jbob
Reach Out and Touch Someone
Premium
join:2004-04-26
Little Rock, AR
 ·Comcast
 ·AT&T Southwest
|  [general] DHCP Remaining time for Linksys Routers
Looking for a survey of anyones routers and what their default DHCP remaining time starts at. This is in response to the newest firmware (1.45.11) for the BEFSR41 and it's problems. Doesn't have to be SR41 routers. I reflashed my SR41 and got a 4 day lease time. Others have had different lease times displayed. Let's hear what others are experiencing. I would try my SX41 but it is disconnected now while checking out my SR41.
I'd like to know why there are different lease times! |
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Otto7
join:2002-04-23
Memphis, TN
| It seems that you don't really understand what DHCP does.
DHCP stands for Dynamic Host Configuration Protocol. Essentially, it's a way for a network to give the users on that network an IP address dynamically. When the computer or device starts up, it sends out a DHCP request to the network. Some device on that network, called a DHCP Server, sees it and replies back with an IP address and other configuration information. This is how you get an IP.
The Lease Time is sent along with that. In other words, you would expect it to be different for everybody because it's your provider's DHCP server that's setting that value. Essentially, you're getting an IP from their DHCP server and it says "I'm leasing this IP to you for XX hours, and I won't give it to anybody else in that time period". After the lease expires, the DHCP can give your IP to anybody else who asks for one. Not that it will, necessarily, just that it can. Unless you renew that lease and get a new expire time, that IP can become not yours anymore.
That's what the lease time means. It's going to be different for different ISP's and that's all there is to it, really. |
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prestonlewis
Premium,MVM
join:2003-04-13
Sacramento, CA
 ·VoiceStick
| reply to jbob
Re: [general] DHCP Remaining time for Linksys Rout
I am using a new Linksys WRT54GS. Using "9999" in the lease time box in the setup page gives me 1 week per device. I do wish Linksys would let you choose a "forever" lease. I have an FTP server I use for work located at home. I have it set to use a static address of 192.168.1.99 (DHCP begins at 100) and it works fine, just in case anyone wants to use a non-lease address. |
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jbob
Reach Out and Touch Someone
Premium
join:2004-04-26
Little Rock, AR | reply to Otto7
Re: [general] DHCP Remaining time for Linksys Routers
Thanks Otto. That clears up that issue and I do know what DHCP stands for and thought something along those lines for the leases. Of course that still leaves the issue why so many are having trouble getting new leases automatically. |
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Comp Cmndo
join:2003-08-12
FL-USA
1 edit | said by jbob  :
Thanks Otto. That clears up that issue and I do know what DHCP stands for and thought something along those lines for the leases. Of course that still leaves the issue why so many are having trouble getting new leases automatically.
BEFSR41 ver1, upgrade to 1.45.11 causes DHCP lease on WAN side to expire in short period of time (ISP dependent) and is never renewed. Even lease at 0hrs0min0sec, connectivity is maintained for some period of time (it varies with ISP). Downgrade to 1.45.6 and all is back to normal. |
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Otto7
join:2002-04-23
Memphis, TN
| Well, my lease expired again sometime yesterday, but since I'm static I let it be. Now, I just checked, and it DID renew about 3 hours ago. I'm not entirely certain what's going on, but near as I can figure it, it renewed 24 hours *after* my lease expired. My lease showed up as 24 hours, BTW. Always has shown up that way on the router.
I may hook up the PC directly later tommorrow and see what I can figure out. I think my ISP actually might be giving me a 48 hour lease. This could explain a few things. |
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