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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R012C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, HVRP, and Layer 2 protocol transparent transmission.
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Application Scenarios for HVRP

Application Scenarios for HVRP

A switch on a Layer 2 network needs to learn a large number of MAC addresses. To reduce the MAC addresses that the switch needs to learn, enable HVRP on the switch. As shown in Figure 21-3, HVRP needs to be configured on a single-ring network. In practice, HVRP applies to two types of networking.

Single-ring Network

As shown in Figure 21-3, HVRP is configured on a single-ring network.

Figure 21-3  HVRP networking 1

The single-ring network supported by HVRP has the following characteristics:
  • STP is enabled on the entire network.
  • SwitchA, SwitchB, SwitchC, SwitchD, and SwitchE are Layer 2 switches, SwitchA is the root bridge, and other devices connect to Layer 3 devices through SwitchA.
  • The link between SwitchD and SwitchE is blocked by STP.
  • User devices in Figure 21-3 refer to all downstream user devices.
  • SwitchA can be a Layer 2/3 device.

HVRP is deployed on SwitchA, SwitchB, SwitchC, SwitchD, and SwitchE. Through dynamic VLAN registration and aging mechanism, HVRP saves only necessary VLANs. When a VLAN contains one or two interfaces, MAC addresses do not need to be learned. This solves the problem when the device connects to more users and many MAC addresses need to be learned.

Multi-ring Network

As shown in Figure 21-4, HVRP is configured on a multi-ring network.

Figure 21-4  HVRP networking 2

The multi-ring network supported by HVRP has the following characteristics:
  • MSTP is enabled on the entire network. Each ring maps an MSTI, and all the devices belong to the same MST region.
  • SwitchB-1, SwitchC-1, SwitchD-1, SwitchE-1...SwitchB-n, SwitchC-n, SwitchD-n, and SwitchE-n are Layer 2 switches, SwitchA is the root bridge in all MSTIs, and other devices connect to Layer 3 devices through SwitchA. (SwitchA can be a Layer 2/3 device.)

Deploy HVRP on SwitchB-1, SwitchC-1, SwitchD-1, SwitchE-1...SwitchB-n, SwitchC-n, SwitchD-n, and SwitchE-n to solve the problem when the device connects to more users and many MAC addresses need to be learned.

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Updated: 2019-01-18

Document ID: EDOC1100038843

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