[Brewder]

Hello,

I'm looking to re-setup my network but don't want to type in all of the MAC/dns names/IP's for each of my devices that have an existing static DHCP address.

Where is the conf file stored so I can copy/paste/replace after I re-do everything?

I found hosts but it doesn't include the MAC address reservations for DHCP.

//Brew

[artyddwrt]

[artyddwrt]

I had to use single quotes for the command to work for me.

http://www.dd-wrt.com/wiki/index.php/Static_DHCP

[Brewder]

[artyddwrt]

.
They show up in the GUI the way I do it. I'll see about posting the commands in a day or so.
.

[Brewder]

[artyddwrt]

The settings I am using are as follows:

Setup > Basic Setup - Network Address Server Settings (DHCP)
- DHCP Type: DHCP Server
- DHCP Server: Enable
- Use DNSMasq for DHCP: checked
- Use DNSMasq for DNS: checked
- DHCP-Authoritative: checked
- Recursive DNS Resolving: checked
- Forced DNS Redirection: checked

Setup > Services - DHCP Client
- all blank settings here

Setup > Services - DHCP Server
- all blank settings here except for "Used Domain" (set to "LAN & WAN")

Setup > Services - Static Leases
- the static lease details auto populate here in the web GUI for me, reflective of what I enter as last static lease command (see further down)

Setup > Services - DNSMasq
- DNSMasq: Enable
- Local DNS: Enable
- No DNS Rebind: Enable
- Query DNS in Strict Order: Enable
- Add Requestor MAC to DNS Query: Enable



<<<Static Lease Command>>
Administration > Commands - Command Shell, Commands

- below is the format for the command that works for me. I cut and paste it into the command box and then hit the "Run Commands" button, and then after its done those static lease details are respectively reflected in the static lease area of the GUI (as described above). All the static leases I define in one single long chain of device definitions with no line breaks (ignore the line breaks shown below), with a single space between each device definition (after the lease minutes for one device and before the MAC address for the next device), and with a single set of quotes encasing the entire device chain definition:

nvram set static_leasenum=X nvram set static_leases='aa:bb:cc:dd:ee:ff=hostname1=ppp.qqq.rrr.sss=mm aa:bb:cc:dd:ee:ff=hostname2=ppp.qqq.rrr.sss=mm aa:bb:cc:dd:ee:ff=hostname3=ppp.qqq.rrr.sss=mm .............. aa:bb:cc:dd:ee:ff=hostnameLast=ppp.qqq.rrr.sss=mm'

---where:
- X is the number of static leases being defined within the command chain;
- device MAC addresses are defined by aa thru ff;
- hostname is self explanatory, but I try to remain consistent with how the device advertises itself;
- desired device static IP addresses are defined by ppp thru sss; and
- desired lease time (in minutes) is defined by mm

All of that I got from the earlier wiki location I provided. I don't remember why I realized I had to use single quotes (I believe the wiki says use standard double quotes). I think I read it somewhere else in the forums.



I am not actually convinced I have DHCP setup correctly between using the standard DHCP service and DNSMasq. Based on the wiki, it seems I might be using standard DHCP command format not DNSMasq format. Regardless, it seems to be working for me and gives me the result I was looking for (auto populating the static lease details GUI table based on the command chain I enter, and then those also being used for the actual static assignments and showing-up in the active clients list, etc...).

I can post the excel file later if you want. It is not rocket science but does allow me to easily work with and define individual device host names, subnets, MAC addresses and IP addresses, and then concatenates all of those together to form the single device definition command (instead of having to re-create it each time I want to add a device or change a static IP assignment).

[Brewder]

[zakaron]

I did mine a bit differently - not saying one way is any more correct, just want to give alternatives.

I chose to use DNSMasq for DHCP, so my static DHCP entries are not done in the "static leases" section under the Services tab, but rather in the "additional DNSMasq options" text box (under Services tab also). You will have to format your external list to the following, but it can be copy & pasted into this text box. The format is:

# hostname
dhcp-host=<mac address>,<ip>,<lease time>

Mac address is formatted as xx:xx:xx:xx:xx:xx
IP is obviously your local IP you want to assign that device.
Lease time can be in different formats such as:
8h (for 8 hours), 7d (for 7 days), 240m (for 240 minutes). It is flexible.
The # hostname is merely a comment - I use this to remind me of what host I've assigned to what IP.

[Brewder]

Yahtzee! Running from the command box worked... HOWERVER, I also noticed I needed to use a single quote ' instead of a double " quote.... so THAT may have been the reason it didn't work properly from PuTTY.

//Brew

[artyddwrt]

[zakaron]

Yes, I do have DHCP disabled under Setup --> Basic Setup. The only boxes I have checked are:
"Use DNSMasq for DHCP" and "Use DNSMasq for DNS"
I did this because I already have a DHCP server on a Solaris machine that takes care of LAN requests. Only way I could figure out how to not include the LAN network was to disable DHCP on the Basic Setup tab. I was then free to use DNSMasq for DHCP service on my wireless networks (I have a private WLAN and guest WLAN each under different address ranges).

If we look under Setup --> Networking tab, I have a bridge interface configured for the 2.4 & 5Ghz radios for private WLAN (br1) and another brdge for the guest WLAN. This is where I define the IP segment for each bridge, then in the bottom under "Multiple DHCP Server", I define the DHCP properties for each bridge.

Now if we go to Services tab, I do have "Use JFFS2 for client lease DB" checked, "used domain" is LAN & WLAN, and LAN domain is filled in with my local domain name. Nothing is in the "Additional DHCP options" box. Under the DNSMasq heading, I have DNSMasq enabled, Local DNS enabled, No DNS rebind enabled. The strict order and MAC to DNS query are both disabled. I then have a few options in the text box for "Additional DNSMasq options", including my static DHCP leases for the wireless devices I want assigned to a static address on the private WLAN.

In short, using DNSMasq, I am able to use DHCP services for 2 of the 3 networks I have and can statically set addresses on them.

Network segments:
LAN - no DHCP provided by DD-WRT

Private WLAN - DHCP provided by DNSMasq with static leases configured in "Additional DNSMasq options"

Guest WLAN - DHCP provided by DNSMasq

All 3 of these networks are controlled tightly by IPtables rules so that I only allow certainly access between them.

[vvume]

Sorry to resurrect a thread that is more than a year old, but I would love to use this dhcp-host approach given that I have 70+ reservations, but it didn't work for me. Can you clarify the settings I would need to set on the Setup/Services pages for a regular router (single device for both router/dhcp) setup instead of the alternate DHCP setup that you had?

[WENED]

I have 99 static reserves which I load using putty and Telnet. The file I use is contained on a USB stick which I originally created from within Telnet but am able to edit it offline if I wish.

Although I do not have 99 devices, I have assigned MAC addresses of 0's with a spare description to many of the addresses. In this way I have my various devices categorized to specific address sequences, ie. Routers to 1 through 10, computers 11 through 20, etc.

I do enter the static count though GUI command but because the actual static list exceeds 255 it is necessary to input the list as a file using the SH FILE.EX command in Telnet. Just remember the original file must be created within the Telnet interface as Telnet will not recognize a file created by notepad. Ironically once the file is created, it can be edited by notepad and will still work within the telnet interface.
I set this up two years ago and don't remember the Telenet program I used to create the file but it is a common text editor and information is widely available.
As indicate in some of the prior posts you may experience some difficulty with format, single vs double quotes, I use double and it works fine for me on my WRT's

Hope this solves your problem as it did for me.

[cgigate]