How To Collect Switch Information for Troubleshooting

FlashArray Block Services
Audience
Public
Product
FlashArray
FlashArray > Purity//FA
Source Type
Documentation

Sometimes Everpure Support needs to review switch data during performance troubleshooting. The majority of performance problems we've experienced have roots in the SAN topology, configuration, or due to degraded physical connections. Switch data is the most effective available tool for quickly ascertaining problem sources.

Solution

This article goes over the process of log collection, but we do not request that the customer clear any counters as part of this process. Depending on the troubleshooting, you may need a set of logs after the port counters have been cleared, which is determined on a case by case basis. If you need logs after a reset, please direct the customer to clear the port counters, wait for a time period, and then send the logs in.

For information on how to clear the counters, refer to the vendor's documentation.

Both Brocade and Cisco require an ssh client with logging abilities. Here's how to collect that data on various OSes.

Windows

Using putty:

  1. Enter the IP or hostname of the Cisco or Brocade switch:

  2. Make sure logging is turned on for "All session output" and then save the resulting putty.log file to a location of your choice. It is helpful to make the log something relevant unlike my example..:

  3. For Brocade run the command supportshow

  4. For Cisco run the command show tech-support details

macOS

  1. Launch the application "Terminal" (depress the command key and the space bar to open Spotlight, type ter, and the terminal will launch)

  2. SSH to your Brocade or Cisco switch:

    1. For Brocade run supportshow

    2. For Cisco run show tech-support details

  3. When the command completes, just save the text with ⌘S. Or go to the Shell menu and click "Export Text As.."

  4. Save it your desktop

Linux

  1. ssh from the command line to the switch using the tee command redirecting the output to a file. For example:

    
ssh admin@172.16.32.116 | tee /home/user/switchlogs_date_time

  2. For Brocade run the command supportshow

  3. For Cisco run the command show tech-support details

  4. Exit the ssh session then go to your home directory and retrieve the switchlogs_date_time file.

    When you have your putty log or your terminal text exported, zip it up and attach it to email. These are text files and almost always small enough to email.

    If however, you are unable to send it, see FTPS for Uploading Files to Everpure for information on sending it to us via FTPS.