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S1720, S2700, S3700, S5700, S6700, S7700, and S9700 Series Switches Common Operation Guide

This document describes the CLI-based configurations of universal protocols and common features for Huawei switches on basic networks.
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Enabling MAC Address Triggered ARP Entry Update

Enabling MAC Address Triggered ARP Entry Update

On the Ethernet, MAC address entries are used to guide Layer 2 data forwarding. The ARP entries that define the mapping between IP addresses and MAC addresses guide communication between devices on different network segments.

The outbound interface in a MAC address entry is updated by packets, whereas the outbound interface in an ARP entry is updated after the aging time is reached. In this case, the outbound interfaces in the MAC address entry and ARP entry may be different. To address this issue, run the mac-address update arp command to enable the switch to update outbound interfaces in ARP entries when outbound interfaces in MAC address entries change.

# Enable the MAC address triggered ARP entry update function.

<HUAWEI> system-view
[HUAWEI] mac-address update arp
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Updated: 2018-09-03

Document ID: EDOC1000057410

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