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 IPv 6 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 Tunn els 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