Datatek DT-4180 - Manual (Page 64)

9 4 8 0 , 4 1 8 0 , 4 2 8 0 , 4 2 8 4 4 0 0 0 X A U s e r M a n u a l
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specification of one or many virtual circuits on the port. This snooping is performed at the
packet layer.
Normally, the packet control and size is displayed in short format. If all of the bytes in the
packet are desired, the [ verbose ] option may be specified.
In order to disable snooping on one or more components of an X.25 port, the OFF option
is specified. The OFF parameter will disable snooping at all levels on the specified X.25
port.
6.2.11 E2A Head of Bridge Analyzer Snooper
Syntax: snoop <E2AHOB Port #> <HOB | OFF | <RMT Range>> [ verbose ]
The snoop command is only available to E2AHOB ports. It implements the E2A Head of
Bridge protocol analyzer. The snoop command may be invoked multiple times with the
results aggregating. Every time the snoop command is invoked, the relative timestamp
is set to zero. The <E2AHOB Port #> is the number of the port to be snooped. The port
must be of type=E2AHOB. The parameter of HOB will select snooping at the Head of
the bridge, the serial port. Any messages received will be displayed, and analyzed. The
remote identifiers to which the message is sent is also identified. The parameter of
<RMT Range> allows the specification of one or many remotes on the port. The
numbering is fixed according to the TCP listen port. When selected, the response
messages from the remotes are also displayed.
If all of the bits in the E2A word and message are desired, the [ verbose ] option may be
specified.
In order to disable snooping on one or more components of an
E2AHOB port, the OFF
option is specified. The OFF parameter will disable snooping at all levels on the
specified
E2AHOB port.
6.2.12 E2A Head of Bridge Mapping Functions
Syntax: map <E2AHOB Port #> [ CLEAR | ADDR | TIMEOUT ]
The map command is only available to E2AHOB ports. The xxxx E2AHOB vertical
service creates and manages a dynamic E2A address map. This allows the remote E-
Tails to be positioned anywhere in the bridge chain, and not necessarily at the end
device. Further, it does not require any configuration due to its dynamic nature. The
address map is used to send the E2A traffic to just a single remote and thereby minimize
the network overhead.
The
map command will display the dynamic E2A address map. All 256 E2A addresses
on the virtual tree are displayed in a 16 x 16 grid. The value of “.” Indicates that this E2A
address is not known at the present time. A numeric value indicates the remote number
that contains the E2A address. Note that a remote number may contain just one
address, the entire E2A address range, or any other permutation. E2A addresses are
unique and will never be contained by more than one remote.
When the
map command is invoked without arguments, it will display the E2A address
map. This is exactly the same function as if the addr argument has been provided.