System information

 Layer 3 Tunnel

Working Principles of Basic Functions

Layer 3 Tunnel

 Layer 3 (L3) Tunnel, also called IP-IP tunnel, is supported by D-Link Unified

Solution to build a bridge between switch and APs regardless the number of

L3 network subnets they pass through.



Within this tunnel, the mobile stations can maintain the same IP connections

while roaming from one AP to another AP even when these APs are attached

to different IP subnets.

 This feature is especially useful for environments that use wireless Voice

over IP (VoIP) on the 802 11 networks with multiple subnets

over IP (VoIP) on the 802

11 networks with multiple subnets

172.17.5.0/24

172.17.6.0/24

AP1

Tunnel subnet

192.168.20.0/24

Tunnel bridge

AP1

Tunnel bridge

Always get IP

address in

192.168.20.0/24,

ega

ess

whi

h i

Tunnel bridge Tunnel bridge

AP2

ega d ess c s

the connected AP

192.168.5.0/24 192.168.6.0/24