overhead (SONET)
To set the SONET overhead bytes in the frame header to a specific standards requirement, or to ensure
interoperability with equipment from another vendor, use the overhead command in SONET/SDH configuration
mode. To remove the setting of the SONET overhead bytes from the configuration file and restore the default
condition, use the no form of this command.
overhead {j0| s1s0} byte-value
no overhead {j0| s1s0} byte-value
Syntax Description
Sets the J0/C1 byte value in the SONET section overhead. For interoperability with
Synchronous Digital Hierarchy (SDH) equipment in Japan, use the value 0x1. Default is
0xcc.
j0
Sets the SS bits value of the H1 byte in the SONET line overhead.
Use the following values to tell the SONET transmission equipment the S1and S0 bit:
•
For SONET mode, use 0 (this is the default).
•
For SDH mode, use 2.
Range is from 0 to 3. Default is 0. Values 1 and 3 are undefined.
s1s0
Byte value to which the j1 or s1s0 keyword should be set. Range is from 0 to 255.byte-value
Command Default
byte-value: 0x01 (j0)
byte-value: 0 (sls0)
Command Modes
SONET/SDH configuration
Command History
ModificationRelease
This command was introduced.Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
Use the overhead command to set the SONET overhead bytes in the frame header to a specific standards
requirement.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
876
SONET Controller Commands on the Cisco ASR 9000 Series Router
overhead (SONET)
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