R2511-HP MSR Router Series Interface Command Reference(V5)

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j1 flag-value: Path trace message, a higher-order path overhead byte used to test continuity of the
connection between two interfaces at the path level. If the sdh keyword is configured, the flag-value
argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a
string of 1 to 62 characters.
sdh: Sets framing format to Synchronous Digital Hierarchy (SDH).
sonet: Sets framing format to Synchronous Optical Network (SONET).
Usage guidelines
The default overhead bytes are as follows:
• c2—0x13
• j0 (SDH)—Null
• j1 (SDH)—Null
Inconsistency between the c2 and j1 settings on the sending and receiving ends causes alarms.
The J0 byte can be any character in the network of the same carrier. If networks of two carriers are
involved, however, the sending and receiving devices at network borders must use the same J0 byte.
Examples
# Set the SDH overhead byte J0 of ATM interface ATM 4/0.
<Sysname> system-view
[Sysname] interface atm 4/0
[Sysname-Atm4/0] flag j0 sdh ff
Related commands
display interface pos
frame-format
Use frame-format to set the framing format for an ATM OC-3c/STM-1 interface.
Use undo frame-format to restore the default
Syntax
frame-format { sdh | sonet }
undo frame-format
Default
The framing format is SDH STM-1.
Views
ATM OC-3c interface view, ATM STM-1 interface view
Default command level
2: System level
Parameters
sdh: Sets the framing format to SDH STM-1, the synchronous transport module-level 1 (STM-1) of
synchronous digital hierarchy (SDH).
sonet: Sets the framing format to SONET OC-3, the optical carrier level three (OC-3) of synchronous
optical network (SONET).