Ipv6 over ipv4 tunnels, Ipv6 over ipv4 tunnel configuration notes, Configuring a manual ipv6 tunnel – Brocade Communications Systems Brocade ICX 6650 User Manual
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Brocade ICX 6650 Administration Guide
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IPv6 over IPv4 tunnels
5
IPv6 over IPv4 tunnels
NOTE
This feature is supported only with the IPv6 Layer 3 PROM and the full Layer 3 image.
To enable communication between isolated IPv6 domains using the IPv4 infrastructure, you can
manually configure IPv6 over IPv4 tunnels that provide static point-point connectivity.
, these tunnels encapsulate an IPv6 packet within an IPv4 packet.
FIGURE 10
IPv6 over an IPv4 tunnel
In general, a manually configured tunnel establishes a permanent link between switches in IPv6
domains. A manually configured tunnel has explicitly configured IPv4 addresses for the tunnel
source and destination.
This tunneling mechanism requires that the Layer 3 switch at each end of the tunnel run both IPv4
and IPv6 protocol stacks. The Layer 3 switches running both protocol stacks, or dual-stack routers,
can interoperate directly with both IPv4 and IPv6 end systems and routers. Refer to
IPv4 and IPv6 protocol stacks”
IPv6 over IPv4 tunnel configuration notes
•
The local tunnel configuration must include both source and destination addresses.
•
The remote side of the tunnel must have the opposite source/destination pair.
•
A tunnel interface supports static and dynamic IPv6 configuration settings and routing
protocols.
•
Duplicate Address Detection (DAD) is not currently supported with IPv6 tunnels. Make sure
tunnel endpoints do not have duplicate IP addresses.
•
Neighbor Discovery (ND) is not supported with IPv6 tunnels.
•
If a tunnel source port is a multi-homed IPv4 source, the tunnel will use the first IPv4 address
only. For proper tunnel operation, use the ip address option.
Configuring a manual IPv6 tunnel
You can use a manually configured tunnel to connect two isolated IPv6 domains. You should deploy
this point-to-point tunnelling mechanism if you need a permanent and stable connection.
To configure a manual IPv6 tunnel, enter commands such as the following on a Layer 3 Switch
running both IPv4 and IPv6 protocol stacks on each end of the tunnel.
IPv4 Header
IPv6 Header
IPv6 Data
IPv6 Header
IPv6 Data
IPv6 Header
IPv6 Data
Dual-Stack L3 Switch
IPv6 Traffic Over IPv4 Tunnel
IPv6
Network
IPv6
Network
IPv4
Network
Dual-Stack L3 Switch
IPv6 Host
IPv6 Host