Manual

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Москва, Новозаводская ул., 18, стр. 1
335
Interface ethernet1/0/9 is the source port which is connected to the source switch.
Interface ethernet1/0/10 is the destination port which is connected to the monitor. This port is
required to be configured as an access port, and belong to the RSPAN VLAN.
RSPAN VLAN is 5.
Switch(config)#vlan 5
Switch(Config-Vlan5)#remote-span
Switch(Config-Vlan5)#exit
Switch(config)#interface ethernet 1/0/9
Switch(Config-If-Ethernet1/0/9)#switchport mode trunk
Switch(Config-If-Ethernet1/0/9)#exit
Switch(config)#interface ethernet 1/0/10
Switch(Config-If-Ethernet1/0/10)#switchport access vlan 5
Switch(Config-If-Ethernet1/0/10)#exit
37.4 RSPAN Troubleshooting
Due to the following reasons, RSPAN may not function:
Whether the destination mirror port is a member of the Port-channel group. If so, please
change the Port-channel group configuration;
The throughput the destination port is less than the total throughput of the source mirror ports.
If so, the destination cannot catch all the datagrams from every source ports. To solve the
problem, please reduce the number of the source ports, or mirror only single direction data
flow, or choose some other port with higher capacity as the destination port.
Between the source switch and the intermediate switch, whether the native VLAN of the
TRUNK ports is configured as RSPAN VLAN. If so, please change the native VLAN for the
TRUNK ports.