MAC Acquisition Across L3 Network Unable To Gain Mac And IP Address

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Issue Description

IAM set enable with MAC acquisition across L3 network but failed to gain the mac and IP address.
IAM deployed with non-IP bridge and connect to an management port.
The connection between core switch is using manage IP.

Handling Process

  • Checked the IAM's manage IP able to ping to core switch's IP address.
  • Third party software like BPSNMPUtil unable to read the mac and IP address through oid provided by user.
  • Do a packet capture found the request from IAM to SNMP return with null.


Root Cause

This is because the IP OID and MAC OID are error.

Solution

Change the OID to the correct OID and use software test and it able to gain the IP and mac address.

Suggestions

Use these OID as below for the reference to test whether it can be work or not.
You may use the third party software to run on the PC to check for those OID able to gain the IP and Mac address.
If unable to gain kindly contact the core switch vendor for more information.
ZTE's OID value
IP:1.3.6.1.2.1.4.22.1.3,
mac 1.3.6.1.2.1.4.22.1.2
1.3.6.1.2.1.4.22.1.2

Huawei's OID value
1.3.6.1.2.1.4.22.1.2
RFC1213-MIB,ipNetToMediaPhysAddress.21.10.6.23.230,
1.3.6.1.2.1.4.22.1.2.21.10.6.23.230,String,58:6A:B1:1F:24:80

H3C's OID value
IP: 1.3.6.1.4.1.2011.2.23.1
Mac: 1.3.6.1.4.1.2011.10.2.2

Cisco's OID value
IP:1.3.6.1.2.1.4.22.1.3
Mac: 1.3.6.1.2.1.4.22.1.2
Faisal Posted 16 Aug 2020 10:33
  
Thank you very much for the information ...
Faisal Posted 28 Oct 2020 09:01
  
Nice article ...
Faisal Posted 12 Dec 2020 08:46
  
Great info ...
Ellechar Lv4Posted 03 Feb 2021 09:53
  
Very nice infooooooooooooooooooooooooooooo
Faisal Posted 14 Mar 2021 07:35
  
Very informative …
Faisal Posted 30 May 2021 10:40
  
Nice guidance ...

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Doc ID: 2419
Author: CTI TF
Updated: 2019-12-23 15:39
Version: