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sFlow配置举例
组网需求
如图12-3所示，Network1与Network2之间通过SwitchA互发流量。管理维护人员要求监控GE1/0/2接口的流量信息、转发情况以及设备的整体运行状况，及时发现异常流量，从而保证Network1的正常稳定运行。
配置思路
配置sFlow，在SwitchA上运行sFlow Agent，通过在GE1/0/2上开启sFlow采样功能（包括Flow采样和Counter采样），sFlow Agent能够将采集到的流量统计信息通过sFlow报文从GE1/0/1发向sFlow Collector，然后sFlow Collector根据收到的sFlow报文中携带的流量信息，将网络流量状况显示出来。从而实现对GE1/0/2接口流量信息的监控。
采用如下思路配置sFlow：
- 配置交换机各接口IP地址。
- 在设备上配置sFlow Collector和sFlow Agent信息。
- 配置接口的Flow采样。
- 配置接口的Counter采样。
操作步骤
- 配置SwitchA的接口IP地址
# 按图12-3所示，配置SwitchA的接口IP地址。
<Quidway> system-view [Quidway] sysname SwitchA [SwitchA] vlan batch 10 20 30 [SwitchA] interface gigabitethernet 1/0/1 [SwitchA-GigabitEthernet1/0/1] port link-type access [SwitchA-GigabitEthernet1/0/1] port default vlan 10 [SwitchA-GigabitEthernet1/0/1] quit [SwitchA] interface vlanif 10 [SwitchA-Vlanif10] ip address 10.1.10.1 24 [SwitchA-Vlanif10] quit [SwitchA] interface gigabitethernet 1/0/2 [SwitchA-GigabitEthernet1/0/2] port hybrid pvid vlan 20 [SwitchA-GigabitEthernet1/0/2] port hybrid untagged vlan 20 [SwitchA-GigabitEthernet1/0/2] quit [SwitchA] interface vlanif 20 [SwitchA-Vlanif20] ip address 10.1.20.1 24 [SwitchA-Vlanif20] quit [SwitchA] interface gigabitethernet 1/0/3 [SwitchA-GigabitEthernet1/0/3] port hybrid pvid vlan 30 [SwitchA-GigabitEthernet1/0/3] port hybrid untagged vlan 30 [SwitchA-GigabitEthernet1/0/3] quit [SwitchA] interface vlanif 30 [SwitchA-Vlanif30] ip address 10.1.30.1 24 [SwitchA-Vlanif30] quit
- 配置sFlow Agent和sFlow Collector信息
# 配置sFlow Agent的IP地址。
[SwitchA] sflow agent ip 10.1.10.1# 配置sFlow Collector信息：sFlow Collector的ID为2，IP地址为10.1.10.2，描述信息为netserver。
[SwitchA] sflow collector 2 ip 10.1.10.2 description netserver - 配置Flow采样
# 配置Flow采样的采样比。
[SwitchA] interface gigabitethernet 1/0/2 [SwitchA-GigabitEthernet1/0/2] sflow flow-sampling rate 4000
# 配置经过Flow采样后，sFlow Agent输出sFlow报文的目的sFlow Collector编号为2。
[SwitchA-GigabitEthernet1/0/2] sflow flow-sampling collector 2
- 配置Counter采样
# 配置Counter采样的时间间隔为120秒。
[SwitchA-GigabitEthernet1/0/2] sflow counter-sampling interval 120
# 配置经过Counter采样后，sFlow Agent输出sFlow报文的目的sFlow Collector编号为2。
[SwitchA-GigabitEthernet1/0/2] sflow counter-sampling collector 2 [SwitchA-GigabitEthernet1/0/2] quit [SwitchA] quit
- 验证配置结果
# 配置成功后，执行命令display sflow查看SwitchA的全局sFlow配置。
<SwitchA> display sflow sFlow Version 5 Information: -------------------------------------------------------------------------- Agent Information: IP Address: 10.1.10.1(CLI) Address family: IPV4 Vpn-instance: NA -------------------------------------------------------------------------- Collector Information: Collector ID: 2 IP Address: 10.1.10.2 Address family: IPV4 Vpn-instance: NA Port: 6343 Datagram size: 1400 Time out: NA Description: netserver -------------------------------------------------------------------------- Port on slot 1 Information: Interface: GE1/0/2 Flow-sample collector: 2 Counter-sample collector : 2 Flow-sample rate(1/x): 4000 Counter-sample interval(s): 120 Flow-sample maxheader: 64 Flow-sample direction: IN,OUT -------------------------------------------------------------------------- Port on slot 2 Information: -------------------------------------------------------------------------- Port on slot 3 Information:
配置文件
SwitchA的配置文件
# sysname SwitchA # vlan batch 10 20 30 # interface Vlanif10 ip address 10.1.10.1 255.255.255.0 # interface Vlanif20 ip address 10.1.20.1 255.255.255.0 # interface Vlanif30 ip address 10.1.30.1 255.255.255.0 # interface GigabitEthernet1/0/1 port link-type access port default vlan 10 # interface GigabitEthernet1/0/2 port hybrid pvid vlan 20 port hybrid untagged vlan 20 sflow counter-sampling collector 2 sflow counter-sampling interval 120 sflow flow-sampling collector 2 sflow flow-sampling rate 4000 # interface GigabitEthernet1/0/3 port hybrid pvid vlan 30 port hybrid untagged vlan 30 # sflow collector 2 ip 10.1.10.2 description netserver # sflow agent ip 10.1.10.1 # return
