon brocade buffer credits cisco cloud data centre decoding disk encoding errors Ethernet event fabric fabrics FabricWatch FCoE fibre channel fillwords fill words firmware

This is still much better than any external method of collecting fibre-channel port errors and having an out-of-band query and policy method. Shockley, Gerard C Re: XIV on LoZ ??? Each ingress port (RX port on each switch) which this frame traverses and increment the counters with its own values. Which machine?

So lets look at an example. z10? Storage & BeyondAbsolum theme by Theme4Press•Powered by WordPress Advertisment ad adsense adlogger Skip to site navigation (Press enter) Re: FCP port closed Rafal Hanzel Fri, 19 Nov 2010 00:29:06 -0800 Thanks Please try the request again.

Communication between a zSeries FICON channel and a FICON-supported control unit (CU) uses the Fibre Channel standard. So how does this need to work. And rightfully so. hmm..

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switched? We have the most experience with IBM storage. Generated Sat, 15 Oct 2016 18:29:47 GMT by s_ac15 (squid/3.5.20) Pozdrawiam/Best regards, Rafał Hanzel Programista systemowy, Dział Badań i Rozwoju Systemów Komputerowych Tel. +48 32 3589246, Fax +48 32 3589277, email: [email protected] Tel.

It also has the problem that path errors can be bursty depending on load and/or fabric behaviour. This is an ANSI-standard architecture consisting of the Fibre Channel Framing and Signaling Interface (FC-FS). (Note: The ANSI-standard architecture is found at FICON is a higher-level architecture (FC-SB-2) that uses Your IOCDS is ok. You can imagine that if all ports are able to do this in hardware you can achieve a much finer granularity on timing and hosts can respond much quicker on errors.

The second advantage of a divisional factor is that there will be a consistent averaging across all paths in case you have a larger meshed fabric and thus it will provide Fibre-Channel relies on upper level protocols (like SCSI) to re-submit the command and that's about it. Which storage? I'm working out the details w.r.t.

Most switches and storage arrays have login limits. This allows the timing interval of each ELS frame to be inline with the capabilities of the end-to-end path. We're not too sure this is the problem because we don't know which switch you might be using. From the FICON-channel optical port (N_Port) theres a twin fiber-optical connection that transmits and receives fibers from the N_Port to a FICON-switch optical port (F_Port).

When the target receives the frames it flips the SID and DID and send it back to the host. First failure data capture is the zSeries* fiber connectivity* (FICON) channels approach to capturing error information at the time of a FICON I/O operation failure. Your cache administrator is webmaster. Search Now Advertisement Mainframe > Administrator > Networks Bringing Voice and Data Together With VoIP Getting Enough Fibre?

Ray Higgs System z FCP Development Bld. 706, B24 2455 South Road Poughkeepsie, NY 12601 (845) 435-8666, T/L 295-8666 [email protected] ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send z196? Please try the request again. FICON Express4 4 KM LX (Feature codes 3324) > Which operating system?

Mike Shorkend Re: XIV on LoZ ??? Frames will just traverse one or the other irrespective of which patch is chosen by the host software. Such problems would prevent word sync, speed negotiation and fabric login. The editorial content of IBM Systems Magazine is placed on this website by MSP TechMedia under license from International Business Machines Corporation. ©2016 MSP Communications, Inc.

The system returned: (22) Invalid argument The remote host or network may be down. The reverse communication (CU-to-channel) goes from the FICON CU N_Port to the switch F_Port to the other switch F_Port and then to the FICON-channel N_Port. Fibre-Channel requires very high quality hardware as per FC-PI standard and a BER (Bit Error Rate) of less than 10^12 is not tolerated. In addition, when an error is detected at either N_Port, the channel or the CU aborts the FICON I/O operation by sending an abort sequence.

Given the fact this frame is still part of the same FC exchange it will also traverse the same path back so an accurate total error count of that path can but of course I'm going to try it tomorrow again. It therefore has no impact on any switch and/or external management application and is also not relying on network (TCP/IP) related security restrictions, Ethernet boundaries caused by VLANS etc or any Jakiekolwiek jej ujawnianie, rozpowszechnianie, bądź kopiowanie jest zabronione.

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