2 Replies Latest reply on May 29, 2015 7:15 AM by evanh

    Express ARP Cache limits per vlan

    drjarmon New Member

      Adtran 1544 Gen 2 Spec sheet has ARP Entries listed 512 per interface / 1000 Total.  Would less than 512 active IP addresses per VLAN be a recommended best practice?

       

      Thanks for Insight.

      Don

        • Re: Express ARP Cache limits per vlan
          racolvin Employee

          Don:

           

          It depends on the nature of your network and the IP subnetting scheme you're using.

           

          512 ARP entries for a VLAN would imply that you were setting up an IP subnet that is /23, which would give you 512 host addresses. That's not something I would normally recommend unless there were very specific circumstances that required that large of a broadcast domain.

           

          Most customers use a standard /24 or even smaller subnets, so the ARP cache limit of 512 isn't an issue.

           

          Regards,

          Ronnie Colvin

          Adtran Applications Engineering

          • Re: Express ARP Cache limits per vlan
            evanh Employee

            Don,

             

            I am marking this assumed answered. However, if you have more to add please do not hesitate to do so.

             

            Thanks,

            Evan