This message indicates that the messages that follow describe part or all of the session path for this session as it was calculated during session initiation. The session path information describes the portion of the route originating at this node, or a subarea node connected to this ICN, and extending towards the CP (SLU). This message subgroup is displayed only if session path data was saved during session initiation and the session initiation fails for either of the following reasons:

• Trial and error routing using an adjacent SSCP table failed. The destination LU was found by an SSCP, but that SSCP rejected the session initiation with a non-reroutable sense code.
• Trial and error routing using an adjacent SSCP table exhausted the table. All adjacent SSCPs were tried, but the destination LU was not known to any of the SSCPs.

A complete description of the message subgroup follows.

IST2103I RSCV TOWARDS SLU
IST1460I TGN  CPNAME             TG TYPE      HPR
IST1461I tgn  cpname             tgtype       hpr
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IST1460I

• This message is a header message for information displayed in message IST1461I.

IST1461I

• The route selection control vector (RSCV) is displayed showing a portion of the route towards the CP (SLU). Multiple IST1461I messages might be needed to display the portion of the route known by this node.
• tgn is the transmission group number.
• cpname is the destination CP name for the transmission group.
• tgtype is the transmission group type. The values for tgtype can be:

  APPN

  Indicates that this TG is an APPN-based TG.

  INTERCHANGE

  Indicates that this TG represents a TG from an interchange node to a subarea node.

  VRTG

  Indicates that this TG is a virtual-route-based TG.

  ISL

  Indicates that this TG is an intersubnet TG.

• hpr corresponds with the HPR start option. The values for hpr can be:

  RTP

  Indicates that this node provides RTP-level HPR support.

  ANR

  Indicates that this node provides ANR-level HPR support.

  *NA*

  Indicates that this node provides no HPR support.

IST2103I

• This message is a header message for information displayed in messages IST1460I and IST1461I.