The switch supports only IPv6 unicast addresses. It does not support site-local unicast addresses, anycast addresses, or multicast addresses.
The IPv6 128-bit addresses are represented as a series of eight 16-bit hexadecimal fields separated by colons in the format: n:n:n:n:n:n:n:n. This is an example of an IPv6 address:
For easier implementation, leading zeros in each field are optional. This is the same address without leading zeros:
You can also use two colons (::) to represent successive hexadecimal fields of zeros, but you can use this short version only once in each address:
For more information about IPv6 address formats, address types, and the IPv6 packet header, see the “Implementing IPv6 Addressing and Basic Connectivity” chapter of Cisco IOS IPv6 Configuration Library on Cisco.com.
In the "Implementing Addressing and Basic Connectivity" chapter, these sections apply to the Catalyst 2960, 2960-S, 2960-C, or 2960-X switch:
IPv6 Address Formats
IPv6 Address Output Display
Simplified IPv6 Packet Header