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Configuration Guide - IP Service
S1720, S2700, S5700, and S6720 V200R011C10

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DHCP policy VLAN, DNS, mDNS gateway, mDNS relay, UDP Helper, IP performance optimization, IPv6, DHCPv6, IPv6 DNS, IPv6 over IPv4 tunnel, and IPv4 over IPv6 tunnel.

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Disabling the IP Packet Checking Function

Disabling the IP Packet Checking Function


When the link type of an interface is QinQ or the VLAN mapping or VLAN stacking function is configured on the interface, the system checks IP packets so that the switch cannot transparently transmit IP error packets. In addition, during Layer 2 forwarding, devices cannot transparently transmit packets with the same source and destination IP addresses. To enable the switch to transparently transmit IP error packets, you can disable the IP packet checking function.

  • Only the S1720GFR, S1720GW, S1720GWR, S1720GW-E, S1720GWR-E, S2720EI, S2750EI, S5710-X-LI, S5700S-LI, S5700LI, S5720LI, S5720S-LI, S5720SI, and S5720S-SI support this function.

  • When the IP packet checking function is disabled, the IP subnet-based VLAN assignment, policy-based VLAN assignment, and IPv6 over IPv4 tunnel functions do not take effect. Therefore, confirm your action before disabling this function.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run ip error-packet-check disable

    The IP packet checking function is disabled.

    By default, the IP packet checking function is enabled.

Updated: 2020-02-26

Document ID: EDOC1000178170

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