DHCP Lease times (Short vs Long times)

Discussion in 'Mac Accessories' started by LFMNX, Apr 16, 2013.

  1. LFMNX macrumors regular

    Feb 14, 2011
    Airport Extreme - 20 device environment typical or repeating users

    I am interested in what the pros / cons are of using short vs long DHCP lease times. What are the conveniences or inconveniences or security concerns if any or performance concerns. Real world experiences.

    The default is 1 day in the airport extreme. I occasionally look at it too see a 24 hour footprint of what devices have been active.

    I really have not problem to solve other than to better understand it. I could see if you had a coffee shop with hundreds of users coming or going that you would not want to tie up hundreds of IP addresses for days so I am thinking there must be some relationship here.
  2. thewitt macrumors 68020


    Sep 13, 2011
    Long lease times tie up IP addresses.

    If you have no issue with a shortage of IP addresses, set them as long as you like.
  3. drsox macrumors 65816


    Apr 29, 2011
    Depends on your personal situation. Is your network stable ? Are there daily/hourly changes in devices being plugged in or removed ?

    I have 30+ devices that don't change from day to day with only 2 users. So I assign addresses through the AE DHCP function to about 25 of them. This helps with troubleshooting if needed and slightly improves access times. But I still haven't extended the lease time beyond 24 hours as there is no real reason to change it.

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