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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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Configuring a VBST Convergence Mode

Configuring a VBST Convergence Mode

Context

When the topology of an MSTI changes, the forwarding path of the VLAN mapping the MSTI also changes. The MAC address entries and ARP entries relevant to the VLAN need to be updated. VBST provides the following convergence modes:

  • fast: The system directly deletes ARP entries to be updated.

  • normal: The system rapidly ages ARP entries to be updated.

In fast or normal mode, the system directly deletes MAC addresses.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run stp converge { fast | normal }

    A convergence mode is configured.

    By default, the VBST convergence mode of a port is normal.

    NOTE:

    normal is recommended. If fast is used, frequently deleting ARP entries may result in 100% CPU usage of the MPU and LPU. As a result, packets are not processed in a timely manner and network flapping occurs.

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Updated: 2019-01-18

Document ID: EDOC1100038843

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