CICS Transaction Gateway V5 The WebSphere ... - IBM Redbooks

92 CICS Transaction Gateway V5
In our example, we were using the TCP/IP stack TCPIPMVS on our z/OS
system. However, because we specified ALL for the IPADDRESS of our
TCPIPSERVICE, our CICS region is listening on both TCP/IP stacks.
To display the TCP/IP sockets in use by CICS, you can use the TSO NETSTAT
command as shown in Example 5-6. This will give you similar information that
you got from the client side. The output shows our CICS region listening on port
8018.
Example 5-6 MVS NETSTAT
EZZ2350I MVS TCP/IP NETSTAT CS V1R2 TCPIP NAME: TCPIPMVS 18:25:59
EZZ2585I User Id Conn Local Socket Foreign Socket State
EZZ2586I ------- ---- ------------ -------------- -----
EZZ2587I SCSCPJA1 000085F2 0.0.0.0..8011 0.0.0.0..0 Listen
EZZ2587I SCSCPJA1 000085F4 0.0.0.0..8018 0.0.0.0..0 Listen
EZZ2587I SCSCPJA1 000085F0 0.0.0.0..8010 0.0.0.0..0 Listen
To display the TCP/IP sockets in use by CICS on the TCP/IP stack TCPIPOE,
you can use the OMVS command netstat /a as shown in Example 5-7. The
output shows our CICS region listening on port 8018 on the TCPIPOE stack.
Example 5-7 OMVS netstat
MVS TCP/IP onetstat CS V1R2 TCPIP Name: TCPIPOE 14:48:01
User Id Conn Local Socket Foreign Socket State
------- ---- ------------ -------------- -----
PMAPOE1 00000037 0.0.0.0..111 0.0.0.0..0 Listen
SCSCPJA1 00000B09 0.0.0.0..8078 0.0.0.0..0 Listen
SCSCPJA1 00000D90 0.0.0.0..8018 0.0.0.0..0 Listen
SCSCPJA1 00000B03 0.0.0.0..8010 0.0.0.0..0 Listen
Traceroute
If the ping command fails to reach a host, then the tracert command can be
used to discover more about the problem. Like ping, tracert tests connectivity
between two network hosts; however, tracert lists each router in the network
between the machine running the command and the destination host.
Sometimes an inability to contact a host is due to one of these routers not
forwarding IP traffic, so tracert can be used to discover which router is
preventing a connection to a remote host.
In Example 5-8 on page 93 we traced the route from our Windows workstation to
our z/OS system using the command tracert wtsc66.itso.ibm.com from a
Windows command prompt.