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cin_ 08-16-2012 03:07 PM

IP Leasing Questions
I have been placed in charge of a hotel's wireless network, and I have some questions about IP leasing due the fact that this is a hotel I am dealing with, where new machines are constantly moving through...

When the IP Gateway's DHCP allocates an IP to a specific machine how does it reference that machine? MAC Address? Else?

If the lease is for 3 days and on the first day after the IP is allocated to the machine if the machine goes off the network, say out for the day, can another machine be allocated that IP while it is out of use if it is still within the time frame of the lease?

If I set the lease time for one hour would this cause disruptive performance?
Say someone is downloading a large file, or on an international call for longer than the lease time, does the renewal or rebinding processes drop the connection?

... previous thread on this network...

jefro 08-16-2012 04:34 PM

Changing lease to a lower time tends to affect people with secure connections. Might only create a delay in some other things or not noticed at all. I might be more tempted to go to a 24 hour lease before I went to an hour.

In a round about way mac in involved but that is more a result of tcp/ip rules. You would have to have a mac address in a normal ethernet type connection. Mac and lease then will follow rules.

cin_ 08-19-2012 06:19 PM

Yup, Blocks It
So the lease is binding. I got confirmation from the stacks:

Meaning, in my situation with the hotel, I would need to lessen the lease times in order for my wifi to remain usable over long periods of time.
The biggest problem is the phones. Those are eating up IPs and the guests may be unaware it's even using the wifi.

scheidel21 08-22-2012 02:52 AM

Can your AP's support multiple SSIDs and VLANs, I would put the phones on their own VLAN if possible.

jefro 08-22-2012 10:54 AM

The normal text boot answer is to either increase the lease pool or reduce lease times.

cin_ 08-23-2012 01:16 PM

scheidel21, yes the access points allow for multiple SSIDs, .

jefro, I did do both of those things. Now everything is going swimmingly.

scheidel21 08-23-2012 04:26 PM

Well glad you got everything working! I would still suggest a separate LAN for phones just to reduce traffic, it is a best practice. But like I said I am glad you got everything working.

cin_ 08-25-2012 02:59 AM

Yeah, the phones are Voice Over IP on a seperate DSL line.

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