C H A P T E R 36 Configuring Ipv6 Unicast Routing; Ipv6 Addresses; Supported Ipv6 Unicast Routing Features - Cisco ME 3400 Software Configuration Manual

Understanding IPv6
This section describes IPv6 implementation on the switch. These sections are included:
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IPv6 Addresses

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 "Information About Implementing Basic Connectivity for IPv6" chapter, these sections apply to
the switch:
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Supported IPv6 Unicast Routing Features

Support on the switch includes expanded address capability, header format simplification, improved
support of extensions and options, and hardware parsing of the extension header. The switch supports
hop-by-hop extension header packets, which are routed or bridged in software.
The switch provides IPv6 routing capability over 802.1Q trunk ports for static routes, Routing
Information Protocol (RIP) for IPv6, and Open Shortest Path First (OSPF) Version 3 Protocol. It
supports up to 16 equal-cost routes and can simultaneously forward IPv4 and IPv6 frames at line rate.
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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
36-2
IPv6 Addresses, page 36-2
Supported IPv6 Unicast Routing Features, page 36-2
Unsupported IPv6 Unicast Routing Features, page 36-7
Limitations, page 36-7
2031:0000:130F:0000:0000:09C0:080F:130B
2031:0:130F:0:0:9C0:80F:130B
2031:0:130F::09C0:080F:130B
IPv6 Address Formats
IPv6 Address Type: Unicast
IPv6 Address Output Display
Simplified IPv6 Packet Header
128-Bit Unicast Addresses, page 36-3
DNS for IPv6, page 36-3
Path MTU Discovery for IPv6 Unicast, page 36-4
ICMPv6, page 36-4
Chapter 36 Configuring IPv6 Unicast Routing
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