To display the logical channels within the physical upstream port,
use the
show
cable
modem command without any options:
Router# show cable modem
B D
MAC Address IP Address I/F MAC Prim RxPwr Timing Num P I
State Sid (dBmv) Offset CPE I P
0014.bfbe.4f9b 1.60.0.6 C5/0/0/U0.0 online 1 1.00 1406 0 N N
0014.bfbe.4efd 1.60.0.2 C5/0/0/U0.1 online 637 1.00 1409 0 N N
0014.bfbe.4efa 1.60.0.3 C5/0/0/U1 online 635 1.00 1409 0 N N
The following example shows a typical output of the
show controllers cable command for a cable
interface line card that is configured with multiple logical channels:
Router# show controllers cable 7/1/0 upstream 0
Cable7/1/0 Upstream 0 is up
Frequency 10.000 MHz, Channel Width 6.400 MHz, Symbol Rate 5.120 Msps
Modulations - A-short 64-QAM, A-long 64-QAM, A-ugs 64-QAM
This upstream is mapped to physical port 0
Spectrum Group is overridden
US phy MER(SNR)_estimate for good packets - 23.4731 dB
Nominal Input Power Level 3 dBmV, Tx Timing Offset 1645
Ranging Backoff Start 3, Ranging Backoff End 6
US timing offset adjustment type 0, value 0
Ranging Insertion Interval automatic (60 ms)
US throttling off
Tx Backoff Start 3, Tx Backoff End 5
Modulation Profile Group 322
Concatenation is enabled
Fragmentation is enabled
part_id=0x3140, rev_id=0x03, rev2_id=0x00
nb_agc_thr=0x0000, nb_agc_nom=0x0000
Range Load Reg Size=0x58
Request Load Reg Size=0x0E
Minislot Size in number of Timebase Ticks is = 1
Minislot Size in Symbols = 32
Bandwidth Requests = 0x31
Piggyback Requests = 0x0
Invalid BW Requests= 0x0
Minislots Requested= 0x22C
Minislots Granted = 0x31
Minislot Size in Bytes = 24
Map Advance (Dynamic) : 2465 usecs
Map Count = 17393154
Remote Map Counts: (none)
UCD Count = 17875
Remote UCD Counts: (none)
SCDMA mode enabled
PHY: us errors 0 us recoveries 0
MAC PHY TSS: tss error start 0 tss error end 0
MAC PHY Status: bcm3140 status 0 lookout status 0
MAP/UCD Replication Instructions:
To display the modulation profile of a single logical channel, for
default and legacy cable interface line cards, use the
show
cable
modulation command:
Router# show cable modulation cable 5/0/0 upstream 0
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
381 request qpsk 64 no 0x0 0x10 0x152 0 0 no yes 400 qpsk0 n
381 initial qpsk 384 no 0x5 0x22 0x152 0 0 no yes 6 qpsk0 n
381 station qpsk 384 no 0x5 0x22 0x152 0 0 no yes 6 qpsk0 n
381 short qpsk 64 no 0x3 0x4C 0x152 12 0 yes yes 400 qpsk0 n
381 long qpsk 64 no 0x9 0xE8 0x152 136 0 yes yes 400 qpsk0 n
381 a-short 64qam 64 no 0x6 0x4C 0x152 6 0 yes yes 400 qpsk1 n
381 a-long 64qam 64 no 0x9 0xE8 0x152 46 0 yes yes 400 qpsk1 n
381 a-ugs 64qam 64 no 0x9 0xE8 0x152 35 0 yes yes 400 qpsk1 n
The following example shows a typical output of the show
interface cable command when multiple logical channels are
configured on the indicated cable interface:
Router# show interface cable 7/1/0 mac-scheduler 0
DOCSIS 1.1 MAC scheduler for Cable7/1/0/U0: rate 26880000
wfq:None
Queue[Rng Polls] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 1
Queue[CIR Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(7) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(6) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(5) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(4) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(3) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(2) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(1) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(0) Grants] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 1
Req Slots 17301958, Req/Data Slots 1440804
Init Mtn Slots 498660, Stn Mtn Slots 28134
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 26, Adv Phy Long Grant Slots 23
Adv Phy UGS Grant Slots 0
Awacs Slots 0
Fragmentation count 0
Fragmentation test disabled
Avg upstream channel utilization : 0%
Avg percent contention slots : 97%
Avg percent initial ranging slots : 3%
Avg percent minislots lost on late MAPs : 0%
Sched Table Rsv-state: Grants 0, Reqpolls 0
Sched Table Adm-State: Grants 0, Reqpolls 0, Util 0%
UGS : 0 SIDs, Reservation-level in bps 0
UGS-AD : 0 SIDs, Reservation-level in bps 0
RTPS : 0 SIDs, Reservation-level in bps 0
NRTPS : 0 SIDs, Reservation-level in bps 0
BE : 3 SIDs, Reservation-level in bps 0
MAP TSS: lch_state 11, init_retries 0
late_initial_maps 0, late_ucd_maps 0
mac-phy tss errors 0
Router#