uRPF Configuration
show interface urpf
[Command] show interface urpf
[Purpose] View interface URPF configuration
[View] System View
[Use Cases]
sonic# show interface urpf
+-----------------+----------+
| Interfaces | Status |
+=================+==========+
| Ethernet1 | strict |
+-----------------+----------+
| Vlan123 | strict |
+-----------------+----------+
| PortChannel0001 | loose |
+-----------------+----------+ip urpf
[Command] ip urpf {strict|loose} no ip urpf
[Purpose] Configure interface URPF function
[Parameter]
Parameter | Description |
|---|---|
strict | Strict mode, not only checks whether the traffic has a return route, but also verifies whether the return interface is the same as the initial incoming interface of the traffic |
loose | Loose mode, only checks whether the traffic has a return route; if it exists, the traffic is permitted; if not, it is discarded |
[View] Interface View、LAG View、VLANIF View
[Usage Scenario] Enable the URPF function on the traffic incoming interface to verify whether the traffic has a return route, ensuring that the server is not impacted by unknown traffic.
[Use Cases]
sonic(config)# interface ethernet 1
sonic(config-if-1)# ip urpf strict