NEC WL1700-MS Installation Manual page 43

Process When a terminal roamed to another AP controlled by other WL
l
Controller in a Mobility Domain
When a terminal roams in a Mobility Domain, if the Controller cannot find any
VLAN information regarding to the roaming terminal, the Controller send a
request to the seed in the Mobility Domain to find out an appropriate Controller
containing the terminal information. Upon receiving information from the seed,
the Controller will try to make an IP tunneling to establish a connection with the
appropriate VLAN through the networks.
Mobility Domain
Controller ID VLAN
member1 PC1 10
member1 Phone1 20
member2 PC2 10
member2 Phone2 20
member3 PC3 10
member3 Phone3 20
member1
100M LINK 100M LINK 100M LINK 100M LINK
PWR ALM ACT LOAD PWR ALM ACT LOAD
Ether1 Ether2 Ether1 Ether2
HUB xxxxxx
Terminal belongs to the following:
ID: Phone1
VLAN: 20
Note.
A maximum of the WL Controllers made per Mobility Domain depends on the
seed-functioned Controller in the Mobility Domain. In the case of WL5100 and
SCA-WL10, Mobility Domain constitutes a maximum of 32 WL Controllers. In the case
of WL1700-MS, Mobility Domain constitutes a maximum of six WL Controllers
For example:
Using WL5100 or SCA-WL10 as a seed, up to 32 WL Controllers (31 WL Controllers
Network Topology with WL Controllers
ID VLAN
Controller
member1 PC1 10
member1 Phone1 20
member2 PC2 10
member2 Phone2 20
member3 PC3 10
seed
member3 Phone3 20
USB Ether 1
PWR ALM ACT LOAD
PWR1 PWR2
Ether 2
LINK/ACT SPEED
ID VLAN
Controller
member1 PC1
HUB xxxxxx
member1 Phone1 20
member2 PC2
member2 Phone2 20
member3 PC3
member3 Phone3 20
member2
PWR ALM ACT LOAD 100M LINK 100M LINK PWR ALM ACT LOAD 100M LINK 100M LINK
Ether1 Ether2 Ether1 Ether2
2
HUB xxxxxx
Roaming
OVERVIEW
Controller ID VLAN
10
member1 PC1 10
member1 Phone1 20
10
member2 PC2 10
member2 Phone2 20
10
member3 PC3 10
member3 Phone3 20
member3
PWR ALM ACT LOAD 100M LINK 100M LINK PWR ALM ACT LOAD 100M LINK 100M LINK
Ether1 Ether2 Ether1 Ether2
HUB xxxxxx
1
Chapter 1
9