Interface Configuration
7750 SR OS Interface Configuration Guide Page 377
section-trace
Syntax section-trace {increment-z0 | byte value | string string}
Context config>port>sonet-sdh
Description This command configures the section trace bytes in the SONET section header to interoperate with 
some older versions of ADMs or regenerators that require an incrementing STM ID. You can 
explicitly configure an incrementing STM value rather than a static one in the SDH overhead by 
specifying the z0-increment.
Default byte 0x1
Parameters increment-z0 — Configure an incrementing STM ID instead of a static value. 
byte value — Set values in SONET header bytes. 
Default 0x1
Values 0 — 255 or 0x00 — 0xFF
string string — Specifies a text string that identifies the section.
Values A string up to 16 bytes.
single-fiber
Syntax [no] single-fiber
Context config>port>ethernet
config>port>sonet-sdh
Description This command enables packet gathering and redirection of IP packets from a single fiber (RX) port of 
the Ethernet or SONET/SDH interface and redistributes packets to other interfaces through either 
static routes or policy-based forwarding.
This parameter can be applied in conjunction with the strip-label command. If they are applied 
together, the port must have the single-fiber option configured before it can be associated with an 
interface that is configured with the strip-label option.
Once a port is configured with single-fiber, traffic will no longer be transmitted out of that port. This 
command can be used in conjunction with strip-label.
Default no single-fiber