Setting up DHCP with OLSR

There have been so many misleading postings on this - I will finally set the record straight.

You will need to reserve a block of IP's for non OLSR wireless clients that want to connect onto the mesh network such as a laptop. Here is an example setup:

Wireless router 1:
Wireless IP: 10.51.1.13
LAN IP: 10.3.13.1
Subnet for Wireless DHCP clients: 10.51.1.64/28 (This would mean that 16 machines could potentially connect to this wireless router. The IP leases will be in the range from 10.51.1.64 to 10.51.1.79)

Wireless router 2:
Wireless IP: 10.51.1.14
LAN IP: 10.3.14.1
Subnet for Wireless DHCP clients : 10.51.1.80/28 (IP leases will be in the range from 10.51.1.80 to 10.51.1.93)

To set this up On Friefunk firmware
Wireless Router 1:
OLSR:
OLSR DHCP: 10.51.1.64/28

Wireless Router 2:
OLSR:
OLSR DHCP: 10.51.1.80/28


Most people gave strange values for OLSR DHCP in their postings the most common one was:
OLSR DHCP: 10.51.1.80/28, 255.255.255.240

The subnet mask after the comma (255.255.255.240) is an alternative to the slash format /28. Why does everyone have this reduntant subnet mask on their postings???

good info on checking linksys hardware version

Finally some good info about finding the version number from outside markings and using NVRAM settings - info from www.openwrt.org

Linksys WRT54G

1. Hardware versions
   1. Identification by S/N
   1. WRT54G v1.0
   2. WRT54G v1.1
   3. WRT54G v2.0
   4. WRT54G v2.2
   5. WRT54G v3.0 & WRT54G v3.1
   6. WRT54G v4.00
2. Table summary
3. Hardware hacking

1. Hardware versions

There are currently seven versions of the WRT54G (v1.0, v1.1, v2.0, v2.2, v3.0, v3.1, v4.00). With the exception of v4.00 devices (it is currently marked as untested for White Russian RC1), the WRT54G units are supported by OpenWrt 1.0 (White Russian) and later. boot_wait is off by default on these routers, so you should turn it on. The version number is found on the label on the bottom of the front part of the case below the Linksys logo.

1.0.1. Identification by S/N

Useful for identifying shrinkwrapped units. The S/N can be found on the box, below the UPC barcode.

Please contribute to this list.		OpenWRT
Model	S/N	CVS	EXP
WRT54G v1.1	CDF20xxxxxxx
	CDF30xxxxxxx
WRT54G v2	CDF50xxxxxxx
WRT54G v2.2	CDF70xxxxxxx
WRT54G v3	CDF80xxxxxxx
WRT54G v3.1 (AU?)	CDF90xxxxxxx

1.1. WRT54G v1.0

The WRT54G v1.0 is based on the Broadcom 4710 board. It has a 125MHz CPU, 4Mb flash and 16Mb SDRAM. The wireless NIC is a mini-PCI card. The switch is an ADM6996.

1.2. WRT54G v1.1

The WRT54G v1.1 is based on the Broadcom 4710 board. It has a 125MHz CPU, 4Mb flash and 16Mb SDRAM. The wireless NIC is soldered to the board. The switch is an ADM6996.

Hardware informations (nvram) :

boardtype=bcm94710dev

1.3. WRT54G v2.0

The WRT54G v2.0 is based on the Broadcom 4712 board. It has a 200MHz CPU, 4Mb flash and 16Mb SDRAM. The wireless NIC is integrated to the board. The switch is an ADM6996.

Hardware informations (nvram) :

boardtype=0x0101
boardflags=0x0188

1.4. WRT54G v2.2

The WRT54G v2.2 is based on the Broadcom 4712 board. It has a 200MHz CPU, 4Mb flash and 16Mb DDR-SDRAM. The wireless NIC is integrated to the board. The switch is a BCM5325.

Hardware informations (nvram) :

boardtype=0x0708
boardflags=0x0118

1.5. WRT54G v3.0 & WRT54G v3.1

This unit is just like the V2.2 Except it has an extra reboot button on the left front panel behind a Cisco logo.

1.6. WRT54G v4.00

Please add information for this revision.

Hardware informations (nvram) :

boardrev=0x10
boardtype=0x0708
boardflags2=0
boardflags=0x0118
boardnum=42

To take the front cover off of this unit you must first remove the small screws under the rubber covers of the front feet!

2. Table summary

how to get info :

* board info: nvram show | grep board | sort
* cpu model: cat /proc/cpuinfo | grep cpu

Model	boardrev	boardtype	boardflags	boardflags2	boardnum	wl0_corerev	cpu model
WRT54G v1.1	-	bcm94710dev	-	-	42	5	BCM4710 V0.0
WRT54G v2.0	-	0x0101	0x0188	-	-	-	BCM3302 V0.7
WRT54G v2.2	-	0x0708	0x0118	-	-	7	-
WRT54G v3.0	0x10	0x0708	0x0118	0	42	7	BCM3302 V0.7
WRT54G v3.1 (AU?)	0x10	0x0708	0x0118	0	42	7	BCM3302 V0.7
WRT54G v4.0	0x10	0x0708	0x0118	0	42	7	BCM3302 V0.7
WRT54GS v1.0	0x10	0x0101	0x0388	0	42	7	BCM3302 V0.7
WRT54GS v1.1	0x10	0x0708	0x0318	0	42	-	-
Buffalo WBR-54G	0x10	bcm94710ap	0x0188	2	42	-	-
Toshiba WRC1000	-	bcm94710r4	-	-	100	-	-
Buffalo WBR2-G54S	0x10	0x0101	0x0188	0	00	-	-
Asus WL-500G Deluxe	0x10	bcm95365r	-	-	45	5	BCM3302 V0.7

*other variables (nvram) of interest : boot_ver, pmon_ver, firmware_version, os_version

please complete this table. Look at this thread : http://openwrt.org/forum/viewtopic.php?pid=8127#p8127 May be this table should move up to OpenWrtDocs/Hardware.

3. Hardware hacking

There are revision XH units of the WRT54G v2.0. These units have 32Mb of memory, but they are locked to 16Mb. You can unlock the remaining memory with changing some of the variables. Afterburner (aka. Speedbooster) mode can be enabled with some variables, too.

However, there are no guaranties, that these will work, and changing the memory configuration on a non-XH unit will give You a brick. Check the forums for more info.

If you have a look at the WRT54G v2.2 board, you can find on the left corner, near the power LED, an empty place for a 4 pins button. On the board it is printed as SW2. This is the second reset button you can find on WRT54G v3.0, except that it has not been soldered.