Cisco Systems UBR924 manual Show controllers cable-modem mac

		show controllers cable-modem mac
Table 8	Show Controllers Cable-Modem MAC State Field Descriptions (continued)
Field		Description
Maximum Burst Size		Maximum number of mini-slots that can be transmitted during this burst type. When
		the interval type is Short Data Grant, this value must be greater than 0. If this value is
		0, the burst size is limited elsewhere.
Guard Time Size		Amount of time in symbols between the center of the last symbol of a burst and the
		center of the first symbol of the preamble of an immediately following burst in an
		upstream transmission from the Cisco uBR924 to the CMTS.
Last Codeword Length		Indicates whether or not the length of the last codeword is fixed or shortened.
		(1 = fixed; 2 = shortened)
Scrambler on/off		Indicates whether or not a scrambler is enabled in the upstream modulator.
		(1 = on; 2 = off)
Network Access		Indicates whether or not the Cisco uBR924 has access to the HFC network.
Vendor ID		Unique identifier specifying the cable modem manufacturer.
Auth. Wait Timeout		Number of seconds the Cisco uBR924 waits for a reply after sending the
		Authorization Request message to the CMTS.
Reauth. Wait Timeout		Number of seconds the Cisco uBR924 waits for a reply after it has sent an
		Authorization Request message to the CMTS in response to a reauthorization request
		or an Authorization Invalid message from the CMTS.
Auth. Grace Time		Number of seconds before the current authorization is set to expire that the grace
		timer begins, signaling the Cisco uBR924 to begin the reauthorization process.
Op. Wait Timeout		Number of seconds the TEK state machine waits for a reply from the CMTS after
		sending its initial Key Request for its SID’s keying material.
Retry Wait Timeout		Number of seconds the TEK state machine waits for a replacement key for this SID
		after the TEK grace timer has expired and the request for a replacement key has been
		made.
TEK Grace Time		Number of seconds before the current TEK is set to expire that the TEK grace timer
		begins, signaling the TEK state machine to request a replacement key.
Auth. Reject Wait Time		Number of seconds the Cisco uBR924 waits before sending another Authorization
		Request message to the CMTS after it has received an Authorization Reject message.
Assigned SID		Service ID assigned by the CMTS for the corresponding service class.
Max Downstream Rate		Maximum downstream rate in bits per second that the CMTS is permitted to forward
		to CPE unicast MAC addresses learned or configured as mapping to this
		Cisco uBR924. (This does not include MAC packets addressed to broadcast or
		multicast MAC addresses.)
Max Upstream Rate		Maximum upstream rate in bits per second that the Cisco uBR924 is permitted to
		forward to the RF network. This includes packet PDU data packets addressed to
		broadcast or multicast addresses.
Upstream Priority		Relative priority assigned to this service class for data transmission in the upstream
		channel. Higher numbers indicate higher priority.
Min Upstream Rate		Date rate in bits per second that will be guaranteed to this service class on the
		upstream channel.
Max Upstream Burst		Maximum transmit burst in bytes allowed for this service class on the upstream
		channel.
Privacy Enable		Indicates whether or not Baseline Privacy is enabled for this service class.
Ranging Backoff Start		Initial back-off window for initial ranging contention, expressed as a power of 2.
		Valid values are from 0 to 15.

Troubleshooting Tips for the Cisco uBR924 Cable Access Router 51