Cisco Nexus 3600 NX-OS - Configuration Examples for Unicast RPF; Verifying the Unicast RPF Configuration

PurposeCommand or Action
(Optional)
Displays the IP information for an interface and verifies
if the unicast RPF is enabled.
show ip interface ethernet slot/port
Example:
switch(config)# show ip interface
ethernet 2/3
Step 5
(Optional)
Displays the configuration for an interface in the
running configuration.
show running-config interface ethernet
slot/port
Example:
switch(config)# show running-config
interface ethernet 2/3
Step 6
(Optional)
Copies the running configuration to the startup
configuration.
copy running-config startup-config
Example:
switch(config)# copy running-config
startup-config
Step 7
Configuration Examples for Unicast RPF
The following examples shows how to configure loose Unicast RPF for IPv4/IPv6 packets:
•
interface Ethernet2/3
ip address 172.23.231.240/23
ip verify unicast source reachable-via any
•
interface Ethernet2/3
ipv6 address 2001:0DB8:c18:1::3/64
ipv6 verify unicast source reachable-via any
The following examples shows how to configure strict Unicast RPF for IPv4/IPv6 packets:
•
interface Ethernet2/2
ip address 172.23.231.240/23
ip verify unicast source reachable-via rx
•
interface Ethernet2/2
ipv6 address 2001:0DB8:c18:1::3/64
ipv6 verify unicast source reachable-via rx
Verifying the Unicast RPF Configuration
To display Unicast RPF configuration information, perform one of the following tasks:
PurposeCommand
Displays the interface configuration in the running
configuration.
show running-config interface ethernet slot/port
Cisco Nexus 3600 NX-OS Security Configuration Guide, Release 7.x
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Configuring Unicast RPF
Configuration Examples for Unicast RPF