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Este documento descreve como configurar, verificar e solucionar problemas de Qualidade de Serviço (QoS - Quality of Service) nas portas do host Cisco Catalyst 6800ia. A QoS é suportada em portas de host 6800ia no Cisco IOS® Software Release 152.1.SY e posterior em um Sistema de Comutação Virtual (VSS - Virtual Switching System) pai do Catalyst 6800.
Não existem requisitos específicos para este documento.
As informações neste documento são baseadas nestas versões de software e hardware:
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
O modo de configuração em um Catalyst 6800ia é desabilitado e todas as configurações de QoS para portas de host 6800ia devem ser feitas do pai. A QoS para a porta do host 6800ia é configurada com um mapa de política. Quando aplicado às interfaces, esse mapa de política envia a configuração relevante internamente para o 6800ia e, em seguida, programa as filas de hardware.
As portas de host 6800ia têm arquitetura 1p3q3t na direção de transmissão (TX). Todos os exemplos de configuração neste documento se aplicam somente a filas TX em uma 6800ia.
Quando não há uma configuração de QoS explícita presente nas interfaces 6800ia no estado padrão, a interface do host 6800ia pode ser semelhante a esta saída de exemplo:
6880-VSS#show run int gi101/1/0/1
interface GigabitEthernet101/1/0/1
switchport
switchport trunk allowed vlan 500
switchport mode access
switchport access vlan 500
load-interval 30
end
6880-VSS#show queueing interface gi101/1/0/1
Interface GigabitEthernet101/1/0/1 queueing strategy: Weighted Round-Robin
Port QoS is disabled globally
Queueing on Gi101/1/0/1: Tx Enabled Rx Disabled
Trust boundary disabled
Trust state: trust DSCP
Trust state in queueing: trust DSCP
Default COS is 0
Queueing Mode In Tx direction: mode-dscp
Transmit queues [type = 1p3q3t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
1 Priority 3
2 WRR 3
3 WRR 3
4 WRR 3
WRR bandwidth ratios: 100[queue 2] 100[queue 3] 100[queue 4] 0[queue 5]
queue-limit ratios: 15[Pri Queue] 25[queue 2] 40[queue 3] 20[queue 4]
queue thresh dscp-map
---------------------------------------
1 1 32 33 40 41 42 43 44 45 46 47
1 2
1 3
2 1 16 17 18 19 20 21 22 23 26 27 28 29 30 31 34 35 36 37 38 39
2 2 24
2 3 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
3 1 25
3 2
3 3 0 1 2 3 4 5 6 7
4 1 8 9 11 13 15
4 2 10 12 14
4 3
Este exemplo mostra como você pode configurar larguras de banda para filas 6800ia TX:
class-map type lan-queuing match-any ltest
match dscp 32
class-map type lan-queuing match-any ltest1
match dscp 24
class-map type lan-queuing match-any ltest2
match dscp default
policy-map type lan-queuing ltest
class type lan-queuing ltest
priority
class type lan-queuing ltest1
bandwidth remaining percent 30
class type lan-queuing ltest2
bandwidth remaining percent 20
class class-default
Note: Quando você aplica um mapa de política de enfileiramento de lan a uma porta em uma pilha 6800ia, ele propaga as alterações para todas as portas na pilha.
6880-VSS#conf t
6880-VSS(config)#int gi101/1/0/1
6880-VSS(config-if)#service-policy type lan-queuing output ltest
Propagating [attach] lan queueing policy "ltest" to Gi101/1/0/1 Gi101/1/0/2 Gi101/1/0/3
Gi101/1/0/4 Gi101/1/0/5 Gi101/1/0/6 Gi101/1/0/7 Gi101/1/0/8 Gi101/1/0/9 Gi101/1/0/10
Gi101/1/0/12 Gi101/1/0/13 Gi101/1/0/14 Gi101/1/0/15 Gi101/1/0/16 Gi101/1/0/17
Gi101/1/0/18 Gi101/1/0/19 Gi101/1/0/20 Gi101/1/0/21 Gi101/1/0/22 Gi101/1/0/23
Gi101/1/0/24 Gi101/1/0/25 Gi101/1/0/26 Gi101/1/0/27 Gi101/1/0/28 Gi101/1/0/29
Gi101/1/0/30 Gi101/1/0/31 Gi101/1/0/32 Gi101/1/0/33 Gi101/1/0/34 Gi101/1/0/35
Gi101/1/0/36 Gi101/1/0/37 Gi101/1/0/38 Gi101/1/0/39 Gi101/1/0/40 Gi101/1/0/41
Gi101/1/0/42 Gi101/1/0/43 Gi101/1/0/44 Gi101/1/0/45 Gi101/1/0/46 Gi101/1/0/47 Gi101/1/0/48
Propagating [attach] lan queueing policy "ltest" to Gi101/2/0/1 Gi101/2/0/2
Gi101/2/0/3 Gi101/2/0/4 Gi101/2/0/5 Gi101/2/0/6 Gi101/2/0/7 Gi101/2/0/8
Gi101/2/0/9 Gi101/2/0/10 Gi101/2/0/11 Gi101/2/0/12 Gi101/2/0/13 Gi101/2/0/14
Gi101/2/0/15 Gi101/2/0/16 Gi101/2/0/17 Gi101/2/0/18 Gi101/2/0/19 Gi101/2/0/20
Gi101/2/0/21 Gi101/2/0/22 Gi101/2/0/23 Gi101/2/0/24 Gi101/2/0/25 Gi101/2/0/26
Gi101/2/0/27 Gi101/2/0/28 Gi101/2/0/29 Gi101/2/0/30 Gi101/2/0/31 Gi101/2/0/32
Gi101/2/0/33 Gi101/2/0/34 Gi101/2/0/35 Gi101/2/0/36 Gi101/2/0/37 Gi101/2/0/38
Gi101/2/0/39 Gi101/2/0/40 Gi101/2/0/41 Gi101/2/0/42 Gi101/2/0/43 Gi101/2/0/44
Gi101/2/0/45 Gi101/2/0/46 Gi101/2/0/47 Gi101/2/0/48
Propagating [attach] lan queueing policy "ltest" to Gi101/3/0/1 Gi101/3/0/2
Gi101/3/0/3 Gi101/3/0/4 Gi101/3/0/5 Gi101/3/0/6 Gi101/3/0/7 Gi101/3/0/8
Gi101/3/0/9 Gi101/3/0/10 Gi101/3/0/11 Gi101/3/0/12 Gi101/3/0/13 Gi101/3/0/14
Gi101/3/0/15 Gi101/3/0/16 Gi101/3/0/17 Gi101/3/0/18 Gi101/3/0/19 Gi101/3/0/20
Gi101/3/0/21 Gi101/3/0/22 Gi101/3/0/23 Gi101/3/0/24 Gi101/3/0/25 Gi101/3/0/26
Gi101/3/0/27 Gi101/3/0/28 Gi101/3/0/29 Gi101/3/0/30 Gi101/3/0/31 Gi101/3/0/32
Gi101/3/0/33 Gi101/3/0/34 Gi101/3/0/35 Gi101/3/0/36 Gi101/3/0/37 Gi101/3/0/38
Gi101/3/0/39 Gi101/3/0/40 Gi101/3/0/41 Gi101/3/0/42 Gi101/3/0/43 Gi101/3/0/44
Gi101/3/0/45 Gi101/3/0/46 Gi101/3/0/47 Gi101/3/0/48
Propagating [attach] lan queueing policy "ltest" to Gi101/4/0/1 Gi101/4/0/2
Gi101/4/0/3 Gi101/4/0/4 Gi101/4/0/5 Gi101/4/0/6 Gi101/4/0/7 Gi101/4/0/8
Gi101/4/0/9 Gi101/4/0/10 Gi101/4/0/11 Gi101/4/0/12 Gi101/4/0/13 Gi101/4/0/14
Gi101/4/0/15 Gi101/4/0/16 Gi101/4/0/17 Gi101/4/0/18 Gi101/4/0/19 Gi101/4/0/20
Gi101/4/0/21 Gi101/4/0/22 Gi101/4/0/23 Gi101/4/0/24 Gi101/4/0/25 Gi101/4/0/26
Gi101/4/0/27 Gi101/4/0/28 Gi101/4/0/29 Gi101/4/0/30 Gi101/4/0/31 Gi101/4/0/32
Gi101/4/0/33 Gi101/4/0/34 Gi101/4/0/35 Gi101/4/0/36 Gi101/4/0/37 Gi101/4/0/38
Gi101/4/0/39 Gi101/4/0/40 Gi101/4/0/41 Gi101/4/0/42 Gi101/4/0/43 Gi101/4/0/44
Gi101/4/0/45 Gi101/4/0/46 Gi101/4/0/47 Gi101/4/0/48
6880-VSS(config-if)#
6880-VSS(config-if)#end
6880-VSS#show run int gi101/1/0/1
interface GigabitEthernet101/1/0/1
switchport
switchport trunk allowed vlan 500
switchport mode access
switchport access vlan 500
load-interval 30
service-policy type lan-queuing output ltest
end
6880-VSS#show queueing int gi101/1/0/1
Interface GigabitEthernet101/1/0/1 queueing strategy: Weighted Round-Robin
Port QoS is disabled globally
Queueing on Gi101/1/0/1: Tx Enabled Rx Disabled
Trust boundary disabled
Trust state: trust DSCP
Trust state in queueing: trust DSCP
Default COS is 0
Class-map to Queue in Tx direction
Class-map Queue Id
----------------------------
ltest 1
ltest1 4
ltest2 3
class-default 2
Queueing Mode In Tx direction: mode-dscp
Transmit queues [type = 1p3q3t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
1 Priority 3
2 WRR 3
3 WRR 3
4 WRR 3
WRR bandwidth ratios: 50[queue 2] 20[queue 3] 30[queue 4]
queue-limit ratios: 15[Pri Queue] 100[queue 2] 100[queue 3] 100[queue 4]
queue thresh dscp-map
---------------------------------------
1 1 32
1 2
1 3
2 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
23 25 26 27 28 29 30 31 33 34 35 36 37 38 39 40 41 42 43
44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
2 2
2 3
3 1 0
3 2
3 3
4 1 24
4 2
4 3
Note: Se você não especificar o peso do buffer para uma determinada classe, por padrão ele levará 100%.
+B650Fila 1: 15 / [15+100+100+100] = 4
Fila 2: 100 / [15+100+100+100] ~ 31
Os pesos também são derivados para outras filas.
6880-VSS#remote command fex 101 show mls qos int gi1/0/1 buffer
GigabitEthernet1/0/1
The port is mapped to qset : 1
The allocations between the queues are : 4 31 31 34
6880-VSS#remote command fex 101 show mls qos int gi1/0/1 queueing
GigabitEthernet1/0/1
Egress Priority Queue : enabled
Shaped queue weights (absolute) : 0 0 0 0
Shared queue weights : 0 127 51 76
The port bandwidth limit : 100 (Operational Bandwidth:100.0)
The port is mapped to qset : 1
6880-VSS#remote command fex 101 show mls qos int gi1/0/1 statistic
GigabitEthernet1/0/1 (All statistics are in packets)
dscp: incoming
-------------------------------
0 - 4 : 0 0 0 0 0
5 - 9 : 0 0 0 0 0
10 - 14 : 0 0 0 0 0
15 - 19 : 0 0 0 0 0
20 - 24 : 0 0 0 0 0
25 - 29 : 0 0 0 0 0
30 - 34 : 0 0 0 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 0 0 0 0 0
45 - 49 : 0 0 0 13 0
50 - 54 : 0 0 0 0 0
55 - 59 : 0 0 0 0 0
60 - 64 : 0 0 0 0
dscp: outgoing
-------------------------------
0 - 4 : 0 0 0 0 0
5 - 9 : 0 0 0 0 0
10 - 14 : 0 0 0 0 0
15 - 19 : 0 0 0 0 0
20 - 24 : 0 0 0 0 9118500
25 - 29 : 0 0 0 0 0
30 - 34 : 0 0 516236 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 0 0 0 0 0
45 - 49 : 0 0 0 20 0
50 - 54 : 0 0 0 0 0
55 - 59 : 0 0 0 0 0
60 - 64 : 0 0 0 0
cos: incoming
-------------------------------
0 - 4 : 106 0 0 0 0
5 - 7 : 0 0 0
cos: outgoing
-------------------------------
0 - 4 : 41 0 0 9118505 516236
5 - 7 : 0 0 0
output queues enqueued:
queue: threshold1 threshold2 threshold3
-----------------------------------------------
queue 0: 516255 35 5
queue 1: 12 0 0
queue 2: 0 0 0
queue 3: 9118520 0 0
output queues dropped:
queue: threshold1 threshold2 threshold3
-----------------------------------------------
queue 0: 0 0 0
queue 1: 0 0 0
queue 2: 0 0 0
queue 3: 49823 0 0
Policer: Inprofile: 0 OutofProfile: 0
Este exemplo mostra como você pode configurar larguras de banda e buffers para filas 6800ia TX:
Note: Se você não especificar o peso do buffer para uma determinada classe, por padrão ele levará 100%.
policy-map type lan-queuing ltest
class type lan-queuing ltest
priority
queue-buffers ratio 15
class type lan-queuing ltest1
bandwidth remaining percent 30
queue-buffers ratio 30
class type lan-queuing ltest2
bandwidth remaining percent 20
queue-buffers ratio 40
class class-default
queue-buffer ratio 15
6880-VSS#sh queueing int gi101/1/0/1
Interface GigabitEthernet101/1/0/1 queueing strategy: Weighted Round-Robin
Port QoS is disabled globally
Queueing on Gi101/1/0/1: Tx Enabled Rx Disabled
Trust boundary disabled
Trust state: trust DSCP
Trust state in queueing: trust DSCP
Default COS is 0
Class-map to Queue in Tx direction
Class-map Queue Id
----------------------------
ltest 1
ltest1 4
ltest2 3
class-default 2
Queueing Mode In Tx direction: mode-dscp
Transmit queues [type = 1p3q3t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
1 Priority 3
2 WRR 3
3 WRR 3
4 WRR 3
WRR bandwidth ratios: 50[queue 2] 20[queue 3] 30[queue 4]
queue-limit ratios: 15[Pri Queue] 15[queue 2] 40[queue 3] 30[queue 4]
queue thresh dscp-map
---------------------------------------
1 1 32
1 2
1 3
2 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
22 23 25 26 27 28 29 30 31 33 34 35 36 37 38 39 40 41
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
2 2
2 3
3 1 0
3 2
3 3
4 1 24
4 2
4 3
6880-VSS#remote command fex 101 sh mls qos int gi1/0/1 queueing
GigabitEthernet1/0/1
Egress Priority Queue : enabled
Shaped queue weights (absolute) : 0 0 0 0
Shared queue weights : 0 127 51 76
The port bandwidth limit : 100 (Operational Bandwidth:100.0)
The port is mapped to qset : 1
6880-VSS#remote command fex 101 sh mls qos int gi1/0/1 buffers
GigabitEthernet1/0/1
The port is mapped to qset : 1
The allocations between the queues are : 15 15 40 30
6880-VSS#remote command fex 101 sh mls qos int gi1/0/1 statistic
GigabitEthernet1/0/1 (All statistics are in packets)
dscp: incoming
-------------------------------
0 - 4 : 0 0 0 0 0
5 - 9 : 0 0 0 0 0
10 - 14 : 0 0 0 0 0
15 - 19 : 0 0 0 0 0
20 - 24 : 0 0 0 0 0
25 - 29 : 0 0 0 0 0
30 - 34 : 0 0 0 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 0 0 0 0 0
45 - 49 : 0 0 0 491 0
50 - 54 : 0 0 0 0 0
55 - 59 : 0 0 0 0 0
60 - 64 : 0 0 0 0
dscp: outgoing
-------------------------------
0 - 4 : 0 0 0 0 0
5 - 9 : 0 0 0 0 0
10 - 14 : 0 0 0 0 0
15 - 19 : 0 0 0 0 0
20 - 24 : 0 0 0 0 57864687
25 - 29 : 0 0 0 0 0
30 - 34 : 0 0 29364400 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 0 0 0 0 0
45 - 49 : 0 0 0 775 0
50 - 54 : 0 0 0 0 0
55 - 59 : 0 0 0 0 0
60 - 64 : 0 0 0 0
cos: incoming
-------------------------------
0 - 4 : 5323 0 0 0 0
5 - 7 : 0 0 0
cos: outgoing
-------------------------------
0 - 4 : 1718 0 0 57864691 29364400
5 - 7 : 0 0 0
output queues enqueued:
queue: threshold1 threshold2 threshold3
-----------------------------------------------
queue 0: 29365402 1883 5
queue 1: 793 98 0
queue 2: 0 0 0
queue 3: 530554174 0 0
output queues dropped:
queue: threshold1 threshold2 threshold3
-----------------------------------------------
queue 0: 0 10 0
queue 1: 1 24093 0
queue 2: 0 0 0
queue 3: 2309351 0 0
Policer: Inprofile: 0 OutofProfile: 0
No momento, não há procedimento de verificação disponível para esta configuração.
Esta seção fornece informações que podem ser usadas para o troubleshooting da sua configuração.
A ferramenta Output Interpreter (exclusiva para clientes registrados) é compatível com alguns comandos de exibição.. Use a ferramenta Output Interpreter para visualizar uma análise do resultado gerado pelo comando show..
Note: Consulte Informações Importantes sobre Comandos de Depuração antes de usar comandos debug.
6880-VSS#attach fex 101
Attach FEX:101 ip:192.168.1.101
Trying 192.168.1.101 ... Open
????????FEX-101>en
Password: cisco
FEX-101#
FEX-101#debug platform qos-manager all
QM verbose debugging is on
QM cops debugging is on
QM events debugging is on
QM Statistics debugging is on
FEX-101#exit
[Connection to 192.168.1.101 closed by foreign host]
6880-VSS#conf t
6880-VSS(config)#int gi101/1/0/1
6880-VSS(config-if)# service-policy type lan-queuing output ltest
Propagating [attach] lan queueing policy "ltest" to Gi101/1/0/1
Gi101/1/0/2 Gi101/1/0/3 Gi101/1/0/4 Gi101/1/0/5 Gi101/1/0/6 Gi101/1/0/7 Gi101/1/0/8
Gi101/1/0/9 Gi101/1/0/10 Gi101/1/0/12 Gi101/1/0/13 Gi101/1/0/14 Gi101/1/0/15 Gi101/1/0/16
<snip>
6880-VSS(config-if)#end
6880-VSS#remote command fex 101 show log
<snip>
May 20 06:43:18.208: HQM: hulc_fex_qos_priority_handler: hulc_fex_qos_priority_handler:
****Setting Priority Queue (FEX-101)
May 20 06:43:18.208: HQM: hulc_fex_qos_priority_handler: hulc_fex_qos_priority_handler:
subopcode=2 startport=0 endport=0 size=4 (FEX-101)
May 20 06:43:18.208: HQM: hulc_f
_fex_qos_priority_handler:QueueNum=1 PriorityQueue=1 queuetype=2 thresholdsnum=3 (FEX-101)
May 20 06:43:18.212: HQM: hulc_fex_qos_priority_handler: hulc_fex_qos_priority_handler:
idb=GigabitEthernet1/0/1 (FEX-101)
May 20 06:43:18.212: HQM: hulc_fex_qos_priority_handler: hulc_fex_qos_priority_handler:
idb=GigabitEthernet1/0/2 (FEX-101)
May 20 06:43:18.212: HQM: hulc_fex_qos_priority_handler: hulc_fex_qos_priority_handler:
idb=GigabitEthernet1/0/3 (FEX-101)
<snip>
hulc_fex_qos_srr_weight_setting:****Setting weight for queues**** (FEX-101)
May 20 06:43:18.232: HQM: hulc_fex_qos_srr_weight_setting: hulc_fex_qos_srr_weight_setting:
subopcode=2 startport=0 endport=0 size=4 (FEX-101)
May 20 06:43:18.232: HQM: hulc_fex_qos_srr_weight_setting: hulc_fex_qos_srr_weight_setting:
QueueNum=1 RRType=0 WeightRelative=0 WeightAbsolute=0 (FEX-101)
20 06:43:18.232: HQM: hulc_fex_qos_srr_weight_setting: hulc_fex_qos_srr_weight_setting:
ratio is 0 for queue 1 (FEX-101)
May 20 06:43:18.232: HQM: hulc_fex_qos_srr_weight_setting: hulc_fex_qos_srr_weight_setting:
QueueNum=2 RRType=0 WeightRelative=33 WeightAbsolute=0 (FEX-101)
<snip>
20 06:43:19.110: HQM: hulc_fex_qos_buffer_conf: **Setting buffer for output queues** (FEX-101)
May 20 06:43:19.110: HQM: hulc_fex_qos_buffer_conf: hulc_fex_qos_buffer_conf:
subopcode=2 startport=0 endport=0 size=4 (FEX-101)
May 20 06:43:19.110: HQM: hulc_fex_qos_buffer_conf: hulc_fex_qos_buffer_conf:
queuenum=1 size=15 (FEX-101)
May 20 06:43:19.110: HQM: hulc_fex_qos_buffer_conf:
hulc_fex_qos_buffer_conf: queuenum=2 size=25 (FEX-101)
May 20 06:43:19.110: HQM: hulc_fex_qos_buffer_conf:
hulc_fex_qos_buffer_conf: queuenum=3 size=40 (FEX-101)
May 20 06:43:19.110: HQM: hulc_fex_qos_buffer_conf:
hulc_fex_qos_buffer_conf: queuenum=4 size=20 (FEX-101)
May 20 06:43:19.110: HQM: hqm
20 06:43:19.113: HQM: s88g_qd_get_queue_threshold: s88g_qd_get_queue_threshold:
max_limit = 3200, set to 350. (FEX-101)
May 20 06:43:19.113: HQM: s88g_qd_get_queue_threshold: s88g_qd_get_queue_threshold:
max_limit = 3200, set to 350. (FEX-101)
<snip>
hulc_fex_qos_qthresh_map:****Setting dscp to output queue map**** (FEX-101)
May 20 06:43:19.169: HQM: hulc_fex_qos_qthresh_map: hulc_fex_qos_qthresh_map:
subopcode=2 startport=0 endport=0 size=1 (FEX-101)
May 20 06:43:19.169: HQM: hulc_fex_qos_qthresh_map: hulc_fex_qos_qthresh_map: DscpBma
20 06:43:19.169: HQM: hulc_fex_qos_qthresh_map: hulc_fex_qos_qthresh_map
dscp=32 iterator=0 (FEX-101)
May 20 06:43:19.169: HQM: hulc_fex_qos_qthresh_map: hulc_fex_qos_qthresh_map
dscp=33 iterator=1 (FEX-101)
May 20 06:43:19.169: HQM: hulc_fex_qos_qthresh_map: hulc_fex_qos_qthresh_map
dscp=40 iterator=2 (FEX-101)
<snip>
Revisão | Data de publicação | Comentários |
---|---|---|
1.0 |
13-Jul-2015 |
Versão inicial |