HPlogo Communicator 3000 MPE/iX Release 6.5 (Non-Platform Software Release C.65.00) > Chapter 3 Growth Solution

Increase in Number of TCP Connections

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By Ganesh HS & Chandrashekar MN
Commercial Systems Division

Introduction

Prior to the MPE/iX 6.5 release, TCP on MPE/iX allowed a maximum of 10240 connections. HP has enhanced the TCP module to get up to 20000 connections.

Configuration through NMMGR

You need to configure the machine to allow it to accommodate up to 20,000 connections. The NMMGR screen for configuring the maximum connections looks like this - 
/*-------------------------------------------------------------------------*/
NMMGR/3000 (B.06.00)   Transmission Control Protocol (TCP) Config    Data: Y
When Data Flag is "N", press "Save Data" to create the data record.Command:

Path:  NETXPORT.GPROT.TCP

[N]       Checksum Enabled (Y For Yes, N For No)
[15612]   Maximum Number of Connections
[2  ]     Retransmission Interval Lower Bound (Secs)
[180]     Maximum Time to Wait For Remote Response (Sec)
[10 ]     Initial Retransmission Interval (Secs)
[4  ]     Maximum Retransmissions per Packet
[600]     Connection Assurance Interval (Secs)
[3  ]     Maximum Connection Assurance Retransmissions
File:  NMCONFIG.PUB.SYS
                                                     Save     Help    Prior
                                                     Data             Screen
/*-------------------------------------------------------------------------*/
The field, "Maximum Number of Connections" can now handle up to 20,000 connections.

To reach this screen, "Transmission Control Protocol (TCP) Config" in NMMGR, do the following:

  1. Go to [ Open Config ]

  2. Go to [ NS ]

  3. Go to [ Unguided ]

  4. Go to [ Netxport ]

  5. Go to [ Gprot ]

  6. Go to [ TCP ]

After the re-configuration, stop the network (via NETCONTROL) if it is already started and restart the network. Now TCP is ready to accommodate up to 20,000 TCP connections.



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