User's Manual

Configuring Bridging Services
Installation and User Guide: Airgo Access Point 107
learned at each interface (port) of the bridge. The bridge configuration is automatic and requires no
user configuration.
Figure 71: Bridge Configuration - Bridge & STP
Each bridge name is composed of a prefix, br, together with a bridge number. When the VLAN
feature is enabled, the VLAN ID is used as the bridge number. The following IDs are reserved:
• br1 represents VLAN 1 and is the default bridge for forwarding user data traffic.
• br4094 represents VLAN 4094, which is an internal VLAN assigned to the default bridge
used for the spanning tree protocol (see the next section).
The Bridge Table lists each bridge and its associated interfaces (or ports). The Bridge Forwarding
Table, located at the bottom of the panel, lists each bridge and interface and specifies which MAC
addresses are learned at the interface.
Spanning Tree Protocol
The Bridge & STP tab also provides an option for enabling or disabling spanning tree protocol
(STP). STP is a protocol that prevents bridging loops from forming due to incorrectly configured
networks. STP provides protection against looping, but it does increase network overhead. Before
STP allows traffic through a specific port, there may be a time lapse of 30 seconds. Operations may
also take longer than normal.