IST1252I
DEFINED NETWORK NODE SERVER LIST, NAME = nnslist

Explanation

This message is part of a group of messages that VTAM® issues in response to a DISPLAY NETSRVR command. A complete description of the message group follows. 
 IST350I    DISPLAY TYPE = NETWORK NODE SERVER LIST
 IST1252I   DEFINED NETWORK NODE SERVER LIST, NAME = nnslist
 IST1253I nodename [sluinit] [enbcast]
 ⋮
 IST924I    --------------------------------------------------------------
[IST1254I  SERVER LIST PROCESSED ORDER = {FIRST|NEXT}
 IST924I    --------------------------------------------------------------]
[IST1255I   OTHER NETWORK NODES ALLOWED AS SERVERS
 IST1253I nodename [sluinit] [enbcast]]
⋮
 IST924I    --------------------------------------------------------------
 IST1256I   CURRENT NETWORK NODE SERVER
 IST1253I nodename [sluinit] [enbcast]
[IST924I    --------------------------------------------------------------]
[IST1672I   CURRENT NETWORK NODE SERVER NOT FOUND IN ACTIVE NETSRVR LIST]
 IST1677I   PREFERRED NETWORK NODE SERVER
 IST1253I nodename [sluinit] [enbcast]
 IST314I    END
IST350I
  • This message identifies the type of information in the display and is always NETWORK NODE SERVER LIST for this message group.
IST1252I and IST1253I subgroup: List of Network Nodes Defined as Servers
  • This message subgroup displays all network nodes that are explicitly defined in the network node server list nnslist.
  • nodename can be one of the following:
    • The network-qualified name of an adjacent network node in the form netid.name.
    • ****NAMELESS**** is displayed if the network node server list contains a nameless entry.
    • NONE is displayed if no network nodes have been explicitly defined as potential servers, and the network node server list does not contain a nameless entry.
  • sluinit is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either SLUINIT=REQ or SLUINIT=OPT.
  • enbcast is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either ENBCAST=NO or ENBCAST=YES.
IST1254I: Order for Processing the Network Node Server List
  • This message is displayed when one or more network nodes have been explicitly defined to act as a server for this end node. It indicates the order in which the network node server list is processed.
    • FIRST indicates that the search for a server begins with the first network node specified on the list.
    • NEXT indicates that the search for a server begins with the network node on the list that follows the last entry that was successfully or unsuccessfully tried.
IST1255I and IST1253I subgroup: List of Other Network Nodes Allowed as Servers
  • This message subgroup is only displayed if SCOPE=ALL was specified on the command. It displays all the network nodes that can act as a network node server for this end node but are not explicitly defined in the network node server list.
  • nodename is the network-qualified name of an adjacent network node in the form netid.name.
    • NONE is displayed in either of the following situations:
      • The network node server list does not contain a nameless entry.
      • The network node service list contains a nameless entry, but there are no other known adjacent network nodes that support CP-CP sessions.
    • sluinit is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either SLUINIT=REQ or SLUINIT=OPT.
    • enbcast is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either ENBCAST=NO or ENBCAST=YES.
IST1256I and IST1253I subgroup: Network Node Currently Selected as Server
  • This message subgroup displays the name of the network node currently selected as this end node's network node server. The name displayed here is the name of an adjacent network node that this end node has most recently determined to be a suitable network node server and with which this end node has either established CP-CP sessions or is in the process of establishing CP-CP sessions. At the time the DISPLAY NETSRVR command displays this name, CP-CP sessions with this network node might not yet be fully active.
  • nodename is the network-qualified name of an adjacent network node in the form netid.name.
    • NONE is displayed if this end node could not find a suitable network node server or could not successfully establish CP-CP sessions with any of the network nodes it found suitable as network node servers.
  • sluinit is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either SLUINIT=REQ or SLUINIT=OPT.
  • enbcast is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either ENBCAST=NO or ENBCAST=YES.
IST1672I
  • This message is displayed in response to a DISPLAY NETSRVR command. VTAM displays the message when the active network node server list does not contain either an explicit entry for the current network node server or a nameless entry.
IST1677I and IST1253I subgroup: Network Node Specified as the Preferred Network Node Server
  • This message subgroup displays the name of the network node specified as the preferred network node server for this end node. The preferred network node server is specified by the NNSPREF start option.
  • nodename is the network-qualified name of an adjacent network node in the form netid.name.
  • NONE is displayed if this end node does not have a preferred network node server.
  • sluinit is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either SLUINIT=REQ or SLUINIT=OPT.
  • enbcast is displayed for a nodename, and is the value specified on the NETSRVR definition statement, or the default value. The values can be either ENBCAST=NO or ENBCAST=YES.

System action

Processing continues.

Operator response

If this message group displays the network node server list as expected, no response is necessary.

If the message group displays unexpected results, save the system log for problem determination.

IST1256I and IST1253I subgroup:
  • If nodename is not the desired server but the network node server list is correct, then deactivate the session to the current server and reactivate the list.
IST1672I
  • If the current network node server is the one desired, activate a network node server list that includes the current network node server. If no network node server list member includes the current network node server, contact the system programmer to code the current network node server in a network node server list member. Then activate that list.

    If the current network node server is not the one desired, deactivate the CP-CP session with the current network node server. The new network node server will be selected from the candidates specified in the active network node server list.

System programmer response

If the message group displays unexpected results:

  1. Correct the network node server list.
  2. Ask the operator to reactivate the modified list by entering the VARY ACT,ID=member_name command where member_name is the name of the definition list member that contains the network node server list.
IST1252I and IST1253I subgroup:
  • If a specific node is missing from the list, add a NETSRVR definition statement that explicitly adds that node to the group of network node server list definition statements.
    Note: List all NETSRVR definition statements that explicitly name a network node before a NETSRVR definition statement that allows any network node to act as server.
IST1254I:
  • If ORDER does not display the desired value, then change the VBUILD,TYPE=NETSRVR definition statement to specify the correct order of server selection.
IST1255I and IST1253I subgroup:
  • By default, when no network nodes are explicitly defined as servers, any network node can be used as long as SLUINIT=OPT is defined on the nameless entry.

    Also, if a NETSRVR definition statement without a specific network node name is included at the end of the definition statements, then any network node is allowed to act as server as long as SLUINIT=OPT is defined on the nameless entry.

    To use only explicitly defined network nodes as servers, build the network node server list with the VBUILD,TYPE=NETSRVR definition statement and explicitly name each network node on an individual NETSRVR definition statement.

IST1256I and IST1253I subgroup:
  • If nodename is not the desired server and the network node server list is not correct, then modify the network node server list with the VBUILD,TYPE=NETSRVR definition statement and explicitly name each network node on an individual NETSRVR definition statement.

    For information on building the network node server list, see the z/OS Communications Server: SNA Resource Definition Reference.

IST1672I
  • If requested by the operator, code the name of the current network node server in a network node server list member.
IST1677I and IST1253I subgroup
  • If nodename is not the network node you want as the preferred network node server for this end node, have the operator change the NNSPREF start option value to the network node that you want.

Routing code

2

Descriptor code

5

Parent topic: IST messages for VTAM network operators IST1200I – IST1599I