One has to love these little snippets dispersed across CCO. Reading up on Ether Switch Modules (ESM) I came across this little ‘Note’:

Layer 3 IPv6 packets are dropped when received by the switch.

I’m not sure if anyone can verify this for me, I should have a HWIC-4ESW somewhere but not in my CCIE lab so can’t lab this now. It seems rather silly not to having IPv6 support on there, especially with the increasing talk about ‘having’ to migrate to IPv6 ‘soon’. Would be even worse if you can Ipv6 enable the vlans on an ESW but it drops received IPv6 packets…

Categories: CCIE R&S, Main blog, Work
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