Fibre Channel Analyzer Training

A Fibre Channel Analyzer Training webinar has been scheduled for December 1, 2010 at 1PM Pacific time, and it is free to attend by registering before the start of the webinar.  You can get all of the details at the link below.

Fibre Channel Analyzers and Techniques for Using Them

I’m putting this post up because almost everyone in the SAN Analysis world has been “stuck” using the same brands of expensive FC Analyzers for years, and its time to look at an alternative that works just a well (or perhaps better) and costs much less than the big name systems.

Now I understand being educated, trained, and having used a particular piece of equipment for years, and I know what its like to “become comfortable” with a particular system.  But every now and then it’s good to see what the other guys have come up with.

Here are a few quotes from the site:

“You will be introduced to the challenges of analyzing 8Gb Fibre Channel technology and given practical techniques on how to capture and analyze Fibre Channel traces. When it comes to Fibre Channel analysis, a limited number of tools are available to perform the important function of debugging and analyzing your designs.  … Today, the industry has a new player who has built an excellent tool that not only matches the capabilities of any current products, but adds advanced capabilities such as auto speed negotiation, increased buffer capture capabilities, advanced search functions, and other advanced features that will make your job easier.”

Register before the start date and please mention that you were referred from SANTrainingblog.com.  Here is that link again:

Fibre Channel Analyzers and Techniques for Using Them

Please feel free to leave a comment or any questions you may have.

Be the first to comment - What do you think?  Posted by Greg - November 5, 2010 at 10:00 PM

Categories: SAN Companies   Tags: , ,

Testing FCoE Designs Training

The Testing Fibre Channel over Ethernet (FCoE) Designs webinar series has been re-released by Solution Technology on their website.

This series of webinars was recorded in late 2009, and has been made available again at no cost to students.  All you have to do is register for each of the 1 hour training sessions – with a valid email address – and have a video player that supports .wmv (Windows Media Video).

I recommend getting one video each week so that you can absorb the content of each session.  The content of each session is outlined below.

Part 1: What is FCoE?

* Today’s Data Center: 3 Application Classes, 3 Networks
* Tomorrow’s Data Center: A Single Converged Ethernet
* FCoE: Fibre Channel Encapsulation
* Fibre Channel and FCoE Status
* FCoE Deployment Scenarios

Part 2: FCoE Technology Overview

* FCoE Encapsulation
* FCoE Implementation Approaches
* FCoE Protocols

Part 3: FCoE Architecture Models

* Opening & Recap of Previous Segments
* Fibre Channel and FCoE Architecture Models

Part 4: FCoE Testing and Verification

* Opening & Recap of Previous Segments
* Testing and Verification Challenges
- Design Verification Testing: Stress Testing, Forced Error Testing
- Demonstration of SANBlaze Virtual LUN

Part 5: Initiator and Target Emulation

* Opening & Recap of Previous Segments
* Design Verification Testing
- Initiator Emulation, Target Emulation, VLAN Testing
* Stress Testing
- Multiple Initiator Emulation, Multiple Target Emulation
* Forced Error Testing

To check out the webinar sessions, click the link below, and don’t forget to select the SANTrainingblog.com item where they ask how you heard about the webinars.

Testing FCoE Designs Seminar Series <-CLICK HERE

Please feel free to leave any comments about the series here.

Be the first to comment - What do you think?  Posted by Greg - October 4, 2010 at 1:32 PM

Categories: SAN Companies   Tags: ,

iSCSI Protocol Data Unit (PDU)

iSCSI Protocol Data Unit (PDU) – A PDU is the basic “Information Unit” of the iSCSI world.  PDUs are used to communicate between iSCSI Initiators and iSCSI Targets.  These communications include making iSCSI connections and establishing iSCSI sessions, performing iSCSI Discovery, sending SCSI commands, moving SCSI Data, receiving SCSI Status, and controlling SCSI Task Management functions.

iSCSI Basic Header Segment (BHS)

Almost all iSCSI Protocol Data Units fit within a Basic Header Segment (BHS).  The format is shown below, with the Operation Code (OpCode) highlighted.  That is the field that tell you what the PDU is all about.

iSCSI PDU Basic Header Segment (BHS)

iSCSI PDU Basic Header Segment (BHS)

iSCSI Operation Code (OpCode) List

List of operation codes for iSCSI initiators:

Notice that most of these codes are listed as “request”.  All codes are shown as hexadecimal (hex) by having the “0x” prefix.

  • 0×00 - NOP-Out
  • 0×01 - SCSI Command
  • 0×02 - SCSI Task Management function request
  • 0×03 - Login Request
  • 0×04 - Text Request
  • 0×05 - SCSI Data-Out
  • 0×06 - Logout Request
  • 0×10 - SNACK Request
  • 0×1C-0×1E - Vendor specific codes

List of operation codes for iSCSI Targets:

  • 0×20 - NOP-In
  • 0×21 - SCSI Response
  • 0×22 - SCSI Task Management function response
  • 0×23 - Login Response
  • 0×24 - Text Response
  • 0×25 - SCSI Data-In
  • 0×26 - Logout Response
  • 0×31 - Ready To Transfer (R2T)
  • 0×32 - Asynchronous Message
  • 0×3C-0×3E - Vendor specific codes
  • 0×3F - Reject

To find the details of each iSCSI Protocol Data Unit, you will have to “look up” the PDU, either in some reference book, or on this site, as details will be added in the future.

If you have any preferences for which PDUs are covered first, please leave a comment below.

0×20

NOP-In

0×21

SCSI Response

0×22

SCSI Task Management function response

0×23

Login Response

0×24

Text Response

0×25

SCSI Data-In

0×26

Logout Response

0×31

Ready To Transfer (R2T)

0×32

Asynchronous Message

0×3C-0×3E

Vendor specific codes

0×3F

Reject

Be the first to comment - What do you think?  Posted by Greg - September 9, 2010 at 3:33 PM

Categories: Glossary   Tags: ,

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