Specifications

115
Admin Privilege Commands
Command: set
port llr
Description: Enable or disable a fiber port’s Link Loss
Return status.
Syntax: set port llr <chassis> <module[-converter]>
<port> [<remote> <remoteport>] <enable |
disable>
Note: Not available on all modules. When enabled,
the fiber port’s transmitter shuts down if its
receiver fails to detect a valid receive link. LLR
should only be enabled on one end of the link
and is typically enabled on either the
unmanaged or remote device. Do not enable
LLR on both ends of a configuration, otherwise
the link will never be established.
Example: Console>set port llr 2 2 2 disable
LLR successfully set.
Command: set
port loopback
Description: Enable or disable the loopback feature on a
TDM or access line card. For an access line
card, this mode allows a port to return its
incoming data back to the sender, while
continuing to receive and transmit management
packets. The management packets are not
looped back to the sender, only the data is
returned. For a TDM card, the local copper or
fiber port can be configured to loop back its
incoming data. For a T3/E3 card, the incoming
data is also transmitted to the remote device.
Syntax: set port loopback <chassis> <module> <port>
[<remote> <remoteport>] <enable | disable>
Note: For an access line card, loopback can only be
applied to one port at a time because when you
enable loopback on a port, the other port on the
module is automatically disabled (no link).
Loopback can only be set on the fiber port. For
a T1/E1 card, loopback can be applied to one
or both ports simultaneously. For a T3/E3 card,
loopback cannot be applied simultaneously.