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Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 3 Cisco CMTS Show Commands
show cable modulation-profile
221 short qpsk 72 no 0x5 0x4B 0x152 6 8 yes yes 176 qpsk0 na
221 long qpsk 80 no 0x8 0xDC 0x152 0 8 yes yes 168 qpsk0 na
221 a-short 64qam 128 no 0x5 0x63 0x152 10 20 yes yes 192 qpsk0 no
221 a-long 64qam 128 no 0xF 0xC8 0x152 0 20 yes yes 192 qpsk0 no
Router#
show cable modulation-profile 241
Mod IUC Type Pre Diff FEC FEC Scrmb Max Guard Last Scrmb Pre Pre RS
len enco T k seed B time CW offst Type
BYTE BYTE siz size short
241 request qpsk 68 no 0x0 0x10 0x152 0 8 no yes 0 qpsk0 no
241 initial qpsk 2 no 0x0 0x10 0x0 0 0 no no 0 qpsk1 no
241 station qpsk 128 no 0x5 0x22 0x152 0 48 no yes 0 qpsk0 no
241 a-short 32qam 160 no 0x9 0x4C 0x152 6 8 yes yes 0 qpsk1 no
241 a-long 64qam 132 no 0xC 0xE7 0x152 0 8 yes yes 0 qpsk1 no
241 a-ugs 16qam 80 no 0x3 0xE7 0x152 0 8 yes yes 0 qpsk1 no
Router#
The following shows sample output for the
upstream
option, which displays the modulation profile
currently being used by a particular upstream:
Router#
show cable modulation-profile cable 4/1 upstream 1
Mod IUC Type Pre Diff FEC FEC Scrmb Max Guard Last Scrmb Pre Pre RS
len enco T k seed B time CW offst Type
BYTE BYTE siz size short
41 request qpsk 64 no 0x0 0x10 0x152 0 8 no yes 396 qpsk na
41 initial qpsk 128 no 0x5 0x22 0x152 0 48 no yes 6 qpsk na
41 station qpsk 128 no 0x5 0x22 0x152 0 48 no yes 6 qpsk na
41 short qpsk 88 no 0x5 0x4C 0x152 35 42 yes yes 396 qpsk na
41 long qpsk 76 no 0x6 0xE8 0x152 135 143 yes yes 396 qpsk na
Router#
The following example shows typical detailed output for an individual modulation profile that is
displayed when using the
verbose
option. Each IUC is described in detail.
Router#
show cable modulation-profile 1 verbose
Modulation Profile Number: 1
Burst: tdma
IUC: request (IUC 1)
Modulation: qpsk
Preamble length: 64
Differential Encoding: off
FEC parity T bytes: 0x0
FEC codeword length K bytes: 0x10
Scrambler seed: 0x152
Max short burst size B bytes: 0
Guard time size in symbols: 8
Shortened last codeword: no
Scrambler: enabled
Preamble offset: 184
Preamble type: qpsk0
RS interleaver on: na
RS interleaver depth: 0
RS interleaver block size: 0
Modulation Profile Number: 1
Burst: tdma
IUC: initial maintenance (IUC 3)
Modulation: qpsk
Preamble length: 128
Содержание Broadband Cable
Страница 760: ...3 264 Cisco Broadband Cable Command Reference Guide OL 1581 08 Chapter 3 Cisco CMTS Show Commands show version ...
Страница 1216: ...6 214 Cisco Broadband Cable Command Reference Guide OL 1581 07 Chapter 6 Cable CPE Commands debug usb ...
Страница 1266: ...A 50 Cisco Broadband Cable Command Reference Guide OL 1581 07 Appendix A Using the ROM Monitor unset ...