On 03/06/2013 08:49, Darren Pilgrim wrote: ... > I'm not sure about other switches, but for the Catalyst 3750/3750G, it > means some quirks with IPv6 ACLs. The 3750/3750D can do ACLs on full > /128's, but only if the lower 64 bits are EUI64.
Huh? How can it possibly know that? (see draft-ietf-6man-ug) Brian > Otherwise the ACLs > only support /64's or shorter. As I understand it, this is because > Cisco made room for IPv6 in the TCAM by encoding the tcp/udp port number > into bits 89-104 of the IPv6 address. Fortunately the 3750-E doesn't > have this limitation. > > References: > http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_52_se/configuration/guide/swv6acl.html#wp4334642 > > https://supportforums.cisco.com/thread/2083329 > >
