Bridge Interface Types And Supported Configurations; Figure 39: Bridge Group With Fast Ethernet And Gigabit Ethernet Bridge; Table 20: Sample Bridge Group Forwarding Table - Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual

Figure 39: Bridge Group with Fast Ethernet and Gigabit Ethernet Bridge Interfaces
In Figure 39 on page 419, a bridge group named westford01 is configured on the E
Series router, which allows the router to function as a transparent bridge between a
Fast Ethernet LAN segment and a Gigabit Ethernet LAN segment. The bridge group
includes two bridge interfaces. The bridge interface associated with port 1 is stacked
on a VLAN subinterface over a Fast Ethernet interface. The bridge interface associated
with port 2 is stacked on a VLAN subinterface over a Gigabit Ethernet interface.
Table 20 on page 419 presents a simple representation of the forwarding table for
bridge group westford01.

Table 20: Sample Bridge Group Forwarding Table

Bridge Interface Types and Supported Configurations

A bridge interface can be configured as one of the following types:
You can configure bridge interfaces to add transparent bridging capabilities to your
existing network configurations. Currently, bridge interfaces can be stacked on:
Port Source Address
1 Node A
1 Node B
2 Node C
2 Node D
Subscriber (client) A subscriber (client) bridge interface is downstream from the
traffic flow; that is, the traffic flow direction is from the server (trunk) to the
client (subscriber). This is the default bridge group interface type.
Trunk (server) A trunk (server) bridge interface is upstream from the traffic
flow; that is, the traffic flow direction is from the client (subscriber) to the server
(trunk). To configure a trunk bridge group interface, you must specify the
subscriber-trunk keyword as part of the bridge-group command.
Bridged Ethernet over ATM 1483 subinterfaces
Fast Ethernet interfaces
Chapter 13: Configuring Transparent Bridging
Interface
Fast Ethernet 2/1.1
Fast Ethernet 2/1.1
Gigabit Ethernet 4/0.1
Gigabit Ethernet 4/0.1
419
Overview