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Configuring Ethernet TCP/IP

Ethernet TCP/IP Attachment Information

Table 22 lists all configuration items, what each item is used for, and the allowable value options for each item. The factory-set default values are underlined.

Table 22. Ethernet TCP/IP Attachment Items
Configuration Item Description Value Options
Ethernet TCP/IP Installed Specifies if the Ethernet adapter is installed. Yes or No
TCP Port Specifies the TCP socket address of the attachment.
Notes:
  1. Only one address is required for operating a simplex system.
  2. If your installation runs in dual simplex and duplex mode, specify the same TCP Port value for duplex mode as you do for Printer 1 in dual simplex mode. (IBM recommends using the default value of 5001.) Also, make sure you specify a unique value for Printer 2 in simplex mode; Printer 1 and Printer 2 cannot use the same value. (If you use the default value of 5001, for Printer 1, IBM recommends using 5002 as the value for Printer 2.)
  3. The TCP Port numbers specified in the printer configuration must match the PORT numbers assigned in the host PSF system.
  4. Because Printer 1 in a dual simplex system and the complete system in duplex system share a common port number, operational procedures must be defined to distinguish between duplex and dual simplex printing. The easiest way to manage this is to assign separate queues for duplex versus dual simplex output (for PSF/2 and PSF/6000), and to assign at least a unique job class for duplex jobs (for S/390 host PSF systems).
 5001 to 65536
IP Address Specifies the Internet Protocol (IP) address of the printer in dotted decimal format. Get this value from your LAN administrator. This value must match the IP address value in the host PSF configuration.

This value is unique to a duplex system, and is the same regardless of whether the printer is in duplex or dual-simplex mode.

 X.X.X.X where X <= 255.
Subnet Mask Specifies the mask that identifies the local subnet in dotted decimal format. Get this value from your LAN administrator. If you do not have a local subnet, leave this field blank. X.X.X.X where X <= 255
Default Gateway Address Specifies the IP address of the default gateway in dotted decimal format. Get this value from your LAN administrator. X.X.X.X where X <= 255
Standard MTU Size Specifies the Maximum Transmission Unit (MTU) size. The MTU size for Standard Ethernet type ranges from 60 to 1500. 60 to 1500
IEEE802.3 MTU Size Specifies the MTU size for IEEE802.3 Ethernet type. The range is from 60 to 1492. 60 to 1492
Ethernet Type Specifies either the Standard or the IEEE802.3 Ethernet type. Standard or IEEE802.3
Hardware address Specifies the TCP/IP Token Ring adapter ROM address. This address cannot be changed.
Alternate address (Local adapter address) Sets the unique LAN adapter address for the network. The address must be different from other addresses on the LAN.
Note:
New cards are restricted to values from X'4000 0000 0000' to X'FFFF FFFF FFFF'.
 X'0' to X'FFFF FFFF FFFF'
Media Speed This parameter is used only when the Ethernet adapter supports configuration of the media speed. Specific media mode and speed setting can be used if:
  • There is very slow Ethernet throughput
  • The LED indicators are incorrect
  • The printer cannot be contacted using the Ping command.

Because of different Auto Sensing standards used by manufacturers of 10/100 Ethernet adapters, this may cause adapters to not work correctly in all combinations. The quick way to determine this type of problem is to see if the Duplex and 10/100 indicators are inconsistent between the printer and the switch.

Check the LEDs on the printer 10/100 Ethernet adapter card when it is enabled. Note the values for each of the indicators on the adapter.

  • The FDX (Full Duplex) indicator is on when operating in Full Duplex Mode and off when operating in Half Duplex.
  • The 100 indicator is on when operating at 100Mbits and off when operating at 10Mbits.
  • The RCV (Receive) indicator is on when receiving packets from the network.
  • The ACT (Activity) or LNK (LINK) indicators are on when packets are being receive or transmitted over the network.

There should be similar indicators on the switch or system that the printer is connected to, and you should note their values. The Full/Half Duplex and 10/100 indicator values must agree between the printer and the switch to which the printer is connected.

To resolve this, take the switch out of auto negotiation mode an explicitly set the mode and speed at the switch. On the printer, the media mode can be either Half or Full Duplex and the speed can be 10 or 100Mbps. These setting must match those of the switch.

Note:
If the Ethernet adapter does not support media speed configuration, this item is ignored.
  • Auto Negotiation
  • 100BaseT - Full Duplex
  • 100BaseT - Half Duplex
  • 10BaseT - Full Duplex
  • 10BaseT - Half Duplex