327
Example:
Display the urpf rule generated under vlan2
Switch#show urpf interface vlan 2
10.4.4.4 debug urpf
Command: debug urpf
no debug urpf
Function:
Enable the URPF debugging information; the “no” form of this command
disables the URPF debugging information
Command Mode:
Admin Mode
Parameter:
None
Usage Guide:
Enable the URPF debugging information and view the URPF message
process and the URPF item updating process, which facilitates to locate the failure.
Example:
Enable URPF debugging information display
Switch#debug urpf
10.4.5 URPF Troubleshooting
Proper operation of the URPF protocol depends greatly on whether the corresponding
URPF rules can be applied correctly. If after the URPF configuration is done and the
function does not meet the expectation:
Check if the switch has been configured with the rules conflicting with URPF (URPF
priority is lower than ACL), the ACL rules will validate if confliction exits.
Check if the hardware forward table has already generated a route related to the
ports under the interface. Only when the hardware forwarding table has learnt the
route, it will be applied corresponding ACL rules on this port.
Check if the hardware ACL performance is full which lead to the newly generated
route can not be applied with ACL rules
If the configuration seems normal, however the URPF operation status still not
matched the expectation, please enable the URPF debugging function and check if
the generate URPF rule is correct with show urpf interface command, and send the
result to the technical service center of our company.
10.5 ARP
10.5.1 Introduction to ARP
