Motorola BSR 2000 manual Cable upstream modem-ranging-delay

BSR 2000 Command Reference Guide Release 1.0

cable upstream modem-ranging-delay

The cable upstream modem-ranging-delay command specifies the maximum cable modem ranging delay in microseconds (usec). The ranging delay of a modem is the timing adjustment that would be sent to the modem if it were located next to the CMTS. For example, if a modem is located next to the CMTS and the show cable modem command indicates a timing offset of 1800 (10MHz clock units), the ranging delay for the modem is (1800 x 100)/1024 = 175-microseconds. The maximum modem ranging delay is used in sizing Initial Maintenance intervals in the upstream and is used for no other purpose. Initial Maintenance is the upstream interval that a cable modem uses to send its initial ranging request message when it wants to join the network. The no cable upstream modem-ranging-delay command restores the default value.

Group Access

MSO

Command Mode

Interface Configuration (cable interface only)

Command Line Usage

cable upstream <NUM> modem-ranging-delay <0-600>no cable upstream <NUM> modem-ranging-delay

Command Syntax

NUM	Upstream port number
0-600	The maximum ranging timing offset in
	microseconds.

Command Default

250 microseconds

11-90 MGBI 526363-001-00 Rev. B