Maximum Connections in PORT, what is the maximum limit?

[Bry Pas]

Dear Tandem experts,

Is there a maximum number of concurrent connections on a single port of NonStop server? If YES, how can we check the current usage and how to increase its limit.
Background info: we have an EFT application (Connex) handling ATM terminals, these terminals are connecting to one port only and currently there are abot 2000+ online terminals that connects concurrently on this port. My knowledge in NonStop System is at beginner level. Appreciate for any feedback or explanation. Thank you in advance.

Regards,

[Bill Honaker]

Post by Bry Pas
Dear Tandem experts,
Is there a maximum number of concurrent connections on a single port of NonStop server? If YES, how can we check the current usage and how to increase its limit.
Background info: we have an EFT application (Connex) handling ATM terminals, these terminals are connecting to one port only and currently there are abot 2000+ online terminals that connects concurrently on this port. My knowledge in NonStop System is at beginner level. Appreciate for any feedback or explanation. Thank you in advance.
Regards,

Bryan,

Just as on any platform, some applications have a limit of concurrent connections.
There is also a practical limit per process and per processor based on particular memory-size limits.
Depending on your model of NonStop and where your network connections are attached,
the parallel architecture allows for usage that is many times larger than the practical limits found in Linux and Windows servers.

If you're having trouble with connections, I'd suggest reaching out to FIS support to see how to correctly configure their application to handle larger networks.

Regards,
Bill

[Randall]

Post by Bill Honaker

Post by Bry Pas
Dear Tandem experts,
Is there a maximum number of concurrent connections on a single port of NonStop server? If YES, how can we check the current usage and how to increase its limit.
Background info: we have an EFT application (Connex) handling ATM terminals, these terminals are connecting to one port only and currently there are abot 2000+ online terminals that connects concurrently on this port. My knowledge in NonStop System is at beginner level. Appreciate for any feedback or explanation. Thank you in advance.
Regards,

Bryan,
Just as on any platform, some applications have a limit of concurrent connections.
There is also a practical limit per process and per processor based on particular memory-size limits.
Depending on your model of NonStop and where your network connections are attached,
the parallel architecture allows for usage that is many times larger than the practical limits found in Linux and Windows servers.
If you're having trouble with connections, I'd suggest reaching out to FIS support to see how to correctly configure their application to handle larger networks.
Regards,
Bill

Also depending on which TCP/IP manage process you are running (and the machine model, number of CLIMs, etc.), you can have the same listening port on multiple CPUs, allowing many more effective connections. This can dramatically increase the capacity of your ATM network especially if you are just running a single stack.

Regards,
Randall

[Bry Pas]

Post by Bill Honaker

Post by Bry Pas
Dear Tandem experts,
Is there a maximum number of concurrent connections on a single port of NonStop server? If YES, how can we check the current usage and how to increase its limit.
Background info: we have an EFT application (Connex) handling ATM terminals, these terminals are connecting to one port only and currently there are abot 2000+ online terminals that connects concurrently on this port. My knowledge in NonStop System is at beginner level. Appreciate for any feedback or explanation. Thank you in advance.
Regards,

Bryan,
Just as on any platform, some applications have a limit of concurrent connections.
There is also a practical limit per process and per processor based on particular memory-size limits.
Depending on your model of NonStop and where your network connections are attached,
the parallel architecture allows for usage that is many times larger than the practical limits found in Linux and Windows servers.
If you're having trouble with connections, I'd suggest reaching out to FIS support to see how to correctly configure their application to handle larger networks.
Regards,
Bill

appreciate your input, Bill.

[JShepherd]

Post by Bry Pas
Dear Tandem experts,
Is there a maximum number of concurrent connections on a single port of Non=
Stop server? If YES, how can we check the current usage and how to increase=
its limit.=20
Background info: we have an EFT application (Connex) handling ATM terminals=
, these terminals are connecting to one port only and currently there are a=
bot 2000+ online terminals that connects concurrently on this port. My know=
ledge in NonStop System is at beginner level. Appreciate for any feedback o=
r explanation. Thank you in advance.=20
Regards,

Are you referring to the listen() queue depth or the max number
of active connections ?

As for the listen queue depth, from the
HP NonStop TCP/IP Programming Manual

"In the NonStop TCP/IP, Parallel Library TCP/IP, NonStop TCP/IPv6, "
"and CIP implementations, the maximum pending connections is always 5."

"listen() "
"queue_length input value; "
" specifies the maximum queue length (number of pending connections)."
" This argument is ignored. "

[Vickwk]

Post by Bry Pas
Dear Tandem experts,
Is there a maximum number of concurrent connections on a single port of NonStop server? If YES, how can we check the current usage and how to increase its limit.
Background info: we have an EFT application (Connex) handling ATM terminals, these terminals are connecting to one port only and currently there are abot 2000+ online terminals that connects concurrently on this port. My knowledge in NonStop System is at beginner level. Appreciate for any feedback or explanation. Thank you in advance.
Regards,

config more comms and tsap to PI prcs in cedstap

[vicky]

Post by Bry Pas
Dear Tandem experts,
Is there a maximum number of concurrent connections on a single port of NonStop server? If YES, how can we check the current usage and how to increase its limit.
Background info: we have an EFT application (Connex) handling ATM terminals, these terminals are connecting to one port only and currently there are abot 2000+ online terminals that connects concurrently on this port. My knowledge in NonStop System is at beginner level. Appreciate for any feedback or explanation. Thank you in advance.
Regards,

config more comms and tsap to PI prcs in cedtsap