Cisco Cisco IOS Software Release 12.4(15)T
Protected Port on EtherSwitch HWICs on Modular Integrated Services Routers
How to Configure Protected Port on EtherSwitch HWICs on Modular Integrated Services Routers
3
Cisco IOS Release 12.4(15)T
Protected ports have these features:
•
A protected port does not forward any traffic (unicast, multicast, or broadcast) to any other port that
is also a protected port. Traffic cannot be forwarded between protected ports at Layer 2; all traffic
passing between protected ports must be forwarded through a Layer 3 device.
is also a protected port. Traffic cannot be forwarded between protected ports at Layer 2; all traffic
passing between protected ports must be forwarded through a Layer 3 device.
•
Forwarding behavior between a protected port and a nonprotected port proceeds as usual.
The default is to have no protected ports defined.
How to Configure Protected Port on EtherSwitch HWICs on
Modular Integrated Services Routers
Modular Integrated Services Routers
This section explains how to configure the protected port feature on the 4- and 9-port HWICs in a
modular ISR.
modular ISR.
Restrictions
The protected port feature can be configured only on the switch ports attached to the specified HWICs
in a Cisco ISR.
in a Cisco ISR.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
interface [interface id]
4.
switchport protected
5.
end