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AR500, AR510, and AR530 V200R007 CLI-based Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring transparent bridge, MAC table, link aggregation, VLANs, STP/RSTP/MSTP, and so on.The document provides the configuration procedures and configuration examples to illustrate the service configuration methods and application scenario.
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Applications

Applications

Transparent bridging allows communication between different LANs. Transparent bridging can be configured in four usage scenarios depending on the geographical locations and network segments of LANs. Table 15-1 lists the four usage scenarios and selection rules.

Table 15-1  Transparent bridging usage scenarios

Scenario

Users in the Same Geographical Location and Network Segment

Users in the Same Geographical Location but Different Network Segments

Users in Different Geographical Locations but Same Network Segment

Users in Different Geographical Locations and Network Segments

Function Required

Local bridging as shown in Figure 15-9

Local bridging integrated with IP routing as shown in Figure 15-10

Remote bridging and VLAN ID transparent transmission (if communication within VLANs and isolation between VLANs are required)

Users in different locations but on the same network segment communicate with each other using remote bridging, as shown in Figure 15-11. To implement interworking in a VLAN and isolation between different VLANs, enable VLAN ID transparent transmission, as shown in Figure 15-12.

Remote bridging integrated with IP routing as shown in Figure 15-13

Interworking on the Same Network Segment

An enterprise has multiple departments located in the same office building but on different floors. As businesses develop, data communication is required between the terminals within the same department, and between some departments. Due to information security, information in some departments need to be isolated with that in the other departments. In this case, local bridging can be used. Users that require communication with each other need to be added to the same bridge group so that some departments can communicate or be isolated with other departments.

As shown in Figure 15-9, User 1 and User 2 belong to the same department, and both of them are added to VLAN 11. User 4 and User 3 belong to the different departments. User 1, User 2, and User 3 need to communicate with each other. After bridge groups are created on RouterA, departments in the same bridge group can communicate with each other and those in different bridge groups are isolated from each other.

Figure 15-9  Interworking on the same network segment

Interworking on Different Network Segment

As shown in Figure 15-10, as businesses of Enterprise A develop, data communication is required between departments of Enterprise A, and between Enterprise A and local Enterprises B.

Departments of Enterprise A belong to the LANs on the same network segment, and therefore they can be bridged to communicate with each other. Enterprise B, however, belongs to a LAN on a different network segment. Therefore, link-layer bridging cannot meet the requirement of the communication between Enterprise A and Enterprise B.

In this case, you can configure local bridging integrated with IP routing to achieve the communication between Enterprise A and Enterprise B.

Figure 15-10  Interworking on different network segments

Remote Users on the Same Network Segment

An enterprise has multiple departments in different locations. As businesses develop, data communication is required between the terminals within the same department, and between some departments. To enable the communication between departments in different locations, remote bridging can be used.

As shown in Figure 15-11, intermediate links are used to connect RouterA and RouterB, which are located in different locations. Users 1 to 4 are on the same network segment. User 3 and User 4 are in a different location than User 1 and User 2. Configuring remote bridging allows User 1 and User 2 to communicate with User 3 and User 4.

Figure 15-11  Remote users on the same network segment

Remote Users in the Same VLAN on the Same Network Segment

To allow users in the same department (the same VLAN) to communicate with each other, and to isolate users in different departments (different VLANs), VLAN ID transparent transmission must be enabled.

As shown in Figure 15-12, User 1, User 2, User 3, and User 4 are on the same network segment. User 1 and User 3 belong to a VLAN; User 2 and User 4 belong to the other VLAN. To allow users in the same VLAN to communicate with each other and isolate users in different VLANs, remote bridging and VLAN ID transparent transmission can be enabled. In this manner, User 1 can only communicate with User 3, and User 2 can only communicate with User 4.

Figure 15-12  Remote users in the same vlan on the same network segment

Remote Users on Different Network Segments

As shown in Figure 15-13, As businesses of Enterprise A develop, data communication is required between departments of Enterprise A, and between Enterprise A and remote Enterprises C (in a different geographical location).

Departments of Enterprise A belong to the LANs on the same network segment, and therefore they can be bridged to communicate with each other. Enterprise C, however, belongs to a LAN on a different network segment. Therefore, link-layer bridging cannot meet the requirement of the communication between Enterprise A and Enterprise C.

In this case, you can configure remote bridging integrated with IP routing to achieve the communication between Enterprise A and Enterprise C.

Figure 15-13  Remote users on different network segments

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Updated: 2019-05-25

Document ID: EDOC1000097279

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