Remote Span Quick Configuration

by: George El., January 2019, Reading time: 1 minute

remote span quick tip

lets say you want to capture some packets from switch A that is connected to switch B and you have your packet capture device on the swB

You have to specify a vlan on all switches as remote-span

vlan 400
 remote-span

On switch A where your host is connected to gi1/0/1

monitor session 1 source interface gigabitEthernet 1/0/1
monitor session 1 destination remote vlan 400

on switch B, where your packet capture device is connected to gi1/0/5

monitor session 1 source remote vlan 400
monitor session 1 destination interface gigabitEthernet 1/0/5

swA and B should be connected via a trunk link that allows vlan 400. if there are multiple switches in the middle, you have to follow similar steps

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