|
|
This chapter describes the function and displays the syntax for commands used to configure the Cisco uBR7246 Universal Broadband features. For more information about defaults and usage guidelines, see the corresponding chapter of the Voice, Video, and Home Applications Command Reference.
To move a cable modem to another channel, use the cable channel-change cable interface configuration command. Use the no form of this command to disable this feature.
cable channel-change sid channel
sid | Service identifier (SID) of the cable modem. Valid entries are from 1 to 8191. |
channel | User-defined or user-selected; in the current release, there is only one upstream channel available. Therefore, this value is always 0. |
To set the MPEG framing format for a downstream port on a cable modem card to either Annex A (Europe) or Annex B (North America), use the cable downstream annex cable interface configuration command.
cable downstream annex {A | B}
A | Annex A. The downstream is compatible with the European MPEG framing format specified in ITU-TJ.83 Annex A. |
B | Default. The downstream is compatible with the North American MPEG framing format specified in ITU-TJ.83 Annex B. |
To set the fixed center frequency for downstream RF carrier in Hz, enter the cable downstream frequency cable interface configuration command. Use the no form of this command to set no fixed center frequency.
cable downstream frequency down-freq-hz
down-freq-hz | The known center frequency of the downstream carrier in Hz. The valid range is 54000000 to 1020000000 Hz. |
To activate a downstream port on a cable modem card for digital data transmissions over the HFC network, use the cable downstream if-output cable interface configuration command. Use the no form of this command to disable the 44 MHz intermediate frequency (IF) carrier.
cable downstream if-outputTo set the downstream interleave depth, use the cable downstream interleave-depth cable interface configuration command. Use the no form of this command to restore the default.
cable downstream interleave-depth {8 | 16 | 32 | 64 | 128}
8 | 16 | 32 | 64 | 128 | Indicates the amount of time (in milliseconds) that defines the downstream interleave depth. The default is 32. |
To set the modulation rate for a downstream port on a cable modem card, use the cable downstream modulation cable interface configuration command:
cable downstream modulation {64qam}
64qam | Modulation is 6 bits per symbol. |
To set the megasymbols per second (Msps) rate for a downstream port on a cable modem card, use the cable downstream symbol-rate cable interface configuration command. Use the no form of this command to restore the default.
cable downstream symbol-rate number
number | Number of megasymbols per second (Msps) rate for a downstream port. The valid range is 0 to 6000000 Msps. |
To limit the amount of time that a cable modem can request a channel for the first time from the Cisco uBR7246, use the cable insertion-interval cable interface configuration command. Use the no form of this command to restore the default value fro this command.
cable insertion-interval milliseconds
milliseconds | Amount of time in milliseconds the cable modem can request a channel. Valid entries are from 100 to 2000 milliseconds. |
To activate upstream IP broadcast echo so the Cisco uBR7246 can echo broadcast packets, use the cable ip-broadcast-echo cable interface configuration command. Use the no form of this command to disable the upstream IP broadcast echo.
cable ip-broadcast-echoTo enable IP multicast echo, use the cable ip-multicast-echo cable interface configuration command. Use the no form of this command to disable IP multicast echo.
cable ip-multicast-echoTo set key encryption keys (keks) grace-time values for baseline privacy on an HFC network, use the cable privacy kek grace-time global configuration command. Use the no form of this command to restore the default value.
cable privacy kek grace-time [seconds]
seconds | (Optional) Number of seconds defining the length of key encryption grace-time. Valid range is 300 to 1800 seconds. Default is 600 seconds. |
To set key encryption keys (keks) life-time values for baseline privacy on an HFC network, use the cable privacy kek life-time global configuration command. Use the no form of this command to restore the default value.
cable privacy kek life-time [seconds]
seconds | (Optional) Number of seconds defining the length of the key encryption life-time.Valid range is 86400 to 6048000. Default is 604800 seconds. |
To set traffic encryption keys (teks) grace-time values for baseline privacy on an HFC network, use the cable privacy tek grace-time global configuration command. Use the no form of this command to restore the default value.
cable privacy tek grace-time [seconds]
seconds | (Optional) Number of seconds defining the length of traffic encryption grace-time. Valid range is 300 to 1800 seconds. Default is 600 seconds. |
To set traffic encryption keys (teks) grace-time and life-time values for baseline privacy on an HFC network, use the cable privacy tek life-time global configuration command. Use the no form of this command to restore the default value.
cable privacy tek life-time [seconds]
seconds | (Optional) Number of seconds defining the length of the traffic encryption lifetime.Valid range is 1800 to 6048000. Default is 43200 seconds. |
To activate cable proxy Address Resolution Protocol (ARP) on the cable interface, use the cable proxy-arp cable interface configuration command. Use the no form of this command to disable this feature.
cable proxy-arpTo enable cable modem authentication, use the cable shared-secret cable interface configuration command. Use the no form of this command to disable cable modem authentication.
cable shared-secret secret-key
secret-key | Text string used as secret key. Text string can be from 1 to |
To activate cable modem upstream verification, use the cable source-verify cable interface configuration command. Use the no form of this command to disable the display of this information.
cable source-verifyTo create a spectrum group, use the cable spectrum-group global configuration command. Use the no form of this command to disable this spectrum group.
cable spectrum-group group-number type {blind | scheduled | daily periodic-sec seconds}
group-number | Spectrum group number. Valid range is from 1 to 32. |
blind | Allows the upstream frequency and input power level to change whenever noise impairs upstream data traffic. |
scheduled | Allows the upstream frequency and power level to change at set times in a day. |
daily periodic-sec | Allows the upstream frequency level at a specified interval in seconds. |
seconds | Rate in seconds when upstream frequency and power level change. |
To configure a list of upstream frequencies and nominal power levels that each spectrum group can use when an upstream frequency change is necessary, use the cable spectrum-group frequency global configuration command. Use the no form of this command to delete a spectrum group list.
cable spectrum-group group-number [time hh:mm:ss] frequency up-freq-hz
group-number | Spectrum group number. Valid range is 1 to 32. Configuring a spectrum group with multiple entries of this type, defines a list of frequencies which are available for use as upstream frequencies. |
time hh:mm:ss | (Optional) For scheduled spectrum groups, specifies the time of day that the frequency and input power level should change. |
up-freq-hz | Upstream frequency. Valid range is 5000000 to 42000000 Hz. |
power-level-dbmv | (Optional) Nominal input power level. Valid range is -10 to +10 decibels per millivolt (dBmV). Some cable plants might want to change only the input power level and not frequency on a daily time schedule. |
To enable the upstream forward error correction (FEC), use the cable upstream fec cable interface configuration command. Use the no form of this command to disable FEC.
cable upstream port fec
port | The port number identifying the location of the installed Cisco MC11cable modem card. |
To enter a fixed frequency of the upstream RF carrier for an upstream port, use the cable upstream frequency cable interface configuration command. Use the no form of this command to restore the default value for this command.
cable upstream port frequency up-freq-hz
port | The port number identifying the location of the installed Cisco MC11 cable modem card. |
up-freq-hz | The upstream center frequency is configured to a fixed value. The valid range is 5000000 to 42000000 Hz. |
To set the input power level for the upstream RF carrier in decibels per millivolt (dBmV), use the cable upstream power-level cable interface configuration command. Use the no form of this command to restore the default configuration value for this command.
cable upstream port power-level dbmv
port | The port number identifying the location of the installed Cisco MC11. |
dbmv | Decibels per millivolt designating the upstream signal input power level. Valid range of -10 decibels per millivolt (dBmV to 10 dBmV). |
To enable the cable upstream scrambler, use the cable upstream scrambler cable interface configuration command. Use the no form of this command to restore the default configuration value for this command.
cable upstream port scrambler
port | The port number identifying the location of the installed Cisco MC11. |
To disable the upstream port, use the cable upstream shutdown cable interface configuration command. Use the no form of this command to enable the upstream port.
cable upstream port shutdown
port | The port number identifying the location of the installed Cisco MC11. |
To display the revision level information for the Cisco uBR7246 midplane, use the show c7200 privileged EXEC command.
show c7200To display the upstream data burst profiles used to configure the upstream PHY, use the show cable burst-profile privileged EXEC command.
show cable burst-profileTo view configuration settings on the Cisco uBR7246, use the show cable modem EXEC command.
show cable modem [ip-address]
ip-address | (Optional) Specify the IP address of the modem. |
To display modulation profile group information, use the show cable modulation-profile privileged EXEC command.
show cable modulation-profileTo display baseline privacy information, use the show cable privacy privileged EXEC command.
show cable privacy {tek | kek}
tek | Traffic encryption key. |
kek | Key encryption key. |
To display information about the quality of service (QoS), use the show cable qos privileged EXEC command.
show cable qosTo display spectrum group information, use the show cable spectrum group privileged EXEC command.
show cable spectrum group [group-number]
group-number | (Optional) The assigned group number of the spectrum group. |
To display information about a specific cable modem card slot's interface controllers, use the show controllers cable privileged EXEC command.
show controllers cable slot/port [downstream | upstream [channel]]
slot/port | Slot number/port number indicating the location of the Cisco MC11 cable modem card. |
downstream | (Optional) Displays downstream interface status. |
upstream | (Optional) Displays upstream interface status. |
channel | (Optional) Selects specific upstream channel. |
To display the revision level information for the cable line card, use the show diag privileged EXEC command.
show diagTo display cable interface information, use the show interface cable privileged EXEC command:
show interface cable port/slot [downstream | upstream]
port/slot | The port number/slot number indicating the location of the installed Cisco MC11 cable modem. |
downstream | (Optional) Displays cable downstream port information for a cable modem. |
upstream | (Optional) Displays cable upstream port information for a cable modem. |
To display information about the signal quality, use the show interface cable signal-quality privileged EXEC command:
show interface cable slot/port signal-quality
slot/port | Slot number/port number indicating the location of the Cisco MC11 cable modem card. |
To display information by service identifier (SID) of each cable modem on the network, use the show interfaces cable sid privileged EXEC command:
show interfaces cable slot/port sid [sid-number]
slot/port | Identifies the slot number and downstream port number. |
sid-number | (Optional) Identifies the service identification number. |
Posted: Mon Feb 8 14:22:31 PST 1999
Copyright 1989-1999©Cisco Systems Inc.