Explanation
VTAM® issues
this message as part of a group of messages in response to a DISPLAY
EE or DISPLAY EEDIAG command that specifies HOSTNAME filters, or in
response to a DISPLAY EEDIAG, TEST=YES command. This message is
the first in various message groups. This message can also be contained
in other message groups headed by message IST2001I, IST2002I, IST2065I,
IST2066I, or IST2130I. See the explanation of those messages for
a complete description. A complete description of the message groups
headed by this message follows.
The following message group
is issued when VTAM accepts
the DISPLAY EE or DISPLAY EEDIAG command that specifies HOSTNAME
filters:
IST2119I ENTERPRISE EXTENDER DISPLAY CORRELATOR: correlator
[IST2067I EEDIAG DISPLAY ISSUED ON date AT time]
IST2120I HOSTNAME RESOLUTION IN PROGRESS
IST314I END
The following message group is issued
by VTAM when host name resolution
processing successfully completes for a DISPLAY EE command that specifies
HOSTNAME filters:
IST2119I ENTERPRISE EXTENDER DISPLAY CORRELATOR: correlator
IST2121I HOSTNAME RESOLUTION COMPLETE
[IST1680I type IP ADDRESS ip_address]
[IST1910I LOCAL HOSTNAME value]
[IST1911I value]
[IST1680I type IP ADDRESS ip_address]
[IST1909I REMOTE HOSTNAME value]
[IST1911I value]
IST314I END
The following message group is issued
by VTAM when host name resolution
processing successfully completes for a DISPLAY EEDIAG command that
specifies HOSTNAME filters:
IST2119I ENTERPRISE EXTENDER DISPLAY CORRELATOR: correlator
IST2121I HOSTNAME RESOLUTION COMPLETE
[IST1680I type IP ADDRESS ip_address]
[IST1910I LOCAL HOSTNAME value]
[IST1911I value]
[IST1680I type IP ADDRESS ip_address]
[IST1909I REMOTE HOSTNAME value]
[IST1911I value]
[IST2023I CONNECTED TO LINE linename]
[IST2126I CONNECTIVITY TEST IN PROGRESS]
IST314I END
The following message group is issued
by VTAM when host name resolution
failure occurs for a DISPLAY EE or DISPLAY EEDIAG command that specifies
HOSTNAME filters:
IST2119I ENTERPRISE EXTENDER DISPLAY CORRELATOR: correlator
IST2121I HOSTNAME RESOLUTION COMPLETE
[IST1893I NAME-TO-ADDRESS RESOLUTION FAILED]
[IST1680I type IP ADDRESS ip_address]
[IST1910I LOCAL HOSTNAME value]
[IST1911I value]
[IST1893I NAME-TO-ADDRESS RESOLUTION FAILED]
[IST1680I type IP ADDRESS ip_address]
[IST1909I REMOTE HOSTNAME value]
[IST1911I value]
IST314I END
The following message group is issued
by VTAM when it accepts a DISPLAY
EEDIAG,TEST=YES command that did not specify HOSTNAME filters:
IST2119I ENTERPRISE EXTENDER DISPLAY CORRELATOR: correlator
IST2067I EEDIAG DISPLAY ISSUED ON date AT time
IST1680I type IP ADDRESS ip_address
IST1680I type IP ADDRESS ip_address
IST2023I CONNECTED TO LINE linename
IST2126I CONNECTIVITY TEST IN PROGRESS
IST314I END
IST1680I - This message is displayed for the following reasons:
- When host name resolution is required to process the display command
and the name-to-address function fails for the local host name, this
message is issued to display the remote IP address. This IP address
might have been specified as input using the IPADDR filter, or it
might have been acquired through the host name resolution function.
- When host name resolution is required to process the display command
and the name-to-address function fails for the remote host name,
this message is issued to display the local IP address. This IP
address might have been specified as input using the IPADDR filter,
or it might have been acquired through the host name resolution function.
- When a D NET,EEDIAG,TEST=YES command is entered that did not specify
host name filters, this message is issued to display the local and
remote IP addresses used for the EE connectivity test. In this
case, the first occurrence of this message identifies the local IP
address and the second occurrence identifies the remote IP address.
- In the message text:
- type
- Indicates which IP address is being displayed. The value is either
LOCAL or REMOTE.
- ip_address
- Indicates the IP address.
IST1893I - This message is the first in a group of messages displayed when
resolution of a host name into an IP address is attempted but was
unsuccessful.
- The following message group is issued by VTAM when host name resolution fails for the
local host name:
IST1893I NAME-TO-ADDRESS RESOLUTION FAILED
IST1910I LOCAL HOSTNAME value
[IST1911I value]
[IST1680I type IP ADDRESS ip_address]
[IST1909I REMOTE HOSTNAME value]
[IST1911I value]
IST314I END
Result: If host name resolution
fails for the local host name, VTAM also
displays the information available for the REMOTE filter. This information
is presented in the optional messages IST1680I, IST1909I, and IST1911I.
- The following message group is issued by VTAM when host name resolution fails for the
remote host name:
[IST1680I type IP ADDRESS ip_address]
[IST1910I LOCAL HOSTNAME value]
[IST1911I value]
IST1893I NAME-TO-ADDRESS RESOLUTION FAILED
IST1909I REMOTE HOSTNAME value
[IST1911I value]
IST314I END
Result: If host name resolution
fails for the remote host name, VTAM also
displays the information available for the LOCAL filter. This information
is presented in optional messages IST1680I, IST1910I, and IST1911I.
IST1909I - In the message text:
- value
- The host name supplied to the name-to-address function that is
used to acquire the remote IP address. The remote IP address is then
used to process the display command. If the host name is longer
than 44 characters, then the first 44 characters are displayed as
the value value and the remaining characters are
displayed in one or more IST1911I messages.
IST1910I - In the message text:
- value
- The host name supplied to the name-to-address function that is
used to acquire the local IP address. The local IP address is then
used in the processing of the display command. If the host name
is longer than 45 characters, then the first 45 characters are displayed
as the value value and the remaining characters
are displayed in one or more IST1911I messages.
IST1911I - In the message text:
- value
- The continuation of the value value on messages
IST1909I and IST1910I. Message IST1911I is repeated as many times
as necessary to display the entire character string.
IST2023I - In the message text:
- linename
- The name of the Enterprise Extender line that VTAM is using to perform an Enterprise Extender
connectivity test.
IST2067I - The date and time values
specify when this DISPLAY EEDIAG command was issued. See DATE and TIME formats for information about the date and time values.
IST2119I - In the message text:
- correlator
- A unique display correlator associated with this DISPLAY EE or
DISPLAY EEDIAG command, which requires host name resolution. This
correlator can be used to locate the various message groups associated
with this display command.
IST2120I - This message indicates that name-to-address resolution for the
host name filters has been initiated. When the host name resolution
completes, another IST2119I message group is issued, which includes
message IST2121I.
IST2121I - This message indicates that name-to-address resolution for the
host name filters has completed.
IST2126I - This message is issued when VTAM initiates
an Enterprise Extender connectivity test. When the connectivity test
completes, a message group headed by IST2130I is issued.
System action
If message IST1893I is issued to report a host
name resolution failure, the DISPLAY EE or DISPLAY EEDIAG command
is not performed. Otherwise, the DISPLAY EE or DISPLAY EEDIAG command
processing continues.
Operator response
If message IST1893I is issued to report a
host name resolution failure, save the system log for problem determination
if the correct host name value is being resolved. If you specified
an incorrect host name, specify the correct host name and issue the
display command again.
System programmer response
If message IST1893I is issued to
report a host name resolution failure, and the correct host name
is being specified on the display command, ensure the following:
- The name-to-address resolution mapping for the host name yields
the correct static VIPA address (if on a z/OS® host) of the node that owns the host name.
- If network address translation (NAT) is in use, the name-to-address
resolution mapping for the host name yields the correct NAT address
to ultimately reach the target static VIPA address of the node that
owns the host name.
If the resolution is not correct, update the DNS zone
files or the appropriate local hosts files with the corrected name-to-address
resolution. If the resolution is intended to yield an IPv6 address,
ensure that the TCP/IP stack is enabled for IPv6 processing so that
the resolver searches for IPv6 addresses. See the information about
resolvers in z/OS Communications Server: IP Configuration
Guide for more information about the resolver
function.
User response
Problem determination
Source
z/OS Communications
Server SNA
Module
Routing code
Descriptor code