help needed: 350Bridge!

[zhichao]

Hi

We have three building networks (A,B and C). They are very far. The customer needs to use wireless bridges to link them up.

They bought four 350Bridges. One 350 is placed inside each building, and the fourth one is at the central.

The networks at at A,B and C will be linked up by this fourth one at central. This fourth one has no Ethernet connection, so it will be just functioning as a wireless hub.

In this setup, where shall we put the root bridge? Can this fouth bridge (without Ethernet) run as root, and the three building bridges run as non-root?

Thanks

[ebreniz]

Non-Root Bridge w/o ClientsUse this setting for non-root bridges that should not accept associations from client devices. A non-root bridge (without clients) can connect to a wired LAN and only associates to another bridge (root or non-root).

Root Access PointUse this setting to set up the bridge as a rugged access point connected to the wired LAN. A root access point only accepts associations from non-root access points and client devices. A root access point cannot associate with another root access point or root bridge. When you select Root Access Point, the bridge's Spanning-Tree Protocol (STP) function is disabled.

Repeater Access PointUse this setting to set up the bridge as a rugged repeater access point. A repeater access point is not connected to the wired LAN; it is placed within radio range of an access point connected to the wired LAN to extend the range of your infrastructure or to overcome an obstacle that blocks radio communication. A repeater access point can associate to other access points (root or repeater) and bridges (root and non-root with clients). It will accept associations from other repeater access points and client devices. When you select Repeater Access Point, the bridge's STP function is disabled.

http://cisco.com/en/US/products/hw/wireless/ps458/products_installation_guide_chapter09186a008007f75c.html