[afnog] Difference between mac address on interface and mac address in the arp table

Christian M chrismuhirwa at hotmail.com
Wed Mar 18 15:56:13 UTC 2015


It's a physical interface. but as you saw on the ARP table I sent earlier, the same MAC address appears also on other L3 physical interface. Is this normal or the should pick up the MAC address on the interface?

Subject: Re: [afnog] Difference between mac address on interface and mac address in the arp table
To: chrismuhirwa at hotmail.com; afnog at afnog.org
From: mark.tinka at seacom.mu
Date: Wed, 18 Mar 2015 17:50:26 +0200


  
    
  
  
    

    

    On 18/Mar/15 17:35, Christian M wrote:

    
    
      
      
      There are 6 SVI and 12 L3 interfaces and they are
        share the same MAC address (0024.97d2.bf00)

      
    
    

    That's fine. SVI's in Cisco switches having the same MAC address is
    normal. It is taken from VLAN 1.

    

    For the link facing the 4500 switch, that IP address is on the
    physical interface, not an SVI, yes?

    

    Mark.
 		 	   		  
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