General Information

MAC level bridging of Ethernet, Ethernet over IP (EoIP), Prism, Atheros and RadioLAN interfaces
are supported. All 802.11b and 802.11a client wireless interfaces (both ad-hoc and infrastructure
or station modes) do not support this because of the limitations of 802.11 - it is possible to bridge
over them using the Ethernet over IP protocol (please see documentation on EoIP).
For preventing loops in a network, you can use the Spanning Tree Protocol (STP). This protocol
also makes redundant paths possible.
Features include:
• Spanning Tree Protocol (STP)
• Multiple bridge interfaces
• Bridge associations on a per interface basis
• Protocol can be selected to be forwarded or discarded
• MAC address table can be monitored in real time
• IP address assignment for router access
• Bridge interfaces can be firewalled
Quick Setup Guide
To put interface ether1 and ether2 in a bridge.
1. Add a bridge interface, called MyBridge:
/interface bridge add name="MyBridge" disabled=no
2. Add ether1 and ether2 to MyBridge interface:
/interface bridge port set ether1,ether2 bridge=MyBridge
Specifications
Packages required: system
License required: level4
Home menu level: /interface bridge
Standards and Technologies: Media Access Control, IEEE801.1D
Hardware usage: Not significant
Related Documents
• Package Management
• IP Addresses and ARP
• EoIP
• Firewall Filters
Description
Ethernet-like networks (Ethernet, Ethernet over IP, IEEE802.11 Wireless interfaces in AP mode)
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