Cisco Systems 3560 사용자 설명서

The switch cannot forward SNAP-encapsulated IPv6 packets. 

There is a similar limitation for IPv4 SNAP-encapsulated packets, but the packets are 
dropped at the switch and are not forwarded.

The switch routes IPv6-to-IPv4 and IPv4-to-IPv6 packets in hardware, but the switch cannot be an 
IPv6-to-IPv4 or IPv4-to-IPv6 tunnel endpoint.

Bridged IPv6 packets with hop-by-hop extension headers are forwarded in software. In IPv4, these 
packets are routed in software, but bridged in hardware.

In addition to the normal SPAN and RSPAN limitations defined in the software configuration guide, 
these limitations are specific to IPv6 packets:

When you send RSPAN IPv6-routed packets, the source MAC address in the SPAN output 
packet can be incorrect.

When you send RSPAN IPv6-routed packets, the destination MAC address can be incorrect. 
Normal traffic is not affected.

The switch cannot apply QoS classification or policy-based routing on source-routed IPv6 packets 
in hardware. 

The switch cannot generate ICMPv6 

 messages for multicast packets.

These sections contain this IPv6 forwarding configuration information: