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CLI-based Configuration Guide - Security

AR500, AR510, and AR530 V200R007

This document describes the configurations of Security, including AAA, DAA,NAC, BRAS Access, ACL, Firewall, Deep Security Defense, Local Attack Defense;Attack Defense, Traffic Suppression, ARP Security, Port Security, DHCP Snooping, IPSG, URPF, PKI, SSL, HTTPS, Keychain, separating the management plane from the service plane, security risks.
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An Authorized Host Cannot Go Online Due to the Incorrect Static Binding Entry

An Authorized Host Cannot Go Online Due to the Incorrect Static Binding Entry

Fault Description

A static binding entry has been created for the host and IPSG has been enabled; however, the authorized host cannot go online.

Procedure

  1. Check whether the binding entry is correct.

    Run the display dhcp static user-bind { { interface interface-type interface-number | ip-address ip-address | mac-address mac-address | vlan vlan-id } * | all } command to view static binding entries.

    The binding entries may be incorrect, so the authorized host cannot go online.

    • If the binding entry of the host is not in the binding table, add the host's binding entry to the binding table. The router allows the packets from a host to pass only when the host's binding entry exists in the binding table.

    • If the host's entry exists in the binding table, check whether the MAC address in the entry is the same as the host's MAC address. If the network card of the host is replaced, the MAC address in the entry may not be updated in a timely manner. If so, delete the entry and configure a new binding entry for the host.

    • If the host's binding entry exists in the binding table, check whether the entry contains VLAN information. If so, run the display vlan command to check whether the interface connected to the host has been added to the VLAN. The router allows the packets from a host to pass only when the interface connected to this host has been added to the VLAN.

  2. Add a binding entry.

    Run the user-bind static { { ip-address | ipv6-address } { start-ip [ to end-ip ] } &<1-10> | mac-address mac-address } * [ interface interface-type interface-number ] [ vlan vlan-id [ ce-vlan ce-vlan-id ] ] command.

  3. Delete a binding entry.

    Run the undo user-bind static [ interface interface-type interface-number | { ip-address | ipv6-address } { start-ip [ to end-ip ] } &<1-10> | mac-address mac-address | vlan vlan-id [ ce-vlan ce-vlan-id ] ] * command.

    NOTE:

    The AR500 series (except AR502G-L-D-H, AR502GR-L-D-H, ) do not support the keywords ipv6-address and ce-vlan.

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Updated: 2019-05-25

Document ID: EDOC1000097287

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