No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - WLAN-AC

S5700 and S6720 V200R012C00

This document describes the configurations of WLAN, including WLAN Service Configuration, Radio Resource Management, Roaming, WLAN QoS, WLAN Security, WDS, Mesh, Location, Hotspot 2.0, Dual-Link Cold Backup, N+1 Backup.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring Strict STA IP Address Learning Through DHCP

Configuring Strict STA IP Address Learning Through DHCP

Prerequisites

Before configuring strict STA IP address learning through DHCPv6, enable the IPSG or ND snooping function..

Context

When a STA associates with an AP, the following situation occurs after strict STA IP address learning through DHCP is enabled:
  • If the STA obtains an IP address through DHCP, the AP will automatically report the IP address to the AC. The STA IP address can be used to maintain the mapping entries between STA IP addresses and MAC addresses.
  • If the STA uses a static IP address, configure related parameters to control the association of the STA with the AP.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run wlan

    The WLAN view is displayed.

  3. Run vap-profile name profile-name

    The VAP profile view is displayed.

  4. undo learn-client-address ipv4 disable

    STA address learning is enabled.

    By default, STA address learning is enabled.

  5. Strict STA IP address learning through DHCP is enabled.

    If the STA uses a static IP address:
    • If blacklist enable is specified, the STA will be added to the dynamic blacklist of the AP and cannot associate with the AP before the blacklist entry ages.
    • If blacklist enable is not specified, the STA can associate with the AP and the AP does not learn the STA IP address. In this case, enable IPSG to prevent communication through bogus IP addresses.

    NOTE:
    • If strict STA IP address learning is disabled, you can manually configure static IP addresses. If a STA obtains an IP address dynamically using DHCP, goes online, and then statically modifies its IP address, the administrator cannot check the IP address change of this STA.

    • After strict STA IP address learning through DHCP is enabled, if the AC has learned the STA IP address through DHCP or statically, the STA using a bogus IP address will not be added to the blacklist. In this case, enable IPSG to prevent services from the bogus IP address from running.
    • After strict STA IP address learning is enabled, it is recommended that you run the ip source check user-bind enable and arp anti-attack check user-bind enable commands to enable IP source guard and dynamic ARP inspection so that STAs cannot communicate with the network before obtaining an IP address through DHCP.

    • A STA is added to the blacklist 2 minutes after going online.

Translation
Download
Updated: 2018-12-24

Document ID: EDOC1100038361

Views: 149521

Downloads: 427

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next