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Cisco ONS SONET TL1 Command Guide, R6.0
Chapter 1 General Information
1.9.2 CTAG Description
1.9.2 CTAG Description
The correlation tag (CTAG) is included in each command by the user and is repeated by the
NE in the response to allow the user to associate the command and response messages. The valid values
for a CTAG are strings of up to 6 characters comprised of identifiers (alphanumeric, beginning with a
letter) or non-zero decimal numbers (a string of decimal digits with an optional non-trailing “.”).
A zero in the response field is valid when indicating an error; for example, issuing a semi-colon by itself
results in:
TID-000 1998-06-20 14:30:00
M 0 DENY IISP
/* Input, Garbage */
;
1.9.3 TID Description
The TID is the name of the NE where the command is addressed. TID is the Telcordia name for the
system.
1.9.4 Parameter Notes
1. If a parameter is set to a value that is inconsistent with something already in the database, and that
value is not changed to a consistent value then the command will be denied.
2. If a parameter is set to a value that is consistent with what is already in the database, but another
parameter in the same command is incompatible, then the command will be denied.
3. The correct way to issue a command where parameters might be in conflict is to:
a. Issue that command and change all relevant parameters to compatible values,
b. Issue the command again to change the target values.
For example, OC-N is syncmsg=y, to change SDH to y, ED-OCN needs to be called to set
syncmsg=N, and called again to set SDH=y.
4. The attribute defaults have also been presented under RTRV commands, and they can be retrieved
only if the RTRV commands follow the card/entity original provision.
5. The default for an optional field of an ED command is either the provisioned default value or the
last provisioned value in the previous ED command.
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