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Tunnel Interface Commands
PowerConnect provides for the creation, deletion, and management of tunnel
interfaces. They are dynamic interfaces that are created and deleted by user
configuration.
Tunnel interfaces are used for the following purposes.
• IPv4 tunnels
• IPv6 tunnels
Each router interface (port or VLAN interface) may have associated tunnel
interfaces. Each interface can have multiple tunnel interfaces. There is no set
limit to the number of tunnel interfaces associated with a router interface.
There is a compile platform limitation to the number of tunnel interfaces
available to the entire system.
To support IPv4 to IPv6 transition, PowerConnect supports configured
tunnels (RFC 4213) and automatic 6to4 tunnels (RFC 3056). 6to4 tunnels
are automatically formed for IPv4 tunnels carrying IPv6 traffic. The
automatic tunnels IPv4 destination address is derived from the 6to4 IPv6
address of the tunnel’s next hop. PowerConnect can act as a 6to4 border
router that connects a 6to4 site to a 6to4 domain. The border router sends
and receives tunneled traffic from routers in the 6to4 domain that include
other 6to4 border routers and 6to4 relay routers.
Commands in this Chapter
This chapter explains the following commands:
interface tunnel tunnel mode ipv6ip
show interfaces tunnel tunnel source
tunnel destination
2CSPC4.XCT-SWUM2XX1.book Page 1261 Monday, October 3, 2011 11:05 AM