Solution:
First, do the following:
Create VLAN 50, -55:
You should disable STP for gigabitethernet 1/0/9 and gigabitethernet 1/0/10 interfaces, i.e. these protocols
cannot operate simultaneously:
esr(config)# interface gigabitethernet 1/0/9-10
esr(config-if-gi)# spanning-tree disable
Add gigabitethernet 1/0/9 and gigabitethernet 1/0/10 interfaces into VLAN 50-55 in 'general' mode.
esr(config-if-gi)# switchport general allowed vlan add 50-55
esr(config-if-gi)# exit
Main configuration step:
Make gigabitethernet 1/0/10 redundant for gigabitethernet 1/0/9:
esr(config)# interface gigabitethernet 1/0/9
esr(config-if-gi)# backup interface gigabitethernet 1/0/10 vlan 50-55
To view information on redundant interfaces, use the following command:
esr# show interfaces backup
8.11 Mirroring configuration (SPAN/RSPAN)
Traffic mirroring is a feature of the router that allows for redirection of traffic from a specific port of the router
to another port of the same router (local mirroring) or to a remote device (remote mirroring).
In the current firmware version the RSPAN functionality is supported only by
ESR-1000/1200/1500/1511/1700 routers
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