Cisco Systems UBR900 specifications Configuring the Cisco uBR900 Series Cable Access Routers

show controllers cable-modem mac

Table 12 show controllers cable-modem MAC State Field Descriptions (continued)

Field	Description
Scrambler Seed	15-bit seed value loaded at the beginning of each burst after the register has been
	cleared. Not used if scrambler is off.
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 uBR900 series 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 uBR900 series has access to the HFC network.
Vendor ID	Unique identifier specifying the cable modem manufacturer.
Auth. Wait Timeout	Number of seconds the Cisco uBR900 series waits for a reply after sending the
	Authorization Request message to the CMTS.
Reauth. Wait Timeout	Number of seconds the Cisco uBR900 series 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 uBR900 series 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 uBR900 series 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 uBR900. (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 uBR900 series 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.

Configuring the Cisco uBR900 Series Cable Access Routers 101