Unicast Reverse Path Forwarding
In this section:
- Unicast Reverse Path ForwardingThe unicast Reverse Path Forwarding check is used to avoid source IP-based spoofing and a malformed source IP address.
- Configuration Considerations for uRPF
- Unicast Reverse Path Forwarding
FeasibilityThe following table provides support information about uRPF.
- System-Max Changes and uRPFThe following tables describe the system-max values with and without uRPF configured on the device. Note that the values with uRPF configuration after reload are reduced by half.
- Enabling Unicast Reverse Path
ForwardingUnicast Reverse Path Forwarding can be enabled in different modes.
- Configuring unicast Reverse Path Forwarding modesYou can configure the various uRPF modes on a Layer 3 VE or physical interface.
- Enabling uRPF check on PE portsTo enable uRPF check, PE ports must be part of a VE interface. You cannot configure uRPF on physical PE ports.