Specifications

IP Switching Commands
ipv6 verify unicast source reachable-via
ISW-86
Cisco IOS IP Switching Command Reference
May 2008
If no ACL is specified in the ipv6 verify unicast source reachable-via command, the router drops the
forged or malformed packet immediately and no ACL logging occurs. The router and interface Unicast
RPF counters are updated.
U RPF events can be logged by specifying the logging option for the ACL entries used by the ipv6 verify
unicast source reachable-via command. Log information can be used to gather information about the
attack, such as source address, time, and so on.
Examples The following example enables Unicast RPF on any interface:
ipv6 verify unicast source reachable-via any
Related Commands Command Description
ipv6 access-list Defines an IPv6 access list and places the router in IPv6 access list
configuration mode.
show ipv6 interface Displays the usability status of interfaces configured for IPv6.