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The Catalyst 4900M and Catalyst 4948E switches are the IPv6-capable platforms in the 4900 series. Both of these switches support IPv6 in all IOS images, so there is no need for an additional IOS license, either. Like the Cat4500, though, the older WS-C4948 and WS-C4948-10GE switches do not provide IPv6 forwarding in hardware.


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