Communications Server for z/OS V1R7 TCP/IP Implementation, Volume 1: Base Functions, Connectivity, and Routing

Chapter 3. Base functions 99

FLAGS:

LINKNAME: LOOPBACK

ADDRESS: 127.0.0.1

FLAGS:

INTFNAME: LOOPBACK6

ADDRESS: ::1

TYPE: LOOPBACK

FLAGS:

12 OF 12 RECORDS DISPLAYED

Since we are using a flat network (no dynamic routing) we need to add BEGINRoutes

statements to the stack. The member with the definition change is shown in Example 3-27.

Example 3-27 OBEYFILE member to add the gateway statements

BEGINRoutes

; Direct Routes - Routes that are directly connected to my interfaces

; Destination Subnet Mask First Hop Link Name Packet Size ;

ROUTE 10.10.3.0 255.255.255.0 = OSA20A0LNK mtu defaultsize

ROUTE 10.10.2.0 255.255.255.0 = OSA20c0LNK mtu defaultsize

ROUTE 10.10.3.0 255.255.255.0 = OSA20e0LNK mtu defaultsize

ROUTE 10.10.4.0 255.255.255.0 = IUTIQDF4LNK mtu defaultsize

ROUTE 10.10.4.0/24 = IUTIQDF5LNK mtu defaultsize

ROUTE 10.10.5.0 255.255.255.0 = IUTIQDF6LNK mtu defaultsize

; Default Route - All packets to an unknown destination are routed

;through this route.

; Destination First Hop Link Name Packet Size

ROUTE DEFAULT 10.10.3.1 OSA20A0LNK mtu defaultsize

ROUTE DEFAULT 10.10.2.1 OSA20C0LNK mtu defaultsize

ROUTE DEFAULT 10.10.3.1 OSA20E0LNK mtu defaultsize

ENDRoutes

3.10 Job log versus syslog as diagnosis tool

In the past, we often used the TCP/IP job log to detect problems. Most procedures now send

messages to the syslogd daemon or the MVS console log. Refer to the Communications

Server for z/OS V1R7 TCP/IP Implementation, Volume 2 - Standard Applications,

SG24-7170, for more information about the syslog daemon. Individual server documentation

also provides information about diagnosis.

3.11 Message types: Where to find them

For an explanation of z/OS UNIX and TCP/IP messages or SNA sense codes, refer to the

following publications:

򐂰 Messages with prefix of BPX

You will find the explanations for these messages in z/OS V1R7.0 MVS System

Messages, Vol 3 (ASB-BPX), SA22-7633.

򐂰 Messages with prefix of EZA

For z/OS Communications Server IP, you will find the explanations for these messages in

z/OS V1R7.0 CS: IP Messages Volume 1 (EZA), SC31-8783.