Information Technology Reference
In-Depth Information
Table5-2
show interfaces fddi Field Descriptions (continued)
Field
Description
status
(continued)
ILS
—Idle line state, entered upon receipt of four or
five idle symbols.
•
HLS
—Halt line state, entered upon the receipt of 16
or 17 consecutive H symbols.
•
QLS
—Quiet line state, entered upon the receipt of 16
or 17 consecutive Q symbols or when carrier detect
goes low.
•
ALS
—Active line state, entered upon receipt of a
JK
symbol pair when carrier detect is high.
•
OVUF
—Elasticity buffer overflow/underflow. The
normal states for a connected Physical type are
ILS
or
ALS
. If the report displays the
QLS
status, this
indicates that the fiber is disconnected from Physical
B, or that it is not connected to another Physical type,
or that the other station is not running.
•
ECM is...
ECM is the SMT entity coordination management, which
overlooks the operation of CFM and PCM. The ECM state
can be one of the following:
•
out
—Router is isolated from the network.
•
in
—Router is actively connected to the network. This
is the normal state for a connected router.
•
trace
—Router is trying to localize a stuck beacon
condition.
•
leave
—Router is allowing time for all the
connections to break before leaving the network.
•
path_test
—Router is testing its internal paths.
•
insert
—Router is allowing time for the optical
bypass to insert.
•
check
—Router is making sure optical bypasses
switched correctly.
•
deinsert
—Router is allowing time for the optical
bypass to deinsert.
continues
