Cisco Systems 3130 User Manual
39-3
Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter 39 Configuring IPv6 Unicast Routing
Understanding IPv6
For more information about IPv6 address formats, address types, and the IPv6 packet header, go to
“Implementing Basic Connectivity for IPv6” chapter of the Cisco IOS IPv6 Configuration Library at this
URL:
“Implementing Basic Connectivity for IPv6” chapter of the Cisco IOS IPv6 Configuration Library at this
URL:
In the “Information About Implementing Basic Connectivity for IPv6” section, these sections apply to
the switch:
the switch:
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IPv6 Address Formats
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IPv6 Address Type: Unicast
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IPv6 Address Output Display
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Simplified IPv6 Packet Header
Supported IPv6 Unicast Routing Features
These sections describe the IPv6 protocol (RFC 2460) features supported by the switch:
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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.
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 native Ethernet Inter-Switch Link (ISL) or 802.1Q
trunk ports for static routes, Routing Information Protocol (RIP) for IPv6 (RFC 2080), and Open
Shortest Path First (OSPF) Version 3 protocol (RFC 2740). It supports up to 16 equal-cost routes and
can forward IPv4 and IPv6 frames simultaneously at line rate.
trunk ports for static routes, Routing Information Protocol (RIP) for IPv6 (RFC 2080), and Open
Shortest Path First (OSPF) Version 3 protocol (RFC 2740). It supports up to 16 equal-cost routes and
can forward IPv4 and IPv6 frames simultaneously at line rate.
128-Bit Wide Unicast Addresses
The switch supports aggregatable global unicast addresses and link-local unicast addresses (RFC 2373).
It does not support site-local unicast addresses.
It does not support site-local unicast addresses.
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Aggregatable global unicast addresses are IPv6 addresses from the aggregatable global unicast
prefix. The address structure enables strict aggregation of routing prefixes and limits the number of
routing table entries in the global routing table. These addresses are used on links that are aggregated
through organizations and eventually to the Internet service provider.
prefix. The address structure enables strict aggregation of routing prefixes and limits the number of
routing table entries in the global routing table. These addresses are used on links that are aggregated
through organizations and eventually to the Internet service provider.
These addresses are defined by a global routing prefix, a subnet ID, and an interface ID. Current
global unicast address allocation uses the range of addresses that start with binary value 001
(2000::/3). Addresses with a prefix of 2000::/3(001) through E000::/3(111) must have 64-bit
interface identifiers in the extended universal identifier (EUI)-64 format.
global unicast address allocation uses the range of addresses that start with binary value 001
(2000::/3). Addresses with a prefix of 2000::/3(001) through E000::/3(111) must have 64-bit
interface identifiers in the extended universal identifier (EUI)-64 format.