Allied Telesis AT-WL2411 - Manual (Page 94)

Configuring the Spanning Tree
94
Originating IP
Tunnels
The creation of tunnels between the root access point on the home IP
subnet and access points on remote IP subnets is controlled by three
operational parameters:
❑ Enabled/disabled IP ports. A tunnel can never be established on a
disabled IP port.
❑ IP address list
❑ Secondary LAN bridge priority settings
An IP tunnel is established when an access point on a remote IP subnet
attaches to the root access point through its IP tunnel port. The number
of IP tunnels the root access point can originate is practically unlimited.
However, the IP address list can presently contain eight entries. The size
of the address list effectively limits the number of tunnels that can be
created if unicast and directed broadcast IP addresses are used;
however, you can use a single IP multicast address to originate a
practically unlimited number of tunnels.
The IP address list can contain any combination of IP unicast, IP
broadcast, or IP multicast addresses. Only one IP tunnel can be created
for each IP unicast address in the list. A single IP multicast address can be
used to create a practically unlimited number of tunnels to multiple
remote IP subnets. A single IP directed broadcast address can be used to
create a practically unlimited number of tunnels to a single remote IP
subnet. (An IP directed broadcast address is typically used to specify all
hosts on a single remote subnet.)
A remote IP subnet functions much like a wireless secondary LAN with
these exceptions:
❑ Any access point can provide a wireless link to another access
point. Only the root access point can originate an IP tunnel.
❑ A wireless link can provide a transparent bridge for both wired
and wireless devices on a wireless secondary LAN. An IP tunnel
only provides a transparent bridge for end devices (unless
explicitly configured to provide connectivity for an NNL gateway
on a remote IP subnet).