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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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Licensing Requirements and Limitations for VCMP

Licensing Requirements and Limitations for VCMP

Involved Network Elements

Other network elements are not required.

Licensing Requirements

VCMP is a basic feature of a switch and is not under license control.

Version Requirements

Table 13-3  Products and versions supporting VCMP


Product Model

Software Version


S7703, S7706, S7712

V200R005C00, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00
S7703 PoE


S7706 PoE



S9703, S9706, S9712

V200R005C00, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00
For details about software mappings, visit Hardware Query Tool and search for the desired product model.

Feature Limitations

  • XGE interfaces connected to the ACU2, ET1D2IPS0S00, ET1D2FW00S00, ET1D2FW00S01, or ET1D2FW00S02 card do not support VCMP.

  • VCMP can only help the network administrator synchronize VLAN information but not dynamically assign interfaces to VLANs. VCMP is often used with LNP to simplify user configurations. For details about LNP, see "LNP" in "VLAN Configuration" in the Configuration Guide - Ethernet Switching of the corresponding product version.

  • VCMP packets can be only transmitted in VLAN 1. By default, all interfaces join VLAN 1. To prevent loops, deploy a loop prevention protocol such as STP in addition to VCMP.

  • By default, a switch is a VCMP client. After a switch is upgraded from a version earlier than V200R005C00 to V200R005C00 or a later version, the role of the switch is silent.

  • VCMP synchronizes only the VLAN ID in the current version.

  • One switch can join only one VCMP domain, and only one VCMP server exists in a VCMP domain.

  • If the VCMP domain authentication password is set, ensure that the VCMP server and clients use the same VCMP domain authentication password.

  • If VLANs created or deleted on the VCMP server are the control VLANs of the Ethernet Ring Protection Switch (ERPS), Rapid Ring Protection Protocol (RRPP), Smart Ethernet Protocol (SEP), or Smart link, or reserved VLANs of stack, a VCMP client does not create or delete the VLANs.

  • If the Generic VLAN Registration Protocol (GVRP) or Hierarchy VLAN Register Protocol (HVRP) has been enabled, the VCMP role can be only the transparent or silent switch. If the VCMP role is set to client or server, do not use GVRP or HVRP.

  • Termination sub-interfaces cannot be configured on a VCMP client. For details on how to configure a termination sub-interface, see "Configuring a Sub-interface" in "Logical Interface Configuration" in the Configuration Guide - Interface Management of the corresponding product version.

  • A VCMP client cannot be configured with the VLAN switch function. Before changing a VCMP server configured with the VLAN switch function to a VCMP client, delete the VLAN switch configuration.

  • After a VLAN is deleted on the VCMP server, VCMP clients delete the VLAN but do not delete configurations in the VLAN. In addition, the vlan vlan-id configuration command is generated in the configuration file, and the configurations in the deleted VLAN specified by vlan-id are moved to the VLAN configuration view.
  • When the device used as a VCMP client that connects to a VCMP server restarts, the VLAN configuration before the restart takes effect. To make the saved VLAN configuration take effect, use one of the following methods to delete the vlan.dat file and then restart the device:
    • Run the vcmp role { server | silent | transparent } command to change the device role to a non-client.
    • Run the startup saved-configuration configuration-file command to configure a new configuration file. Ensure that the name of the new configuration file is different from that of the current configuration file.
    • Run the reset saved-configuration command to clear the saved configuration file. This command will clear all the configuration.

    When the value of Server ID in the display vcmp status command output is not empty, the device used as a VCMP client has been connected to a VCMP server.

Updated: 2019-01-18

Document ID: EDOC1100038843

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