Motorola BSR 2000, Configuration And Management Manual

Page: 355 / 650

Release 1.0 Configuring the CMTS
526360-001-00 Rev. B MGBI 6-169
MOT#
show cable flap-list sort-interface
Table 6-18 lists the show cable flap-list command output fields and their
descriptions:
Table 6-18 show cable flap-list Command Output Field Display Fields
Field Identification
MAC ID Lists the MAC addresses of the CMs sorted by the flap rate or most
recent flap time. The first six digits in the CM MAC address indicate
the vendor ID of the CM manufacturer, followed by six digits indicating
a unique host address. Each CM MAC address is unique.
Cable IF Detects the cable interface up/down flap. This is the cable interface on
the BSR 2000. It denotes the DOCSIS module number (always 0 for
the BSR 2000), and the downstream and upstream port numbers. The
flap list data can be sorted based on the upstream port number which
is useful when isolating reverse path problems unique to certain
combining groups.
Ins The Insertions Link process is used by a CM to perform an initial
maintenance procedure to establish a connection with the BSR. The
Ins column is the flapping CM’s (re) insertion count and indicates the
number of times the a CM starts and inserts into the network in an
abnormal way. An abnormality is detected when the time between link
re-establishment attempts is less than the user-configured parameter.
This function can identify potential problems in the downstream
interface such as incorrectly provisioned CMs repeatedly trying to
reestablish a link.
Hit The Hit and Miss column fields detect the intermittent upstream; the
keepalive hits versus misses is the number of times CMs do not
respond to the MAC layer keepalive messages. If there are a number
of misses, this points to a potential upstream problem.
Miss
Pow The Power Adjustment column field shows power adjustment
statistics during station maintenance polling. This column indicates the
number of times the BSR tells a CM to adjust the transmit power more
than the configured threshold. If constant power adjustments are
detected, an amplifier problem is usually the cause. The source of
failure is found by viewing CMs either in front or behind various
amplifiers.
• An exclamation point appears when the CM has reached its
maximum power transmit level and cannot increase its power level
any further.
Flap Indicates the number of times the CM has flapped.