- Read Me First
- mGRE Tunnel Support over IPv6
- IP over IPv6 Tunnels
- Manually Configured IPv6 over IPv4 Tunnels
- Configuring Physical Interfaces
- Configuring Virtual Interfaces
- Implementing Tunnels
- Tunnel Route Selection
- MPLS VPN over mGRE
- IP Tunnel MIBs
- IF-MIBs
- Synchronous Ethernet (SyncE) ESMC and SSM
- 1+1 SR-APS Without Bridging
- IPv6 Rapid Deployment
- IPv6 Automatic 6to4 Tunnels
- IPv6 over IPv4 GRE Tunnels
- GRE IPv6 Tunnels
- ISATAP Tunnel Support for IPv6
- VRF-Aware Tunnels
- Ethernet over GRE Tunnels
- QoS on Ethernet over GRE Tunnels
- VRF-Aware IPv6 Rapid Deployment Tunnel
- IP Tunnel - GRE Key Entropy Support
Interface and Hardware Component Configuration Guide, Cisco IOS XE Fuji 16.7.x
- Updated:
- April 4, 2018
Chapter: IPv6 Rapid Deployment
IPv6 Rapid Deployment
The IPv6 rapid deployment feature allows a service provider to provide a unicast IPv6 service to customers over its IPv4 network by using encapsulation of IPv6 in IPv4.
- Finding Feature Information
- Information About IPv6 Rapid Deployment
- How to Configure IPv6 Rapid Deployment
- Configuration Examples for IPv6 Rapid Deployment
- Additional References
- Feature Information for IPv6 Rapid Deployment
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About IPv6 Rapid Deployment
IPv6 Rapid Deployment Tunnels
The 6RD feature is an extension of the 6to4 feature. The 6RD feature allows a service provider (SP) to provide a unicast IPv6 service to customers over its IPv4 network by using encapsulation of IPv6 in IPv4.
The main differences between 6RD and 6to4 tunneling are as follows:
6RD does not require addresses to have a 2002::/16 prefix; therefore, the prefix can be from the SP’s own address block. This function allows the 6RD operational domain to be within the SP network. From the perspective of customer sites and the general IPv6 internet connected to a 6RD-enabled SP network, the IPv6 service provided is equivalent to native IPv6.
All 32 bits of the IPv4 destination need not be carried in the IPv6 payload header. The IPv4 destination is obtained from a combination of bits in the payload header and information on the router. Furthermore, the IPv4 address is not at a fixed location in the IPv6 header as it is in 6to4.
The 6RD SP prefix was selected by the SP for the IPv6 deployment shown in the figure below. The 6RD delegated prefix is derived from the SP prefix and the IPv4 address bits, and is used by the CE for hosts within its site.
The figure below shows how 6RD prefix delegation works.
The figure below shows a 6RD prefix delegation topology.
How to Configure IPv6 Rapid Deployment
Configuring 6RD Tunnels
1.
enable
2.
configure
terminal
3.
interface
tunnel
tunnel-number
4.
tunnel
source
{ip-address|
interface-t
ype
interface-number}
5.
tunnel
mode
ipv6ip
[6rd |
6to4 |
auto-tunnel |
isatap]
6.
tunnel
6rd
prefix
ipv6-prefix
/
prefix-length
7.
tunnel
6rd
ipv4
{prefix-length
length} {suffix-length
length}
DETAILED STEPS
Configuration Examples for IPv6 Rapid Deployment
Example: Configuring 6RD Tunnels
The following example shows the running configuration of a 6RD tunnel and the corresponding output of the show tunnel 6rd command:
interface Tunnel1 ipv6 address 2001:B000:100::1/32 tunnel source loopback 1 tunnel mode ipv6ip 6rd tunnel 6rd prefix 2001:B000::/32 tunnel 6rd ipv4 prefix-len 16 suffix-len 8 end Router# show tunnel 6rd tunnel 1 Interface Tunnel1: Tunnel Source: 10.1.1.1 6RD: Operational, V6 Prefix: 2001:B000::/32 V4 Common Prefix Length: 16, Value: 10.1.0.0 V4 Common Suffix Length: 8, Value: 0.0.0.1
Additional References
Related Documents
Related Topic |
Document Title |
|---|---|
|
IPv6 addressing and connectivity |
|
|
Cisco IOS commands |
|
|
IPv6 commands |
|
|
Cisco IOS IPv6 features |
Standards and RFCs
Standard/RFC |
Title |
|---|---|
|
RFCs for IPv6 |
Technical Assistance
Description |
Link |
|---|---|
|
The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for IPv6 Rapid Deployment
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.Feature Name |
Releases |
Feature Information |
|---|---|---|
|
IP Tunneling: 6RD IPv6 Rapid Deployment |
Cisco IOS XE Release 3.1S |
The 6RD feature allows a service provider to provide a unicast IPv6 service to customers over its IPv4 network by using encapsulation of IPv6 in IPv4. The following commands were introduced or modified: tunnel 6rd ipv4, tunnel 6rd prefix, tunnel mode ipv6ip, tunnel source. |
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