The set of commands provided in Table 10-3 is the bare minimum for turning up a 2Dx12U CAM in a given slot. You are not required to use the same values for these commands. The values chosen are meant as a useful example.
10
Basic CAM ConfigurationTable 10-3: Example of Basic Command Sequence for Turning up a 2Dx12U in Slot 8
Command Purpose
Configure the Slot
configure slot 8 type 2D12U Provision slot 8 as a 2Dx12U slot. Configure the Downstream Frequencies
configure interface cable 8/0 cable downstream frequency 321000000
Set downstream frequency to 321 MHz for slot 8 mac domain 0 (downstream 0).
configure interface cable 8/1 cable downstream frequency 333000000
Set downstream frequency to 333 MHz for slot 8 mac domain 1 (downstream 1).
Configure the Upstream Frequencies and Connectors
configure interface cable 8/0 cable upstream 0 connector 0 Assign upstream channel 0 of CAM 8, mac domain 0, to connector 0. configure interface cable 8/0 cable upstream 0 frequency
12000000
Configure upstream channel 0 of CAM 8, mac domain 0, to use frequency 12 MHz.
configure interface cable 8/1 cable upstream 6 connector 6 Assign upstream channel 6 of CAM 8, mac domain 1, to connector 6. configure interface cable 8/1 cable upstream 6 frequency
12000000
Configure upstream channel 6 of CAM 8, mac domain 1, to use frequency 12 MHz.
Assign IP and Helper Addresses to CAM configure interface cable 8/0 ip address 10.21.2.1
255.255.255.128 Configure primary IP address for CAM 8.
configure interface cable 8/0 ip address 10.21.2.129
255.255.255.128 secondary Configure secondary IP address for CAM 8. configure interface cable 8/0 cable helper-address
10.50.102.3 Configure the CAM helper address for CAM 8.
Set up the Cable Bundle
configure interface cable 8/0 cable bundle master Designate slot 8, port 0, as cable bundle master. configure interface cable 8/1 cable bundle 8/0 Add mac-domain 8/1 to cable bundle 8/0.
Put CAM in Service
configure interface cable 8/0 cable downstream no shutdown Restore port 8/0 to service. configure interface cable 8/1 cable downstream no shutdown Restore port 8/1 to service.
configure interface cable 8/0 no shutdown mac-port Restore mac domain 8/0 (that is, slot 8, downstream 0) to service. configure interface cable 8/1 no shutdown mac-port Restore mac domain 8/1 to service.
configure interface cable 8/0 cable upstream 0 no shutdown Restore upstream channel 0 of CAM 8, mac domain 0, to service. configure interface cable 8/1 cable upstream 6 no shutdown Restore upstream channel 6 of CAM 8, mac domain 1, to service. configure interface cable 8 no shutdown Restore module in slot 8 to service.
show interface cable 8
DS Oper Annex Freq(Hz) Mod Power Clone Spare State Type (.1dBmV) Enable Group 8/0 IS B(US) 321000000 q64 500 true - 8/1 IS B(US) 333000000 q64 500 true - US Conn Oper Chan Freq(Hz) Channel Mini Mod Power Cable State Type Width Slot Prof (dBmV) Group 8/0/U0 0 IS tdma 12000000 3200000 4 2 0 -
Table 10-4 shows the commands to restore default values for a number of upstream and downstream parameters. These are the settings which most users will choose for basic configuration. In each command the default values can be replaced as needed.
Procedure 10-2 Example of Growing and Enabling a 2Dx12U CAM with Logical
Channels
By default all 2Dx12U upstreams are set to modulation profile 2 (TDMA, QPSK).
Table 10-4: Accepting Default Parameters for Cable Downstream and Upstream Channels
Command Purpose
configure interface cable <slot/mac domain> cable downstream annex B
Accept default annex for downstream and associated upstreams. Default = DOCSIS (North American) frequency ranges.
configure interface cable <slot/mac domain> cable
downstream modulation 64qam Accept default downstream modulation type. configure interface cable <slot/mac domain> cable
downstream power-level 500
Accept default downstream power level. Default = 500, in tenths of dBmV. Range = 500-610.
configure interface cable <slot/mac domain> cable upstream
0 modulation-profile 2 Accept default modulation profile. Default = 2. configure interface cable <slot/mac domain> cable upstream
0 channel-type tdma Accept default upstream channel type. Default = tdma. configure interface cable <slot/mac domain> cable upstream
0 channel-width 3200000 Accept default channel width. Default = 3.2 MHz. configure interface cable <slot/mac domain> cable upstream
0 power-level 0
Accept default upstream power level. Default = 0. Power range varies with channel width selection. Range = -4 to 26 dBmV if channel width is 3.2 MHz.
10
Basic CAM ConfigurationNOTE
Those users who do not wish to implement logical channels can use this procedure but should ignore all steps that add or provision upstream n.1.
1 Choose the upstream frequency range that corresponds to North America,
Japan, or Europe:
configure cable freq-range <european | japanese | north-american> | no
Where: no = no frequency range override
In other words, this command is disabled and the upstream frequency range is determined by the Annex setting. See configure interface cable <slot> cable downstream annex. Annex B (North America) is the default.
2 (optional) Use the following command to display help text regarding
preconfigured modulation profiles:
configure cable modulation-profile 100 ?
Where: 100 is an arbitrary mod profile ID number Sample system response:
C4-8# configure cable modulation-profile 100 ?
atdma - Use preconfigured ATDMA modulation profile iuc - IUC type
scdma - Use preconfigured SCDMA modulation profile
tdma - Use preconfigured 2D12U CAM TDMA modulation profile tdma-1d8u - Use preconfigured 1D8U CAM TDMA modulation profile tdma-atdma - Use preconfigured TDMA-ATDMA modulation profile
You may use these ready-made modulation profiles or use them as the starting points for creating your own customized profiles.
3 Configure a desired modulation profile ID number, channel type, and
modulation:
configure cable modulation-profile 37 scdma qam-64 4 Configure a second modulation profile ID number, channel type, and
modulation:
configure cable modulation-profile 6 tdma qam-16 5 Provision slot (15 is used in this example) for a 2D CAM:
6 Assign a downstream frequency to MAC domain 0 in that slot: configure interface cable 15/0 cable downstream frequency 357000000
7 Assign a downstream frequency to MAC domain 1:
configure interface cable 15/1 cable downstream frequency 369000000
The two commands that follow can be entered as one single command as in step 8.
configure interface cable 15/0 cable upstream 0 configure interface cable 15/0 cable upstream 0 connector 0
8 Assign an upstream to MAC 0 and to a physical connector: configure interface cable 15/0 cable upstream 0 connector 0
9 Assign an upstream to MAC 1 and to a physical connector: configure interface cable 15/1 cable upstream 6 connector 6
10 Set the upstream frequency for 15/0 upstream 0:
configure interface cable 15/0 cable upstream 0 frequency 8400000
11 Set the upstream frequency for 15/1 upstream 6:
configure interface cable 15/1 cable upstream 6 frequency 14800000
Perform step 12 only to set channel-type and mod-type to values other than the defaults. Step 12 assigns modulation profile 6 to the .0 logical channels and profile 37 to the .1 logical channels.
12 Assign modulation profiles to the logical channels of the of the two
upstreams you provisioned:
configure interface cable 15/0 cable upstream 0.0 modulation-profile 6
configure interface cable 15/0 cable upstream 0.1 modulation-profile 37
configure interface cable 15/1 cable upstream 6.0 modulation-profile 6
10
Basic CAM Configuration13 Enable upstream logical channel 0 on 15/0:
configure interface cable 15/0 cable upstream 0.0 no shutdown
14 Enable logical upstream channel 1 on 15/0:
configure interface cable 15/0 cable upstream 0.1 no shutdown
15 Enable logical upstream channel 6.0 on 15/1:
configure interface cable 15/1 cable upstream 6 no shutdown
16 Enable logical upstream channel 6.1 on 15/0:
configure interface cable 15/0 cable upstream 6.1 no shutdown
17 Enable the downstream in 15/0:
configure interface cable 15/0 cable downstream no shutdown
18 Enable the mac-port in 15/0:
configure interface cable 15/0 no shutdown mac-port 19 Enable the downstream in 15/1:
configure interface cable 15/1 cable downstream no shutdown
20 Enable the mac-port in 15/1:
configure interface cable 15/1 no shutdown mac-port NOTE
If you have not configured IP addresses for the CAM, modems will range but not register.
21 If not done already, assign IP address and mask to 15/0:
configure interface cable 15/0.0 ip address 10.134.64.1 255.255.224.0
22 If not done already, assign IP helper address to 15/0:
configure interface cable 15/0.0 cable helper-address 10.50.34.3
23 Assign IP address and mask and helper address to 15/1 as in steps 21 and
24 Enable the CAM in slot 15:
configure interface cable 15/0 cable downstream no shutdown
25 Verify that the slots are provisioned as desired: show linecard status
End of procedure
The following output text provides an example of the system response to the show linecard status command:
2Dx12U Ingress Noise
Cancellation The following CLI command is used to enable ingress cancellation:
configure interface cable <x>/<y> cable upstream <z> ingress-cancellation [ interval <unsigned int> ] [ size <unsigned int> ]
For more information, see 2Dx12U Ingress Noise Cancellation, page 6-49.