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In the Cat4500 line, IPv6 forwarding in hardware is found on the WS-X45-Sup6-E and WS-X45-SUP6L-E supervisors, and like Cisco’s other current L3 switching platforms, IPv6 features are found in IPBASE. Beware, though, as older supervisors do not provide hardware forwarding of IPv6 data, resulting in very poor IPv6 performance.


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