4、Configuring RSPAN——配置远程RSPAN　　RSPAN的Session分成RSPAN Source Session和RSPAN Destination Session两部分，所以相应的配置也要分别在Session的源和目的交换机上做。
　　4.1、首先要配置专用的RSPAN VLAN

Switch(config)# no monitor session 2Switch(config)# monitor session 2 source interface fastethernet0/48 rxSwitch(config)# monitor session 2 filter vlan 100 - 102 //指定受控的VLAN范围Switch(config)# monitor session 2 destination interface fastethernet0/30Switch#sh mon ses 2Session 2---------Type : Local SessionSource Ports :Both : Fa0/48Destination Ports : Fa0/30Encapsulation : NativeIngress: DisabledFilter VLANs : 100-102 //只监控VLAN100-102中的流量

　　4.2、配置RSPAN Source Session

Switch(config)# vlan 800Switch(config-vlan)# remote-spanSwitch(config-vlan)# endsw1#sh vl id 800VLAN Name Status Ports---- -------------------------------- 800 VLAN0800 active Fa0/47, Fa0/48VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2---- ----- ---------- ----- ------ 800 enet 100800 1500 - - - - - 0 0Remote SPAN VLAN----------------Enabled //注意看此处的提示Primary Secondary Type Ports------- --------- -----------------

　　4.3、配置RSPAN Destination Session

Switch(config)# no monitor session 1Switch(config)# monitor session 1 source interface fastethernet0/10 - 13Switch(config)# monitor session 1 source interface fastethernet0/15 rxSwitch(config)# monitor session 1 destina remote vlan 800 reflector-port fa0/20sw1#sh mo se 1Session 1---------Type : Remote Source SessionSource Ports :RX Only : Fa0/11-13,Fa0/15Both : Fa0/10Reflector Port : Fa0/20Dest RSPAN VLAN : 800

　　（VLAN-Based RSPAN）基于VLAN的RSPAN也和上面的方法类似，只不过受控的是整个VLAN.启用监控端口的二层转发以及Specifying VLANs to Filter 的方法也和本地SPAN相同，此处不再举例。详见CISCO CD.
五、Catalyst 4000/4500系列交换机的SPAN配置
　　Configuring SPAN
　　命令如下：
　　set span {src_mod/src_ports | src_vlan | sc0} dest_mod/dest_port [rx | tx | both] [inpkts {enable | disable}] [learning {enable | disable}] [multicast {enable | disable}] [create]
　　set span中的create参数用于创建多个SPAN Session.
　　show span
　　set span disable [dest_mod/dest_port | all]
　　举例：
This example shows how to configure SPAN so that both the transmit and receive
traffic from port 2/4 (the SPAN source) is mirrored on port 3/6 (the SPAN destination):
Console> (enable) set span 2/4 3/6
// Overwrote Port 3/6 to monitor transmit/receive traffic of Port 2/4
Incoming Packets disabled. Learning enabled.
Console> (enable) show span
Destination : Port 3/6
Admin Source : Port 2/4
Oper Source : None
Direction : transmit/receive
Incoming Packets: disabled
Learning : enabled
Filter : -
Status : active
----------------------------------------------
Total local span sessions: 1
Console> (enable)
This example shows how to set VLAN 522 as the SPAN source and port 2/1 as the SPAN destination:
Console> (enable) set span 522 2/1
// Overwrote Port 2/1 to monitor transmit/receive traffic of VLAN 522
Incoming Packets disabled. Learning enabled.
Console> (enable) show span
Destination : Port 2/1
Admin Source : VLAN 522
Oper Source : Port 2/1-2
Direction : transmit/receive
Incoming Packets: disabled
Learning : enabled
Filter : -
Status : active
----------------------------------------------
Total local span sessions: 1
Console> (enable)
Configuring RSPAN
命令如下：
set vlan vlan_num [rspan]
show vlan
set rspan source {mod/ports... | vlans...} {rspan_vlan} reflector mod/port [rx | tx | both]
[filter vlans...] [create]
set rspan destination {mod_num/port_num} {rspan_vlan} [inpkts {enable | disable}]
[learning {enable | disable}] [create]
show rspan
set rspan disable source [rspan_vlan | all]
set rspan disable destination [mod_num/port_num | all]
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