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Related Documentation
- M, MX, T Series
- Configuring Layer 2 Bridging Interfaces
- Additional Information
- Junos® OS Ethernet Interfaces
Layer 2 Bridging Interfaces Overview
Bridging operates at Layer 2 of the OSI reference model while routing operates at Layer 3. A set of logical ports configured for bridging can be said to constitute a bridging domain.
A bridging domain can be created by configuring a routing instance and specifying the instance-type as bridge.
Integrated routing and bridging (IRB) is the ability to:
- Route a packet if the destination MAC address is the MAC address of the router and the packet ethertype is IPv4, IPv6, or MPLS.
- Switch all multicast and broadcast packets within a bridging domain at layer 2.
- Route a copy of the packet if the destination MAC address is a multicast address and the ethertype is IPv4 or IPv6.
- Switch all other unicast packets at Layer 2.
- Handle supported Layer 2 control packets such as STP and LACP.
- Handle supported Layer 3 control packets such as OSPF and RIP.
Related Documentation
- M, MX, T Series
- Configuring Layer 2 Bridging Interfaces
- Additional Information
- Junos® OS Ethernet Interfaces
Published: 2013-02-13
Related Documentation
- M, MX, T Series
- Configuring Layer 2 Bridging Interfaces
- Additional Information
- Junos® OS Ethernet Interfaces
