Specifications

IP Switching Commands
ipv6 cef
ISW-76
Cisco IOS IP Switching Command Reference
May 2008
CEFv6 is advanced Layer 3 IP switching technology that functions the same and offer the same benefits
as CEFv4. CEFv6 optimizes network performance and scalability for networks with dynamic,
topologically dispersed traffic patterns, such as those associated with web-based applications and
interactive sessions.
Examples The following example enables standard CEFv4 operation and then standard CEFv6 operation globally
on the router.
ip cef
ipv6 cef
Related Commands Command Description
ip route-cache Controls the use of high-speed switching caches for IP routing.
ipv6 cef accounting Enables CEFv6 and dCEFv6 network accounting.
ipv6 cef distributed Enables distributed CEFv6.
show cef Displays which packets the line cards dropped or displays which packets
were not express-forwarded.
show ipv6 cef Displays entries in the IPv6 FIB.