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544 Configuring Routing
Tunnels
The PowerConnect M6220/M6348/M8024
switches support
the creation, deletion, and management of
tunnel interfaces. These are dynamic interfaces that are created and deleted through user-configuration.
Each switch also supports the functionality of a 6to4 border router that connects a 6to4 site to a 6to4
domain. It sends and receives tunneled traffic from routers in a 6to4 domain that includes other 6to4
border routers and 6to4 relay routers.
There are two classes of tunnels that facilitate the transition of IPv4 networks to IPv6 networks:
configured and automatic. The distinction is that configured tunnels are explicitly configured with a
destination or endpoint of the tunnel. Automatic tunnels, in contrast, infer the endpoint of the tunnel
from the destination address of packets routed into the tunnel.
The PowerConnect M6220/M6348/M8024 supports point-to-point tunnels. Point-to-point interfaces
provide for routing based only on the interface (an explicit next-hop address need not be specified), and
allow for the definition of unnumbered interfaces.
The Tu nn e l s menu page contains links to web pages that configure and display tunnel parameters and
data. To display this page, click Routing > Tunnels in the tree view. Following are the web pages
accessible from this menu page:
• Tunnels Configuration
• Tunnels Summary