User's Manual

CHAPTER 8: IBM IPDS Printing

Unsuccessful ping:

EZA04581 Ping V3R1: Pinging host 9.99.12.33

(Use ATTN to interrupt.)

EZA04631 PING: Ping #1 timed out.

8.2.5 H

ANDLING

MVS C

ONNECTIVITY

ROBLEMS

If you encounter problems when pinging the print server from MVS, here’s how to

resolve them:

Ping is Not Successful

If the ping is not successful, verify the following:

• The print server and printer both are powered on.

• The IP address is unique in the TCP/IP network. If the IP address of the MVS

system is not unique, contact your system administrator.

• The Maximum Transmission Unit (MTU) size of the IP packet for the MVS

system is equal to the MTU size of the network printer that is fixed at 1024. To

change the MTU size for the MVS system, change the GATEWAY statement in

the MVS TCP/IP profile and restart TCP/IP to activate the changes. If these

items are in order, consult your system administrator about a possible network

problem.

Ping is Successful

A successful ping usually indicates that the MVS system can communicate with the

print server; however, you might receive a successful ping even though the IP

address of the print server is a duplicate of another IP address. If PSF is unable to

establish a network connection with the print server or if PSF output for the

printer attached to the print server prints elsewhere, follow these steps to

determine whether the IP address of the printer is unique:

1. Turn off the printer.

2. Wait at least 5 minutes for TCP/IP to clear the Address Resolution Protocol

(ARP) tables. (If your installation specified a longer interval on the ARPAGE

configuration statement in the TCP/IP profile, you may need to wait longer.

For information about the ARPAGE statement, refer to the IBM TCP/IP MVS

Customization and Administration Guide.)