Configuration Guide User guide

FastIron Configuration Guide 377
53-1002494-02
IPv6 over IPv4 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.
• Hitless management is not supported with IPv6-over-IPv4 tunnels or GRE tunnels. When either
of these tunnel types are enabled on non supported devices, the behavior is as follows:
• The CLI commands that execute a hitless switchover (switch-over-active-role and hitless
reload) are disabled.
• In the event of a failover, the following message is displayed on the console and in the
Syslog, and the entire system is rebooted:
WARNING: All the System will now reload since GRE or IPv6 Tunnel was
configured
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.
Brocade(config)#interface tunnel 1
Brocade(config-tnif-1)#tunnel source ethernet 3/1
Brocade(config-tnif-1)#tunnel destination 198.162.100.1
Brocade(config-tnif-1)#tunnel mode ipv6ip
Brocade(config-tnif-1)#ipv6 enable
This example creates tunnel interface 1 and assigns a link local IPv6 address with an automatically
computed EUI-64 interface ID to it. The IPv4 address assigned to Ethernet interface 3/1 is used as
the tunnel source, while the IPv4 address 192.168.100.1 is configured as the tunnel destination.
The tunnel mode is specified as a manual IPv6 tunnel. Finally, the tunnel is enabled. Note that
instead of entering ipv6 enable, you could specify an IPv6 address, for example, ipv6 address
2001:b78:384d:34::/64 eui-64, which would also enable the tunnel.
Syntax: [no] interface tunnel <number>
For the <number> parameter, specify a value between 1 – 8.
Syntax: [no] tunnel source <ipv4-address> | ethernet <port> | loopback <number> | ve
<number>
The tunnel source can be an IP address or an interface.
For <ipv4-address>, use 8-bit values in dotted decimal notation.
The ethernet | loopback | ve parameter specifies an interface as the tunnel source. If you specify
an Ethernet interface, also specify the port number associated with the interface. If you specify a
loopback, VE, or interface, also specify the loopback, VE, or number, respectively.
Syntax: [no] tunnel destination <ipv4-address>
Specify the <ipv4-address> parameter using 8-bit values in dotted decimal notation.
Syntax: [no] tunnel mode ipv6ip
ipv6ip indicates that this is an IPv6 manual tunnel.
Syntax: ipv6 enable