Failed route test

If the explicit route test fails because VTAM® is unable to send the Explicit Route Test RU into the network, a message tells why the test cannot be performed. This message is shown in the following example.

IST510I   ROUTE TEST ### FAILED - reason

If the explicit route test is initiated by VTAM but fails, the messages in Figure 1 show the reason for the test failure.

Figure 1. Output of a failed route test

IST533I   ER 0 FAILED IN ROUTE TEST 8
IST797I              FROM   VIA     ADJACENT       DEST   ER LENGTH
IST644I          ffffffff    TG     aaaaaaaa   dddddddd
IST534I               sss     t          xxx        yyy           1
IST798I              nnnn
IST572I         REJECTING    TG     ADJACENT              ER MASK
IST816I               rrr     g          zzz                 mmmm
IST523I     <ER NOT DEFINED>
            <A REQUIRED TG IS INACTIVE>
            <ER NOT REVERSIBLE>
            <ER EXCEEDS MAXIMUM LENGTH>
            <MIGRATION ER NOT SUPPORTED>
            <MIGRATION NODE DOES NOT SUPPORT THIS ER>
            <MIGRATION NODE ENCOUNTERED>
            <UNEXPECTED TYPE BYTE X'##'>

In this example,

The name of the physical unit which originated the ER_TEST is ffffffff.
The adjacent physical unit is aaaaaaaa.
The name of the destination physical unit is dddddddd.
The subarea number of ffffffff is sss.
The transmission group number is t.
The subarea number of aaaaaaaa is xxx.
The subarea of dddddddd is yyy.
The explicit route length is 1.
The network ID of the node being displayed is nnnn.
The rejecting subarea is rrr.
The transmission group number is g.
The adjacent subarea is zzz.
The explicit route mask is mmmm.