1 – Loopback application
Starts a loop test between the loopback applications on the
specified source and destination nodes. The node keyword
specifies the node from which the loop messages are sent. If
you omit this keyword, the test is performed from the node on
which you issue the loop command. The name or address argument
specifies the node whose loop mirror is used to reflect the
messages back to the originator. Specify either the name or
address (but not both).
address tower-set
count integer
loop [node node-id] loopback application format hex-string
length integer
name full-name
1.1 – Characteristics
o address tower-set
Number of the destination for loopback messages, in the form
of a protocol tower. Specify either this argument or the name
argument.
o count integer
Default: 1 Value: 0-4294967295
Number of loop messages to be sent to the loop mirror. The test
is complete when this number of loop messages has been reflected
back by the loop mirror.
o format hex-string
Default: 55 Value: 00-FF
Content of the data field of a loop message. Enter a pair of
hexadecimal digits. Each octet in the data field of a loop
message has this value.
o length integer
Default: 40 Value: 0-65534
Length, in octets, of the data field in each loop message.
o name full-name
DNS name of the node to which loopback messages are sent. Specify
either this argument or the address argument, but not both.
2 – MOP
2.1 – Circuit
Performs a loop operation with another system. If you optionally
chose to enter a Client Name in the previous menu, the default loop
parameters for this operation were obtained by looking up the
information for that MOP Client, and those parameters are present in
the current display.
The required arguments for this loop operation are:
o Address
The LAN address of the target node on the circuit named in the
circuit argument.
o Circuit
The MOP circuit you have currently selected for the loop operation.
The optional arguments for this loop operation are:
o Client
A client entity to be used for this operation, if you provided one
in the previous display.
o Count
An integer representing the number of messages to be looped.
On failure of the loop test, a the count of messages
successfully looped will be displayed.
o Format
Value of each byte in the test data part of each loop message.
The default results in alternating 0 and 1 bits.
o Length
Integer representing length of the test data part of each loop
message. The maximum and minimum permitted values depend on the
particular data link in use.
o Assistance Type
Degree of loopback assistance required, for LAN circuits only.
Valid values are none, transmit, receive, and full.
o Assistant Address
LAN address to be used as a loopback assistant. The involvement
of the assistant depends on the assistance type parameter. For
assistance of type none, no assistant is needed, and is ignored
if specified. For other values, an assistant is required. If not
specified, an assistant is located by first sending a request to
the loopback assistant multicast address.
o Assistant System
A MOP Client entity, from which an assistant address is obtained.
Meaningful for LAN circuits only, see assistant address.
Pressing the OK button will cause the loop command to be executed and
will return control back to the main window.
Pressing the RESET button will cause all the arguments to be reset back
to the state they were in when you first entered this display.
Pressing the CANCEL button will return you to the main window. No loop
command will be issued.
2.2 – Client
Performs a loop operation with the specified client system.
The required arguments for this loop operation are:
o Address
The LAN address of the target node on the circuit named in the
circuit argument.
o Circuit
The MOP circuit over which this loop operation is to be performed.
The optional arguments for this loop operation are:
o Count
An integer representing the number of messages to be looped.
On failure of the loop test, a the count of messages
successfully looped will be displayed.
o Format
Value of each byte in the test data part of each loop message.
The default results in alternating 0 and 1 bits.
o Length
Integer representing length of the test data part of each loop
message. The maximum and minimum permitted values depend on the
particular data link in use.
o Assistance Type
Degree of loopback assistance required, for LAN circuits only.
Valid values are None, Transmit, Receive, and Full.
o Assistant Address
LAN address to be used as a loopback assistant. The involvement
of the assistant depends on the assistance type parameter. For
assistance of type none, no assistant is needed, and is ignored
if specified. For other values, an assistant is required. If not
specified, an assistant is located by first sending a request to
the loopback assistant multicast address.
o Assistant System
A MOP Client entity, from which an assistant address is obtained.
Meaningful for LAN circuits only, see assistant address.
Pressing the OK button will cause the loop command to be executed and
will return control back to the main window.
Pressing the RESET button will cause all the arguments to be reset back
to the state they were in when you first entered this display.
Pressing the CANCEL button will return you to the main window. No loop
command will be issued.