Examples
This example
shows theoutput of the
show
interface
cable
mac-scheduler
command for the upstream port 0 on the indicated cable
interface:
Router# show interface cable 3/0 mac-scheduler 0
DOCSIS 1.1 MAC scheduler for Cable3/0/U0
Queue[Rng Polls] 0/64, 0 drops
Queue[CIR Grants] 0/64, 0 drops
Queue[BE(7) Grants] 0/64, 0 drops
Queue[BE(6) Grants] 0/64, 0 drops
Queue[BE(5) Grants] 0/64, 0 drops
Queue[BE(4) Grants] 0/64, 0 drops
Queue[BE(3) Grants] 0/64, 2 drops
Queue[BE(2) Grants] 0/64, 0 drops
Queue[BE(1) Grants] 0/64, 0 drops
Queue[BE(0) Grants] 0/64, 0 drops
Req Slots 21992195, Req/Data Slots 0
Init Mtn Slots 313764, Stn Mtn Slots 37638
Short Grant Slots 3739132, Long Grant Slots 512
Fragmentation count 5
Fragmentation test disabled
Avg upstream channel utilization : 2%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 0%
Avg percent contention slots : 96%
Avg percent initial ranging slots : 1%
Avg percent minislots lost on late MAPs : 0%
Sched Table Adm-State: Grants 1, Reqpolls 0, Util 2%
UGS : 1 SIDs, Reservation-level in bps 80000
UGS-AD : 0 SIDs, Reservation-level in bps 0
RTPS : 0 SIDs, Reservation-level in bps 0
NRTPS : Not Supported
BE : 4 SIDs, Reservation-level in bps 0
Example of the show interface cable
mac-scheduler
Command Output When Multiple Logical Channels are Configured for the Cisco uBR10012 Routers
OFDMA upstreams is calculated based on maximum single modem upstream performance. Actual performance can vary depending upon
cable modem capabilities, possible congestion in the network, and other conditions.
This example shows the output of the show
interface
cable
mac-scheduler
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 2560000
wfq:None Fairness: Off
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] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(6) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(5) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(4) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(3) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(2) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(1) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(0) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Req Slots 10348117, Req/Data Slots 10072546
Init Mtn Slots 298967, Stn Mtn Slots 21926
Short Grant Slots 24, Long Grant Slots 16
Adv Phy Short Grant Slots 0, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Awacs Slots 0
Fragmentation count 0
Fragmentation test disabled
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 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 : 4 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
DOCSIS 1.1 MAC scheduler for Cable7/1/0/U8: rate 2560000
wfq:None Fairness: Off
Queue[Rng Polls] 0/128, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[CIR Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(7) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(6) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(5) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(4) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(3) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(2) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(1) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Queue[BE(0) Grants] 0/256, 0 drops, flows 0 fs_demand_ms 0, max 0
Req Slots 0, Req/Data Slots 0
Init Mtn Slots 0, Stn Mtn Slots 0
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 0, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Awacs Slots 0
Fragmentation count 0
Fragmentation test disabled
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 0%
Avg percent contention slots : 0%
Avg percent initial ranging slots : 0%
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 : 0 SIDs, Reservation-level in bps 0
MAP TSS: lch_state 1, init_retries 0
late_initial_maps 0, late_ucd_maps 0
mac-phy tss errors 0
Example of the show interface cable
mac-scheduler
Command Output That Displays WFQ Parameters in the Cisco uBR10012 Router
This example
shows theoutput of the
show
interface
cable
mac-scheduler
command
that
displays
WFQ parameters configured for upstream service flows in slot 5,
subslot 0, and port 1 on a Cisco uBR10012 router:
Router# show interface cable 5/0/2 mac-scheduler 0
DOCSIS 1.1 MAC scheduler for Cable5/0/2/U0: rate 10240000
wfq:Class, weights: 1 2 3 4 5 6 7 8
Queue[Rng Polls] 0/128, 0 drops, flows 0 max 0
Queue[CIR Grants] 0/256, 0 drops, flows 0 max 0
Queue[BE(7) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(6) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(5) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(4) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(3) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(2) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(1) Grants] 0/32, 0 drops, flows 0 max 0
Queue[BE(0) Grants] 0/32, 0 drops, flows 0 max 0
Queue[LLQ Grants] 0/64, 0 drops, flows 0 max 0
BG pending grant list entries: 0
BG delay list entries: 0
Req Slots 265389868, Req/Data Slots 4
Init Mtn Slots 3798558, Stn Mtn Slots 0
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 0, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Awacs Slots 0
Fragmentation count 0
Fragmentation test disabled
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 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 : 0 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
r4k ticks in 1ms 800000
Total scheduling events 0
No search was needed 0
Previous entry free 0
Next entry free 0
Could not schedule 0
Recovery failed 0
Curr time 251 entry 251
Example of the show interface cable
mac-scheduler
Command Output That Displays Upstream Scheduler Information for a MAC Domain Configured with D-PON
This example
shows theoutput of the
show
interface
cable
mac-scheduler
command that displays upstream scheduler related information
for a MAC domain configured with D-PON:
Router# show interface cable 7/0/2 mac-scheduler 1
DOCSIS 1.1 MAC scheduler for Cable7/0/2/U1: rate 15360000
wfq:None
Req Slots 124, Req/Data Slots 13
Init Mtn Slots 2243, Stn Mtn Slots 5
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 1, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Awacs Slots 0
Fragmentation count 0
Fragmentation test disabled
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 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 : 0 SIDs, Reservation-level in bps 0
MAP TSS: lch_state 13, init_retries 0
late_initial_maps 0, late_ucd_maps 0
mac-phy tss errors 0
! Only the DPON reference channel will display the following
Queue[Rng Polls] 0/128, 0 drops, flows 0 max 3
Queue[CIR Grants] 0/256, 0 drops, flows 0 max 1
Queue[BE(7) Grants] 0/64, 0 drops, flows 0 max 0
Queue[BE(6) Grants] 0/64, 0 drops, flows 0 max 0
Queue[BE(5) Grants] 0/64, 0 drops, flows 0 max 0
Queue[BE(4) Grants] 0/64, 0 drops, flows 0 max 0
Queue[BE(3) Grants] 0/64, 0 drops, flows 0 max 0
Queue[BE(2) Grants] 0/64, 0 drops, flows 0 max 2
Queue[BE(1) Grants] 0/64, 0 drops, flows 0 max 0
Queue[BE(0) Grants] 0/64, 0 drops, flows 0 max 1
BG pending grant list entries: 0
BG delay list entries: 0
This example shows the output for the
show
interface
cable
mac-scheduler
command:
Router#show interface c3/0/0 mac-scheduler
DOCSIS 1.1 MAC scheduler for Cable3/0/0/U0 : rate 30720000
wfq:None
us_balance:OFF
fairness:OFF
Queue[Rng Polls] flows 0
Queue[CIR Grants] flows 0
Queue[BE(07) Grants] flows 0
Queue[BE(06) Grants] flows 0
Queue[BE(05) Grants] flows 0
Queue[BE(04) Grants] flows 0
Queue[BE(03) Grants] flows 0
Queue[BE(02) Grants] flows 0
Queue[BE(01) Grants] flows 0
Queue[BE(00) Grants] flows 0
Req Slots 985995867, Req/Data Slots 1543519
Init Mtn Slots 14621488, Stn Mtn Slots 40946
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 1732, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 0%
Avg percent contention slots : 98%
Avg percent initial ranging slots : 1%
Avg percent minislots lost on late MAPs : 0%
MAP TSS: lch_state 9, init_retries 0
late_initial_maps 0, late_ucd_maps 0
mac-phy tss errors 0, missed ccc 0
DOCSIS 1.1 MAC scheduler for Cable3/0/0/U1 : rate 30720000
wfq:None
us_balance:OFF
fairness:OFF
Queue[Rng Polls] flows 0
Queue[CIR Grants] flows 0
Queue[BE(07) Grants] flows 0
Queue[BE(06) Grants] flows 0
Queue[BE(05) Grants] flows 0
Queue[BE(04) Grants] flows 0
Queue[BE(03) Grants] flows 0
Queue[BE(02) Grants] flows 0
Queue[BE(01) Grants] flows 0
Queue[BE(00) Grants] flows 0
Req Slots 985976158, Req/Data Slots 1548452
Init Mtn Slots 14621526, Stn Mtn Slots 45933
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 11243, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 0%
Avg percent contention slots : 98%
Avg percent initial ranging slots : 1%
Avg percent minislots lost on late MAPs : 0%
MAP TSS: lch_state 9, init_retries 0
late_initial_maps 0, late_ucd_maps 0
mac-phy tss errors 0, missed ccc 0
Router#
This example shows the output for the
show
interface
cable
mac-scheduler
command for specific upstream port:
Router#show interface c3/0/0 mac-scheduler 0
DOCSIS 1.1 MAC scheduler for Cable3/0/0/U0 : rate 30720000
wfq:None
us_balance:OFF
fairness:OFF
Queue[Rng Polls] flows 0
Queue[CIR Grants] flows 0
Queue[BE(07) Grants] flows 0
Queue[BE(06) Grants] flows 0
Queue[BE(05) Grants] flows 0
Queue[BE(04) Grants] flows 0
Queue[BE(03) Grants] flows 0
Queue[BE(02) Grants] flows 0
Queue[BE(01) Grants] flows 0
Queue[BE(00) Grants] flows 0
Req Slots 1358971798, Req/Data Slots 2127346
Init Mtn Slots 20155580, Stn Mtn Slots 56513
Short Grant Slots 0, Long Grant Slots 0
Adv Phy Short Grant Slots 2331, Adv Phy Long Grant Slots 0
Adv Phy UGS Grant Slots 0
Avg upstream channel utilization : 0%
Avg upstream channel utilization in 60 sec(SNMP, excl dps): 0%
Avg percent contention slots : 98%
Avg percent initial ranging slots : 1%
Avg percent minislots lost on late MAPs : 0%
MAP TSS: lch_state 9, init_retries 0
late_initial_maps 0, late_ucd_maps 0
mac-phy tss errors 0, missed ccc 0
Router#
This example shows the output for the
show
interface
cable
mac-scheduler
command with
map-stats
keyword:
Router#show interface c3/0/0 mac-scheduler 0 map-stats
UBR MAP Proxy U0 for Cable3/0/0/U0:
mslots_per_frame: 1 frame_in_nsecs: 50000
Bktwidth:(2000 usecs, 20480 tstamps, 40 mslots) numbkts:150
Tblwidth:(300000 usecs, 3072000 tstamps, 6000 mslots)
Vacant bkt interval: 1200 mslots
Bucket vacancy table (slot_count, used_ms, vacancy_ms)
( 1, 0, 0) ( 0, 4, 36) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 1, 0, 0) ( 0, 4, 36) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 1, 0, 0) ( 0, 4, 36) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 1, 0, 0) ( 0, 4, 36) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 1, 0, 0) ( 0, 4, 36) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39) ( 0, 1, 39)
ReqSlotSz:1 ReqSlotChunkSz:4 ImSlotSz:38 SmSlotsz:2
MinFragSz:0 AdvMinFragSz:2 MaxUnFragSz:10 TolUfragJitt:0
Current UCD count: 3
UnfragSlotJittLimit: 0 usecs, CACEnf:0
Force fragmentation: Threshold 2000
fwd_tbl_sz:0 adv_fwd_tbl_sz:1630
UBR MAP Builder pch 12, lch 0 status 1
MAP Calndr Variables: Numbkts:150
Bktwidth:(2000 usecs, 20480 tstamps, 40 mslots)
Tblwidth:(300000 usecs, 3072000 tstamps, 6000 mslots)
Vacant bkt interval: 1200 mslots
Bucket table (map_bkt_idx, total_rsvd_ms)
(0 ,0 ) (1 ,0 ) (2 ,0 ) (3 ,0 ) (4 ,0 )
(5 ,0 ) (6 ,0 ) (7 ,0 ) (8 ,0 ) (9 ,0 )
(10 ,0 ) (11 ,0 ) (12 ,0 ) (13 ,0 ) (14 ,0 )
(15 ,0 ) (16 ,0 ) (17 ,0 ) (18 ,0 ) (19 ,0 )
(20 ,0 ) (21 ,0 ) (22 ,0 ) (23 ,0 ) (24 ,0 )
(25 ,0 ) (26 ,0 ) (27 ,0 ) (28 ,0 ) (29 ,0 )
(30 ,0 ) (31 ,0 ) (32 ,0 ) (33 ,0 ) (34 ,0 )
(35 ,0 ) (36 ,0 ) (37 ,0 ) (38 ,0 ) (39 ,0 )
(40 ,0 ) (41 ,0 ) (42 ,0 ) (43 ,0 ) (44 ,0 )
(45 ,0 ) (46 ,0 ) (47 ,0 ) (48 ,0 ) (49 ,0 )
(50 ,0 ) (51 ,0 ) (52 ,0 ) (53 ,0 ) (54 ,0 )
(55 ,0 ) (56 ,0 ) (57 ,0 ) (58 ,0 ) (59 ,0 )
(60 ,0 ) (61 ,0 ) (62 ,0 ) (63 ,0 ) (64 ,0 )
(65 ,0 ) (66 ,0 ) (67 ,0 ) (68 ,0 ) (69 ,0 )
(70 ,0 ) (71 ,0 ) (72 ,0 ) (73 ,0 ) (74 ,0 )
(75 ,0 ) (76 ,0 ) (77 ,0 ) (78 ,0 ) (79 ,0 )
(80 ,0 ) (81 ,0 ) (82 ,0 ) (83 ,0 ) (84 ,0 )
(85 ,0 ) (86 ,0 ) (87 ,0 ) (88 ,0 ) (89 ,0 )
(90 ,0 ) (91 ,0 ) (92 ,0 ) (93 ,0 ) (94 ,0 )
(95 ,0 ) (96 ,0 ) (97 ,0 ) (98 ,0 ) (99 ,0 )
(100,0 ) (101,0 ) (102,0 ) (103,0 ) (104,0 )
(105,0 ) (106,0 ) (107,0 ) (108,0 ) (109,0 )
(110,0 ) (111,0 ) (112,0 ) (113,0 ) (114,0 )
(115,0 ) (116,0 ) (117,0 ) (118,0 ) (119,0 )
(120,0 ) (121,0 ) (122,0 ) (123,0 ) (124,0 )
(125,0 ) (126,0 ) (127,0 ) (128,0 ) (129,0 )
(130,0 ) (131,0 ) (132,0 ) (133,0 ) (134,0 )
(135,0 ) (136,0 ) (137,0 ) (138,0 ) (139,0 )
(140,0 ) (141,0 ) (142,0 ) (143,0 ) (144,0 )
(145,0 ) (146,0 ) (147,0 ) (148,0 ) (149,0 )
ReqSlotSz:1 ReqSlotChunkSz:4 ImSlotSz:38 SmSlotsz:2
MinFragMSlots:33 AdvMinFragMSlots: 2
MaxUnFragSz:33 MaxUnFragSzNoJumbo:33, TolUfragJitt:0
Current UCD count: 4
UnfragSlotJittLimit: 0 usecs, CACEnf:1
Force fragmentation: Threshold 2000
MAP BD Varaibles
last_sid 16383, last_iuc 1, next_ie_offset 0
nonzero_len 0, zero_len 0
map_cycle_usecs 2000, map_size_mslots 40
sm_mslot_nopad 4, sm_mslot_pad 4 giant_map_check_mslot 80
nom_map_adv_usecs 2757, max_map_adv_usecs 3880
fwd_tbl_sz:0 adv_fwd_tbl_sz:1630
Router#
Table 20. show
interface cable mac-scheduler Field Descriptions
Field
|
Description
|
wfq
|
WFQ
parameters: class, activity, and custom weights for service flow priorities.
|
Queue...
|
State
of the first-in, first-out (FIFO) priority queues for each scheduler. For each
queue, the command displays the following:
- Name of the queue. The
following queues are available:
- Rng Polls—Queue used for
ranging requests.
- CIR Grants—Queue used
for committed information rate (CIR) grants, which is used for Unsolicited
Grant Service (UGS) and UGS with Activity Detection (UGS-AD) service flows.
- BE(x) Grants—One of the
eight queues used for Best-Effort(BE) service flows.
- Number of currently
occupied slots over the total number of slots available (which is hardcoded to
64 for each queue). For example, 3/64 indicates that the queue has a depth of
64 slots available and that 3 are currently in use.
- Number of packets
dropped because the queue already had 64 requests pending and a free slot was
therefore not available.
|
Req
Slots
|
Counter
showing the number of slots advertised on this upstream port for bandwidth
request opportunities since the last reset of the router or the counter.
|
Req/Data
|
Counter
showing the number of slots advertised on this upstream port for request and
data transmission opportunities since the last reset of the router or the
counter.
|
Init
Mtn Slots
|
Number
of slots granted on this upstream port for initial maintenance requests
(initial ranging) since the last reset of the router or the counter.
|
Stn Mtn
Slots
|
Number
of slots granted on this upstream port for station maintenance requests
(unicast ranging) since the last reset of the router or the counter.
|
Short
Grant Slots
|
Number
of slots granted on this upstream port for short data requests since the last
reset of the router or the counter.
|
Long
Grant Slots
|
Number
of slots granted on this upstream port for long data requests since the last
reset of the router or the counter.
|
Adv Phy
Short Grant Slots
|
Number
of slots granted on this upstream port for short advanced physical data
requests.
|
Adv Phy
Long Grant Slots
|
Number
of slots granted on this upstream port for long advanced physical data
requests.
|
Adv Phy
UGS Grant Slots
|
Number
of UGS slots granted on this upstream port.
|
Awacs
Slots
|
Number
of awacs slots granted on this upstream port.
|
Fragmentation count
|
Number
of frames received on this upstream port fragmented according to the DOCSIS 1.1
fragmentation technique.
|
Fragmentation test
|
Fragmentation statistics. If fragmentation is disabled, no statistics are
available. If fragmentation is enabled, the fragmentation mode is displayed
(multiple grant mode or piggyback mode), and the display shows the
fragmentation threshold in the number of bytes and minislots.
|
Avg
upstream channel utilization
|
Total
upstream bandwidth currently used for upstream data traffic and DOCSIS
management traffic, expressed as a short-term average percentage of total
minislots used.
Note
|
See
table below for the theoretical maximum possible bandwidth for an upstream,
based on the channel width and modulation scheme.
|
|
Avg
percent contention slots
|
Approximate average unused capacity in the network. This field shows the total
upstream bandwidth that is currently dedicated to providing bandwidth request
opportunities, expressed as an average percentage of total minislots used. This
value is calculated by dividing the number of scheduled contention slots by the
total number of minislots.
Note
|
This
value is approximately 100 percent minus the percentage of slots being used for
upstream data, management traffic, and initial ranging slots.
|
|
Avg
percent initial ranging slots
|
Total
upstream bandwidth currently used on an average for initial ranging requests
for cable modems coming online, expressed as an average percentage of total
minislots used.
|
Avg
percent minislots lost on late MAPs
|
Total
upstream bandwidth currently lost and unused because the bandwidth allocation
MAP message was sent late. This field shows how often allocation gaps occur in
the MAP scheduler, where the Cisco CMTS allows significant amounts of time to
pass before it schedules a new MAP.
Ideally, the CMTS should schedule MAPs consecutively, so that no gaps occur
between the MAPs. However, when a large number of cable modems are using
different service flow schedules, gaps can appear in the MAP scheduler,
resulting in wasted scheduling time.
Tip
|
A
typical value is only a few percentage points. If this field shows larger
values than this, use the
debug
cable
startalloc command to display the number of
minislots that are skipped every time the Cisco CMTS has to adjust its MAP
scheduler timer.
|
|
Sched
Table Rsv-State
|
Current
status of reserved service flows (which typically indicates the number of voice
grants):
- Grants—Number of
admitted UGS style upstream service flows.
- Reqpolls—Number of
admitted Real Time Polling Service (RTPS) style upstream service flows.
|
Sched
Table Adm-State
|
Current
status of admitted service flows (which typically indicates the number of voice
grants):
- Grants—Number of
admitted UGS style upstream service flows.
- Reqpolls—Number of
admitted RTPS style upstream service flows.
- Percentage of channel
utilization that is associated with these service flows.
|
UGS
|
Number
of service IDs (SIDs) used for UGS service flows, and the current bandwidth
reserved by these SIDs, in bits per second.
|
UGS-AD
|
Number
of SIDs used for UGS with Activity Detection (UGS-AD) service flows, and the
current bandwidth reserved by these SIDs, in bits per second.
|
RTPS
|
Number
of SIDs used for RTPS service flows, and the current bandwidth reserved by
these SIDs, in bits per second.
|
NRTPS
|
Number
of SIDs used for non-RTPS (NRTPS) service flows, and the current bandwidth
reserved by these SIDs, in bits per second.
|
BE
|
Number
of SIDs used for best-effort (BE) service flows, and the current bandwidth
reserved by these SIDs, in bits per second.
|
MAP TSS
|
MAP
timestamp snapshot.
|
Note
|
The sum of
Avg upstream
channel utilization and
Avg percent
contention slots need not be 100 percentage when rate-adapt is configured.
These parameters may be in single digit when the remaining contention slots are
assigned to other users and are not using any bandwidth.
|
The table below
shows the maximum usable bandwidth (total bandwidth minus header and MAC-layer
overhead) for an upstream that is using a specific channel width and modulation
scheme combination.
Table 21. Maximum
Potential Upstream Bandwidth
Channel
Width (MHz)
|
Modulation Scheme
|
Raw
Speed (Mbps)
|
Usable
Bandwidth (Mbps)
|
1.6
|
QPSK
|
2.56
|
2.2
|
1.6
|
16 QAM
|
5.12
|
4.4
|
3.2
|
16 QAM
|
10.24
|
8.9
|
3.2
|
64 QAM
|
15.36
|
13.5
|
6.4
|
16 QAM
|
20.48
|
18
|
6.4
|
64 QAM
|
30.72
|
27.2
|
For example, if
the upstream is configured for a 3.2 MHz channel width and is using 16 QAM
modulation, its maximum usable bandwidth is 8.9 Mbps. If the average channel
utilization field shows that the upstream is at 50 percent, it indicates that
cable modems on that upstream are currently using 0.5 * 8.9 Mbps or 4.45 Mbps.
Tip
|
In Cisco IOS
Release 12.1(12)EC, Cisco IOS Release 12.2(8)BC1, and later releases, you can
add a timestamp to
show
commands using the
exec
prompt
timestamp command in the line configuration mode.
|