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AES-100 User’s Guide
Bridge Configuration 6-1
Chapter 6
Bridge Configuration
The bridge subsystem allows you to configure and monitor the bridging and port-based VLAN functions
of the AES-100.
The AES-100 supports IEEE 802.1d transparent bridging; but not the static filtering feature or spanning tree
protocol. The bridge learns the source MAC addresses of sender hosts by inspecting incoming Ethernet frames and
recording the learned MAC addresses with their incoming port numbers into its filtering database. Based on the
database, the bridge forwards each incoming frame to its destination port.
6.1 Bridge Port Numbers
The bridge subsystem of the AES-100 defines its own numbering convention for ports. The bridge has a total of
nine ports; bridge port 1 stands for Ethernet port, bridge port 2 stands for ADSL port 1, bridge port 3 stands for
ADSL port 2, and so on. Be sure you have clarified the relation between bridge ports and ADSL ports.
6.2 Port-Based VLAN
The VLAN (Virtual LAN) mechanism can be used to limit the broadcast domain to the members of a VLAN
group only. Users of one group are not allowed to access the resources of other groups and a higher level of
security is achieved.
The AES-100 supports port-based VLAN, one type of VLAN implementation. Port-based VLAN requires each
incoming port to define its allowed outgoing ports. Ethernet frames are forwarded according to these rules.
6.2.1 Default Settings of Port-Based VLAN
The factory default settings for the port-based VLAN of the AES-100 are:
- Bridge port 1 (Ethernet port) allowed to all bridge ports
- Bridge port 2 (ADSL port 1) allowed to bridge port 1 (Ethernet port) only
- Bridge port 3 (ADSL port 2) allowed to bridge port 1 (Ethernet port) only
- Bridge port 4 (ADSL port 3) allowed to bridge port 1 (Ethernet port) only
- Bridge port 5 (ADSL port 4) allowed to bridge port 1 (Ethernet port) only
- Bridge port 6 (ADSL port 5) allowed to bridge port 1 (Ethernet port) only
- Bridge port 7 (ADSL port 6) allowed to bridge port 1 (Ethernet port) only
- Bridge port 8 (ADSL port 7) allowed to bridge port 1 (Ethernet port) only