Networking Requirements
Departments of Enterprise A need to communicate with other and with Enterprises C (in a
different geographical location).
Departments of Enterprise A belong to the LANs on the same network segment and can be
bridged, but Enterprise C belongs to a different network segment. As a result, link-layer bridging
cannot be used to communicate between Enterprise A and Enterprise C.
In this scenario, local bridging integrated with IP routing offers a viable solution.
As shown in Figure 9-21, bridge groups are configured on local bridging, and interfaces are
added to different bridge groups. After Bridge-if interfaces are created and assigned IP addresses,
and the IP routing function is enabled, the two hosts of Enterprise A can communicate with the
hosts of Enterprises C.
Figure 9-21 Networking diagram of remote bridging integrated with IP routing
RouterA
Eth3/0/0
Bridge-if
Eth2/0/1
RouterB
Eth3/0/0
User 4User 1 User 2
10.1.1.1/24 10.1.1.2/24 10.1.2.4/24
Network
Eth2/0/2
Eth2/0/0
Enterprise A Enterprise C
Configuration Roadmap
The configuration roadmap is as follows:
1. Configure bridge groups on RouterA and RouterB.
2. Add Ethernet 2/0/1 and Ethernet 2/0/2 on Router A to a bridge group so that the two hosts
of Enterprise A can communicate with each other.
3. Add Ethernet3/0/0 to another bridge group on Router A, and add Ethernet 3/0/0 to the bridge
group on Router B.
4. Create Bridge-if interfaces and enable the IP routing function for the bridge groups on
Router A and Router B. This allows Enterprise A and Enterprise C to communicate with
each other.
Configuration Procedure
l Configure the IP routing function.
1. Configure RouterA.
# Create bridge group 1 and bridge group, then enable the IP routing function for the
bridge groups.
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
9 Transparent Bridging Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
388
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