Unable To Obtain User MAC Address At User Binding

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Issue Description

Unable to obtain user MAC address at user binding from auto assigned based on IP address, but the MAC address can be obtained across Layer 3.

Handling Process

At present, the auto assignment of the MAC address in the user binding and the acquisition of the MAC across the layer 3 are not the same principle.
The auto assignment of MAC address of the PC is obtained by entering the IP address of the user. The IAM directly interacts with the endpoint device through the NETBIOS protocol and ARP to obtain the MAC address of the endpoint device. If the computer does not have the NETBIOS protocol enabled, or if the IAM is not in a same layer 2 environment with the endpoint device, the MAC address of the endpoint device cannot be obtained.
MAC address is obtained across Layer 3: The ARP table of the switch is obtained through the SNMP protocol, and the correspondence between IP and MAC is obtained from the ARP table on the switch.

Solution

At present, the auto assignment of the MAC address in the user binding and the acquisition of the MAC across the layer 3 are not the same principle.
The auto assignment of MAC address of the PC is obtained by entering the IP address of the user. The IAM directly interacts with the endpoint device through the NETBIOS protocol and ARP to obtain the MAC address of the endpoint device. If the computer does not have the NETBIOS protocol enabled, or if the IAM is not in a same layer 2 environment with the endpoint device, the MAC address of the endpoint device cannot be obtained.
MAC address is obtained across Layer 3: The ARP table of the switch is obtained through the SNMP protocol, and the correspondence between IP and MAC is obtained from the ARP table on the switch.
Faisal Posted 18 Aug 2020 11:31
  
Thank you very much for the information ...
Faisal Posted 25 Oct 2020 06:30
  
Nice article ...
Faisal Posted 14 Dec 2020 08:14
  
Great info ...
Ellechar Lv4Posted 29 Jan 2021 16:52
  
Very nice infoooooooooooooooooooooooooooooo
Faisal Posted 17 Mar 2021 07:25
  
Very informative …
Faisal Posted 02 Jun 2021 07:39
  
Nice guidance ...

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Doc ID: 2600
Author: CTI SC
Updated: 2019-12-23 15:11
Version: