如何配置流量统计
1、应用场景:
流量统计主要用来对网络故障进行定位,缩小查找故障范围。
如图所示,如果PC访问服务器慢,或者Ping报文丢包,则说明网络中存在故障。可以通过流量统计功能对故障点进行定位。
在SwitchA的GE0/0/1接口入方向和GE0/0/2接口出方向配流量统计,如果出入方向报文数量相同,则说明SwitchA设备没有问题,反之,如果出方向报文比入方向报文少,则说明在SwtichA上丢包,故障点就是SwtichA设备。
同样,可以在SwtichA的GEO/O/2出方向和SwtichB的GE0/0/2的入方向配置流量统计,如果报文统计数量相同,则说明SwtichA到SwitchB的链路没有故障,反之则说明存在故障。
以此类推,可以缩小查找故障范围,快速定位故障点。
2、配置思路:
配置完成之后,可以查看报文统计信息,根据查看到的报文统计数量,判断设备或链路是否存在故障。
3、配置步骤:
(1)在SwitchA上配置流量统计。
<SwitchA> system-view
[SwitchA] acl 3000
[SwitchA-acl-adv-3000] rule permit icmp source 192.168.1.10 0 destination 192.168.1.100 0
[SwitchA-acl-adv-3000] quit
[SwitchA] traffic classifier c1
[SwitchA-classifier-c1] if-match acl 3000
[SwitchA-classifier-c1] quit
[SwitchA] traffic behavior b1
[SwitchA-behavior-b1] statistic enable
[SwitchA-behavior-b1] quit
[SwitchA] traffic policy p1
[SwitchA-trafficpolicy-p1] classifier c1 behavior b1
[SwitchA-trafficpolicy-p1] quit
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] traffic-policy p1 inbound
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] traffic-policy p1 outbound
[SwitchA-GigabitEthernet0/0/2] quit
(2)在SwitchB上配置流量统计。
<SwitchB> system-view
[SwitchB] acl 3000
[SwitchB-acl-adv-3000] rule permit icmp source 192.168.1.10 0 destination 192.168.1.100 0
[SwitchB-acl-adv-3000] quit
[SwitchB] traffic classifier c1
[SwitchB-classifier-c1] if-match acl 3000
[SwitchB-classifier-c1] quit
[SwitchB] traffic behavior b1
[SwitchB-behavior-b1] statistic enable
[SwitchB-behavior-b1] quit
[SwitchB] traffic policy p1
[SwitchB-trafficpolicy-p1] classifier c1 behavior b1
[SwitchB-trafficpolicy-p1] quit
[SwitchB] interface gigabitethernet 0/0/1
[SwitchB-GigabitEthernet0/0/1] traffic-policy p1 outbound
[SwitchB-GigabitEthernet0/0/1] quit
[SwitchB] interface gigabitethernet 0/0/2
[SwitchB-GigabitEthernet0/0/2] traffic-policy p1 inbound
[SwitchB-GigabitEthernet0/0/2] quit
4、验证配置效果:
(3)查看流量统计信息。
在PC上Ping服务器,使用display命令查看报文统计信息。
[SwitchA] display traffic policy statistics interface gigabitethernet 0/0/1
inbound Interface: GigabitEthernet0/0/1
Traffic policy inbound: p1
Rule number: 1
Current status: OK!
---------------------------------------------------------------------
Board : 0
Item Packets Bytes
---------------------------------------------------------------------
Matched 0 0
+--Passed 0 0
+--Dropped 0 0
+--Filter 0 0
+--URPF - -
+--CAR 0 0