sw3560-siplabs#sh ru | include monitor
monitor session 1 source interface Fa0/3
monitor session 1 destination interface Fa0/11
sw3560-siplabs#sh ru int fa0/3
Building configuration...Current configuration : 108 bytes
!
interface FastEthernet0/3
switchport access vlan 11
switchport mode access
spanning-tree portfast
end
sw3560-siplabs#sh ru int fa0/11
Building configuration...
Current configuration : 34 bytes
!
interface FastEthernet0/11
end
sw3560-siplabs#show monitor
Session 1
---------
Type : Local Session
Source Ports :
Both : Fa0/3
Destination Ports : Fa0/11
Encapsulation : Native
Ingress : Disabled
sw3560-siplabs
Есть такая конфигурация, fa0/11 подключен интерфейсу eth0 на дебиане, на интерфейсе ip-адрес, не настроен, траффика на интерфейсе нет?