【H3C】 流量統計

配置步驟

定義acl，匹配SwitchA訪問SwitchB的流量，在做流量統計時應盡量保證匹配的情況精確，避免抓取到其他業務流量，使流量統計不准確。

[H3C]acl number 999

[H3C-acl-adv-999]description traffic accounting for host SwitchA to host SwitchB

[H3C-acl-adv-999]rule 10 permit icmp source 2.2.2.2 0 destination 3.3.3.3 0 

定義流分類，匹配acl定義的PCA訪問PCB的web流量。

[H3C]traffic classifier traffic_accounting_from_SwitchA_to_SwitchB

[H3C-classifier-traffic_accounting_from_SwitchA_to_SwitchB]if-match acl 999

定義流行為，統計報文個數

[H3C]traffic behavior traffic_accounting_from_SwitchA_to_SwitchB

[H3C-behavior-traffic_accounting_from_SwitchA_to_SwitchB]accounting packet

定義qos策略，關聯流分類和流行為

[H3C]qos policy traffic_accounting_from_SwitchA_to_SwitchB

[H3C-qospolicy-traffic_accounting_from_SwitchA_to_SwitchB]classifier traffic_accounting_from_SwitchA_to_SwitchB behavior traffic_accounting_from_SwitchA_to_SwitchB

在2/0/1的入方向和2/0/2的出訪問下發qos策略，來統計報文是否到達設備和是否被設備轉發給SwitchB。

[H3C]interface GigabitEthernet2/0/1

[H3C-GigabitEthernet2/0/1]qos apply policy traffic_accounting_from_SwitchA_to_SwitchB inbound

[H3C]interface GigabitEthernet2/0/2

[H3C-GigabitEthernet2/0/2]qos apply policy traffic_accounting_from_SwitchA_to_SwitchB outbound

使SwitchA訪問SwitchB，查看接口GigabitEthernet2/0/1流量統計結果

[H3C]display qos policy interface GigabitEthernet 2/0/1

  Interface: GigabitEthernet2/0/1

  Direction: Inbound

  Policy: traffic_accounting_from_SwitchA_to_SwitchB
   Classifier: traffic_accounting_from_SwitchA_to_SwitchB
     Operator: AND
     Rule(s) : If-match acl 999
     Behavior: traffic_accounting_from_SwitchA_to_SwitchB
      Accounting Enable:
        5 (Packets)

根據結果看出有5個報文進行交換機。查看接口GigabitEthernet2/0/2流量統計結果

[H3C]display qos policy interface GigabitEthernet 2/0/2

  Interface: GigabitEthernet2/0/2

  Direction: Outbound

  Policy: traffic_accounting_from_SwitchA_to_SwitchB
   Classifier: traffic_accounting_from_SwitchA_to_SwitchB
     Operator: AND
     Rule(s) : If-match acl 999
     Behavior: traffic_accounting_from_SwitchA_to_SwitchB
      Accounting Enable:
        5 (Packets)

有5個報文從交換機發出，說明從A到B轉發正常

配置文件

#
acl number 999 
 description traffic accounting for host SwitchA to host SwitchB
 rule 10 permit icmp source 2.2.2.2 0 destination 3.3.3.3 0 acl number 
#
traffic classifier traffic_accounting_from_SwitchA_to_SwitchB 
 if-match acl 999
#
traffic behavior traffic_accounting_from_SwitchA_to_SwitchB
 accounting packet
#
qos policy traffic_accounting_from_SwitchA_to_SwitchB
 classifier traffic_accounting_from_SwitchA_to_SwitchB behavior traffic_accounting_from_SwitchA_to_SwitchB
#
interface GigabitEthernet2/0/1
 qos apply policy traffic_accounting_from_SwitchA_to_SwitchB inbound
#
interface GigabitEthernet2/0/2
 qos apply policy traffic_accounting_from_SwitchA_to_SwitchB outbound

注意事項

1. 對匹配的流量計一定要盡量精確，避免其他流量影響統計結果。

2. 注意流量雙向性和qos策略下發的方向要正確下發。