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Understanding IPv6
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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
These sections describe the IPv6 protocol features supported by the switch:
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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
39-2
Use the Search field to locate the Cisco IOS software documentation. For example, if you want
information about static routes, you can enter Implementing Static Routes for IPv6 in the search field
to get this document about static routes:
http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-stat_routes_ps6441_TSD_Pro
ducts_Configuration_Guide_Chapter.html
IPv6 Addresses, page 39-2
Supported IPv6 Unicast Routing Features, page 39-2
Unsupported IPv6 and Unicast Routing Features, page 39-8
Limitations, page 39-9
IPv6 and Switch Stacks, page 39-9
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 Wide Unicast Addresses, page 39-4
DNS for IPv6, page 39-4
Path MTU Discovery for IPv6 Unicast, page 39-4
Chapter 39
Configuring IPv6 Unicast Routing
OL-12247-04
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