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AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009 CLI-based Configuration Guide - Ethernet Switching

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Remote Bridging

Remote Bridging

If LANs in different geographical locations need to communicate with each other at the link layer, remote bridging can be used to bridge the LANs.

Figure 15-6  Networking diagram for remote bridging

As shown in Figure 15-6, Router A and Router B are connected with each other over a network. PC2, PC4, PC5, and PC7 belong to four different LANs (LAN 2, LAN 1, LAN 4, LAN 3) on different network segments. LAN 1 needs to communicate with LAN 3, and LAN 2 with LAN 4.

Bridges 1 and 2 are created on Router A and Router B, respectively. Ethernet2/0/1 and Serial 1/0/0 on both Router A and Router B are added to bridge 1; Ethernet2/0/2 and Serial 1/0/1 on both Router A and Router B are added to bridge 2. In this manner, the preceding communication requirement can be met.

Other types of links, such as Ethernet, Point-to-Point Protocol (PPP), Asynchronous Transfer Mode (ATM), and High-level Data Link Control (HDLC), can also be used for remote bridging.

To support remote bridging, transparent bridging provides the following functions:

  • Allow Ethernet interfaces, Ethernet sub-interfaces, VLANIF, VT, Serial, Serial sub-interfaces, Dialer, PON interfaces, ATM interfaces, ATM sub-interfaces, FR interfaces, FR sub-interfaces, MP-Group interfaces, MFR interfaces, MFR sub-interfaces to be added to bridge groups.

  • Link encapsulation protocols such as Ethernet, PPP, HDLC, FR, PPP0A, PPPOE, PPPOEOA, and ATM.

  • 802.1Q VLAN ID transparent transmission.

  • Bridging IP and non-IP packets.

Updated: 2019-05-17

Document ID: EDOC1000174108

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