Linksys WRT54G v5.0

Default SSID: linksys (53 addl. devices)
Default IP address: 192.168.1.1
the IP 192.168.1.1 is used by 1324 additional devices
of which 155 are Linksys devices
Default login user: blank
Default login password: admin
blank:admin credentials used by 278 additional devices
of which 135 are Linksys devices

Default Channel(s)

Manuf/OEM/ODM

CyberTAN

3rd Party Firmware Support

DD-WRT • (List)

Retail

Availability

common

FCC approval date

27 July 2005

Country of manuf

China

Physical

Dimensions

7.32" x 1.89" x 6.06"

Radio 1

Chip1

Broadcom BCM5352E

Chip2

Broadcom BCM2050

Wireless interface OUI

00:14:BF, 00:16:B6

Antenna Connector Type

RP-TNC

Wireless Standard

IEEE 802.11b/g

802.11g

up to 54 Mbps

802.11b

up to 11 Mbps

WiFi Operating Frequency

2.4 GHz

Radio cor_rev

Radio Capabilities

ap sta wet led wme 802.11d 802.11h rm cqa mbss4 afterburner acktiming

	FCC ID
Linksys WRT54G v5.1	Q87-WRT54GV5
Linksys WRT54G v5.2	Q87-WRT54GV5

	CPU1 brand	Radio1 chip1 brand	Radio1 chip2 brand
Linksys WRT54G v1.0	Broadcom	Broadcom	Broadcom
Linksys WRT54G v1.1	Broadcom	Broadcom	Broadcom
Linksys WRT54G v2.0	Broadcom	Broadcom	Broadcom
Linksys WRT54G v2.2	Broadcom	Broadcom	Broadcom
Linksys WRT54G v3.0	Broadcom	Broadcom	Broadcom
Linksys WRT54G v3.1	Broadcom	Broadcom	Broadcom
Linksys WRT54G v4	Broadcom	Broadcom	Broadcom
Linksys WRT54G v5.0	Broadcom	Broadcom	Broadcom
Linksys WRT54G v5.1	Broadcom	Broadcom	Broadcom
Linksys WRT54G v5.2	Broadcom	Broadcom	Broadcom
Linksys WRT54G v6.0	Broadcom	Broadcom	Broadcom
Linksys WRT54G v7.0	Atheros	Atheros
Linksys WRT54G v7.2	Broadcom	Broadcom
Linksys WRT54G v8.0	Broadcom	Broadcom
Linksys WRT54G v8.1	Broadcom	Broadcom
Linksys WRT54G v8.2	Broadcom	Broadcom
Linksys WRT54G-TM	Broadcom	Broadcom	Broadcom
Linksys WRT54GH	Ralink	Ralink
Linksys WRT54GP2	Marvell	Marvell	Marvell
Linksys WRT54GP2A-AT	Intel XScale	Inprocomm	RFMD

For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

For a list of all currently documented Linksys device with specifications, see Linksys.

• 54 Mbps - 2.4GHz 802.11g = G54 class

Overview

The stock firmware on these devices contains VxWorks, not Linux.

See the flashing section for instructions on flashing the units with DD-WRT.

"3763-14140404R" is silkscreened on the board.

OD/ID measurements may not be exact

Links of Interest

Flashing

NOTE: During configuration or flashing a device, the only things that should be hooked to the device is the computer and power.

Flashing DD-WRT

On the DD-WRT Wiki

WARNING: Requires Micro for DD-WRT, Do not flash anything else!

WARNING: Requires K2.4 for DD-WRT, Do not flash anything else!

IN SPITE OF SOME OTHER INSTRUCTIONS ELSEWHERE, YOU REALLY NEED TO CREATE A CUSTOM VX Image for your router. If you don’t you will get a generic MAC address on your router and a generic MAC address will mean most ISP won’t let you connect to the Internet. Here is how to do it properly:

Download the zipped files in GV5Flash.zip

Or you can download the same file from me here: Gv5Flash.zip

Read the peacock announcement found here: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=51486
Do a Hard reset or 30/30/30 on the router according to note 1 of the peacock announcement (30/30/30)
Set a static IP on your computer to 192.168.1.7. Subnet mask should be 255.255.255.0.
Connect the LAN cable from your computer to a LAN port of your router. Make sure your router is plugged in. Nothing should be connected to your computer or the router except the LAN cable between them. Turn your firewall and any wireless computer connections OFF.
Unzip the file you downloaded and place it in a location you can easily find on your computer.
Unzip the VXImgToolGui.zip file to the same folder as where you placed the other files you downloaded.
Start VXImgToolGui.exe.
1. Make sure the top button is on the left for WRT54G, not the right for WRT54GS.
2. Put the MAC address from the bottom of your router in the box that says "Desired MAC".
3. Click on the three dots next to "output image" and save the file as My54gImage.bin in the same folder as everything else is located.
Power cycle the router (unplug the power from the router for 30 seconds and then plug it back in).
Open your browser to 192.168.1.1 by putting that in the browser address window of your browser. You should open the linksys webgui and NOT a page that says Management Mode. If you see management mode, power cycle the router again.
Enter "root" as the username and "admin" as the password.
Go to Administration and Firmware Upgrade.
Navigate to the folder that you are using, and select vxworks_prep_03.bin.
Hit upgrade.
Wait for FIVE FULL MINUTES. Go for a walk. Don't you TOUCH that router for FIVE MINUTES.
When five full Earth minutes have passed, power cycle the router.
Refresh your browser window. If you get a blank window, clear your browser cache. NOW you should be in the MANAGEMENT MODE window.
Select the My54gImage.bin file that you created. Hit Apply.
Wait for the "Upgrade Success" message, and then WAIT FIVE FULL MINUTES again. Don't TOUCH your router.
Start tftp.exe.
1. Enter 192.168.1.1 as the address in the top box of tftp.exe.
2. Leave the password blank.
3. Select the 12548 Newd_Micro.bin firmware.
4. Set retries to 99.
5. Power cycle the router.
6. Count to 2.
7. Hit upgrade.
When you get a success, wait FIVE FULL minutes.
If you don't get success, repeat from steps 19(4) up to this one. If you still don't get success, clear your browser cache. Try using a different browser as well, to navigate to 192.168.1.1.
When you can access the dd-wrt webgui using a browser at 192.168.1.1, power cycle the router.
When you can again access the dd-wrt webgui using a browser at 192.168.1.1, do another Hard reset or 30/30/30 on the router.
Reset your computer Ethernet connection to auto IP and auto DNS.
Check for recommended builds here.

Upgrading

Updating DD-WRT

If dd-wrt is already on the router follow these instructions. If stock firmware is on the router follow the flashing instructions.

Check for recommended builds here first.
Set your computer to a static IP of 192.168.1.7. (or to whatever subnet the router is on) Disable all firewalls and security. Disable wireless on your computer and only have the router connected to the flashing computer by the ethernet cable between the two.
Hard reset or 30/30/30 (If the router supports it, if not, reset to defults in the GUI) prior to flashing. Wait. Check for password page on re-login and change password.
Flash firmware. You can use the webgui except if you have a belkin router. (For belkin use tftp.exe to flash)
Wait...at least three minutes. Lights should return to normal. See important2, below. Failing to wait is how most people brick their routers.
Do a power cycle of the router. (Unplug the cord, count to 30 and plug it back in.)
Wait for the lights to return to normal usually about 2 minutes.
Hard reset or 30/30/30 again (If the router supports it, if not, reset to defults in the GUI). Wait. Check for the password page and re-login to change the password. Then you can reconfigure your settings manually.
Once configured set your computer back to autoIP and autoDNS.

Important1: This Hard reset or 30/30/30 works fine for Asus router, but you do have to power cycle after the reset.

Important2: After you flash the firmware, and before you do the hard reset, the router will be building some nvram settings. YOU MUST WAIT FOR THIS TO FINISH PRIOR TO DOING ANYTHING WITH THE ROUTER INCLUDING A HARD RESET. Usually, you can tell when this process is completed by the WAN light coming on, but it does take several minutes. Go have a beer. There are starting to be more and more people who BRICK their routers by not waiting until the nvram is rebuilt, PRIOR to doing a hard reset. YOU NEED TO WAIT!

Reverting

Reverting to OEM Firmware from DD-WRT

To get back to VxWorks (default firmware) you need special instructions.

JTAG-Serial Info

JTAG

JTAG Pinouts

 nTRST   1o o2	GND
   TDI   3o o4	GND
   TDO   5o o6	GND
   TMS   7o o8	GND
   TCK   9o o10	GND
 nSRST  11o o12  N/C

Using Universal JTAG Adapter

 white    1o o2	 black
   red    3o o4	 GND
  blue    5o o6	 GND
 green    7o o8	 GND
 yelow    9o o10  GND
 orange  11o o12  N/C

DD-WRT JTAG Recovery

/noemw /nocwd switches required

Backup CFE x2 (Compare the files, they must match exactly or there is something wrong with your JTAG setup)
Erase Wholeflash x2
Flash CFE
Unplug Power
Unplug JTAG Cable

TFTP:

Set Rig ip static 192.168.1.10
Plug network cable from rig to port 1
Get TFTP ready, server ip - 192.168.1.1, Password - blank, file - dd-wrt.v24_micro_generic.bin
Plug in power
As soon as windows says "connected" hit upgrade. May have to use a network hub to make sure windows is always connected.
Hard Reset 30\30\30

Serial

Serial Pinouts

 VCC  1 o o 2  VCC
 TX1  3 o o 4  TX0
 RX1  5 o o 6  RX0
 N/C  7 o o 8  N/C
 GND  9 o o 10 GND

DD-WRT Serial Recovery

Modified Redhawk0 instructions

Print out these instructions for Off-Line use
Connect PC to router with a network cable
Configure PC with a static IP of 192.168.1.10
Connect Serial cable
Start one of the programs from above
Get TFTP ready with file selected
Use dd-wrt.v24_micro_generic.bin
Connect power to the router
start a rapid fire Cntl-C as you plug the router to power
type "nvram erase" w/o quotes, hit enter
type "flash -noheader : flash1.trx" w/o quotes, this starts the tftp daemon, hit enter
but have TFTP ready
Click go or start on TFTP
give it 5 minutes after it finishes
then power cycle....Hard reset or 30/30/30...then config
when it stops spitting out txt....hit the enter key...you should get a login prompt...at that point, power cycle it, hard reset...then config
you'll see it boot up

vlan Info

DD-WRT vlan Info

TechInfoDepot:DD-WRT/VLAN Support

Confirmed the WRT54G v5.0 supports port-based vlans via the GUI.

Confirmed the WRT54G v5.0 supports port-based vlans via nvram with micro-plus-SSH.

WRT54G v5.0's ports are mapped like this:

1 2 3 4 | case labels
3 2 1 0 | nvram port numbers

Defaults

root@DD-WRT:~# nvram show | grep vlan.ports
vlan1ports=4 5
vlan0ports=3 2 1 0 5*
size: 19130 bytes (13638 left)
root@DD-WRT:~# nvram show | grep port.vlans
port5vlans=0 1 16
port4vlans=0
port3vlans=0
port2vlans=0
port1vlans=0
port0vlans=1
size: 19130 bytes (13638 left)
root@DD-WRT:~# nvram show | grep vlan.hwname
vlan1hwname=et0
vlan0hwname=et0
size: 19130 bytes (13638 left)
root@DD-WRT:~# lsmod
Module                  Size  Used by
ip_nat_pptp             2192   0 (unused)
ip_conntrack_pptp       2524   1
ip_nat_proto_gre        1552   0 (unused)
ip_conntrack_proto_gre    2312   0 [ip_nat_pptp ip_conntrack_pptp]
switch-robo             5036   0 (unused)
switch-core             5984   0 [switch-robo]
root@DD-WRT:~# ls /proc/switch
eth0
root@DD-WRT:~# cat /proc/switch/eth0/vlan/0/ports
0       1       2       3       5t*
root@DD-WRT:~# cat /proc/switch/eth0/vlan/1/ports
4       5t
root@DD-WRT:~# cat /proc/switch/eth0/vlan/2/ports
I
root@DD-WRT:~#

Commands

root@DD-WRT:~# nvram set vlan1ports="3 4 5"
root@DD-WRT:~# nvram set vlan0ports="2 1 0 5*"
root@DD-WRT:~# nvram commit
root@DD-WRT:~# reboot

nvram

root@DD-WRT:~# nvram show | grep vlan.ports
vlan0ports=2 1 0 5*
size: 19350 bytes (13418 left)
vlan1ports=3 4 5
root@DD-WRT:~# nvram show | grep port.vlans
port5vlans=0 1 16
port3vlans=0
port1vlans=0
size: 19350 bytes (13418 left)
port4vlans=0
port2vlans=0
port0vlans=1
root@DD-WRT:~# nvram show | grep vlan.hwname
vlan1hwname=et0
size: 19350 bytes (13418 left)
vlan0hwname=et0
root@DD-WRT:~#

GUI

root@DD-WRT:~# nvram show | grep vlan.ports
vlan1ports=4 5
vlan0ports=3 2 1 0 5*
size: 17380 bytes (15388 left)
root@DD-WRT:~# nvram show | grep port.vlans
port5vlans=0 1 16
port4vlans=1 18 19
port3vlans=0 18 19
port2vlans=0 18 19
port1vlans=0 18 19
port0vlans=1 18 19
size: 17380 bytes (15388 left)
root@DD-WRT:~# nvram show | grep vlan.hwname
vlan1hwname=et0
vlan0hwname=et0
size: 17380 bytes (15388 left)
root@DD-WRT:~#