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any other suggestion to prevent Digi TS16 devices from "freezing" ?

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does anybody else have some suggestion to solve or identify the reason causing the Digi Portservers to freeze?

running out of ideas here and we're considering to replace Digi devices with Perle...
asked Dec 7, 2015 in Portserver TS by razvan New to the Community (0 points)

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1 Answer

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1. Ensure the latest firmware is applied.
2. If using port sharing:

http://knowledge.digi.com/articles/Knowledge_Base_Article/Troubleshooting-Tips-When-Sharing-a-Serial-Port

3. Check for flow control buffer overflows by issuing "display ports" from the command line of the unit:

http://knowledge.digi.com/articles/Knowledge_Base_Article/What-does-OFC-and-IFC-mean-and-how-do-I-resolve-it

4. If running RealPort, please advise what operating system/version.
answered Dec 7, 2015 by userid0 Veteran of the Digi Community (2,158 points)
1.Latest Digi  driver is installed.
We tried already to exchange the Digi unit with a new one, but this did not helped.

#> show versions

PortServer  TS 16 Rack:

Component           Part-Number     Release-Tag

Boot/Post           82000685        release_82000685_G
Running EOS         82000684        release_82000684_W


2. Port sharing is used and we are actively reading the data from both hosts.

#> show sharing

        current       max
tty     clients     clients     control     timeout    wrpolicy

  1           2           2      shared           0         all
  2           2           2      shared           0         all
  3           2           2      shared           0         all
  4           2           2      shared           0         all
  5           2           2      shared           0         all
  6           2           2      shared           0         all
  7           2           2      shared           0         all
  8           2           2      shared           0         all
  9           2           2      shared           0         all
 10           2           2      shared           0         all
 11           2           2      shared           0         all
 12           2           2      shared           0         all
 13           2           2      shared           0         all
 14           2           2      shared           0         all
 15           2           2      shared           0         all
 16           2           2      shared           0         all

#> show buffers

tty     state  size(kb)   % usage

  1       off        32         0
  2       off        32         0
  3       off        32         0
  4       off        32         0
  5       off        32         0
  6       off        32         0
  7       off        32         0
  8       off        32         0
  9       off        32         0
 10       off        32         0
 11       off        32         0
 12       off        32         0
 13       off        32         0
 14       off        32         0
 15       off        32         0
 16       off        32         0


3. In normal operation, there is no indication for  flow control buffer overflows  (OFC or IFC)
Unfortunately there is no possibility to connect to the Digi Unit  when this “freezing” situation occurs, as TCP/IP access is not possible anymore.

#>  display ports

Serial port activity:

Port     TX    RX    RTS   CTS   DSR   DCD   DTR   RI    OFC   IFC

   1     off   off   on    off   off   off   on    off   off   off
   2     off   off   on    off   off   off   on    off   off   off
   3     off   on    on    off   off   off   on    off   off   off
   4     off   off   on    off   off   off   on    off   off   off
   5     off   off   on    off   off   off   on    off   off   off
   6     off   off   on    off   off   off   on    off   off   off
   7     off   off   on    off   off   off   on    off   off   off
   8     off   off   on    off   off   off   on    off   off   off
   9     off   off   on    off   off   off   on    off   off   off
  10     off   off   on    off   off   off   on    off   off   off
  11     off   off   on    off   off   off   on    off   off   off
  12     on    off   on    off   off   off   on    off   off   off
  13     on    off   on    off   off   off   on    off   off   off
  14     off   off   on    off   off   off   on    off   off   off
  15     off   off   off   off   off   off   on    off   off   off
  16     off   off   on    off   off   off   on    off   off   off


4. We are using Solaris 10 hosts and latest Realport driver version 2.8.5
The problem was noticed for hosts with SPARC and X86 architecture.

Do you have any other suggestion?
Thank you!
Port sharing is not supported with any Unix variants running RealPort. You should use TCP socket communication if port sharing is necessary.
where did you get this info that Port sharing is not supported for Digi PortServer TS series with Realport on Solaris 10?

I know that it is not supported for the new Digi ConnectPort LTS models, (and Raw TCP socket should be used instead for these models)

But for the old Digi PortServer TS8/16 or Digi One, sharing mode should be supported for Solaris 10 and RealPort.
There is also this Redundancy white paper available from Digi:
http://www.digi.com/pdf/wp_redundancy.pdf
Port Sharing works when using TCP sockets and the Windows RealPort drivers, however not when used with Solaris/Unix/Linux RealPort drivers.
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