z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
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EZB3825T

z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
SC27-3655-01

EZB3825T
name/udp: unknown service

Explanation

A UDP port number for the service name was not assigned in the tcpip.v3r1.ETC.SERVICES data set.

System action

NCPROUTE exits.

Operator response

None.

System programmer response

Verify that the tcpip.v3r1.ETC.SERVICES data set has two entries in the form:
ncproute
port/udp
router
port/udp
The entries must start in column 1 and be in lowercase. Verify that the NCPROUTE service port number is the port being used by the NCP clients. The port value defined in the UDPPORT= keyword on the IPOWNER statement in the NCP generation definition must match the NCPROUTE service port. The default is UDP port 580.

The reserved router service port number is 520 and is required for the NCPROUTE transport of RIP packets to NCP clients, which are responsible for broadcasting the packets to other RIP routers. The router service port number cannot be overridden as a result of an NCP restriction.

Also, verify that port 580 has been reserved for NCPROUTE under the PORT statement in the tcpip.v3r1.PROFILE.TCPIP data set.

Module

NRMAIN

Procedure name

main

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