Use the LOOP NODE command to test a specified node (other than the
 executor node) in the network.  The parameters are optional and can
 be entered in any order.  You can supply explicit access control
 information for the LOOP NODE command.

 To test the executor, use the LOOP EXECUTOR command.

 LOOP    NODE  node-id      ACCOUNT account
                            COUNT number
                            LENGTH number
                            PASSWORD password
                            USER user-id
                            WITH
                              MIXED
                              ONES
                              ZEROS

1  –  ACCOUNT

 Identifies the user's account for access control verification
 for the designated node.

2  –  COUNT

 Specifies the number of blocks to be sent during loopback
 testing over the node. The count must be a decimal integer in
 the range of 1 through 65535. If the parameter is omitted,
 only one block is looped.

3  –  LENGTH

 Specifies the length (in bytes) of the blocks to be sent
 during loopback testing. The length must be a decimal
 integer in the range of 1 through 4096. If the parameter is
 omitted, a block length of 4096 bytes is used.

4  –  PASSWORD

 Identifies the user's password for access control verification
 for the designated node.

5  –  USER

 Specifies the user's identification for access control
 verification for the designated node.

6  –  WITH

 Specifies the type of binary information to be sent during
 testing. Three types of data can be sent:

                 MIXED
                 ONES
                 ZEROS

 If omitted, a combination of ones and zeros (MIXED) is sent.

7  –  Example

      NCP>SET NODE TESTER CIRCUIT DMC-0
      NCP>LOOP NODE TESTER
         .
         .
         .
      NCP>CLEAR NODE TESTER CIRCUIT

          The first command creates a loop node name (TESTER) for
          the associated circuit, the second command initiates a
          node-level loopback test with the loop node name, and the
          third command removes the loop node name from the volatile
          database when the loopback is completed.