3Com WX4400 3CRWX440095A - Manual (Page 166)

166 C HAPTER 9: C ONFIGURING N ETWORK D OMAINS
Figure 4 Network Domain
In a Network Domain, one or more WX switches acts as a seed device. A
Network Domain seed stores information about all of the VLANs on the
Network Domain members. The Network Domain seeds share this
information among themselves, so that every seed has an identical
database. In the example above, one WX switch at each site is a Network
Domain seed.
Each Network Domain member maintains a TCP connection to one of the
seeds. When a Network Domain member needs information about a
VLAN in a remote Mobility Domain, it consults the Network Domain seed
to which it is connected. If the seed has information about the remote
VLAN, it responds with the IP address of a WX switch where the VLAN
exists. A VLAN tunnel is then created between the WX switch and the
remote WX switch.