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OSN 9800 V100 Configuration Guide 03

This document introduces service configuration process for OSN 9800.
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Split Horizon Group

Split Horizon Group

A split horizon group consists of some specified ports. The ports in one split horizon group cannot forward packets to each other.

To better isolate E-LAN services and to prevent a broadcast storm resulting from a service loop, you can configure a split horizon group for the E-LAN services at the specified nodes.

Figure 3-9 shows a typical application of the split horizon group. NEs on the network are configured with E-LAN services, and the NNI ports and service access ports are configured as mounted ports of a bridge. In this case, if a split horizon group is configured at NE1 and the NNI ports are configured as members of the split horizon group, the east and west NNI ports do not forward packets to each other. Therefore, a service loop is prevented.

Figure 3-9 Service model that applies a split horizon group

Updated: 2019-09-05

Document ID: EDOC1100033663

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