Posted: Sun Jul 12, 2015 14:54 Post subject: cisco ven401 working!
i have gotten dd-wrt k26 64k nvram build (kong mod 22000M) working on the cisco ven401 A/N access point. this device was supplied by at&t as 5ghz access for uverse. there are some unusual things about the radio, which is only 5g. i have been trying to recommmission it as a wireless media bridge for a smart tv, and fnally found a build that works.
it has a relatively bullet-proof cfe and it is easy to upload various firmwares by tftp as soon as you get a ttl=100 prompt over the single lan port. it has 8mb rom, 64mb ram, and a bcm4717 SOC. it has only a 5g radio. hardware details are here
edit: the most recent k26/nvram 64k r27506 build works also, with alittle work. the cfe only takes raw images with HDR0 as the first bytes. so you have to strip off the first 32 bytes of nv64 files to get the hdr0 format. i save these as .trx to maybe keep things straight for my own good.
Posted: Wed Jul 29, 2015 20:07 Post subject: Cisco VEN401
I managed to finally get DD WRT loaded onto this device after having to restore it from serial. However DD WRT does not survive a reboot and once the AP boots up it never gets past the CFE again. When it was loaded I still was not able to connect via ethernet to the web interface and the power LED remained solid. I have tried several different builds with the same result the AP wont survive the reboot. Have you had any success with this up to this point. If so what exactly have you done and used. I have tried the 22000 King Kong Build and it doesn't work either. Also was not able to determine any SSID's being broadcast from the device as well.
what i did, as in my post above:
1. strip off the header off the dd-wrt 64k nvram 3.x image (as mentioned, i used kong's 22000M and the recent BS r27506 build) so the file begins with HDR0.
2. flash from the cfe bootloader just after powerup, over the ethernet cable. the AP cfe is at 192.168.1.1 like most broadcom units. the ttl=100 prompt is available for a few seconds.
3. let the thing fully flash and reboot.
4. hold doen the reset button and do another power cycle
5 log into dd-wrt at 192.168.1.1
i had to 'assign wan port to lan' and disable wan access to get the wireless and ethernet ports on the same bridge.
i can't explain your reboot issues, although i had that issue when i was trying openwrt. i did erase the nvram mtd partition going from openwrt to dd-wrt; maybe try that is you are still unsuccessful.
Thank you. I am going to give it a try here in a little bit. I have like 10 of the VEN401's that I have a buyer for but doesn't want them with the AT&T firmware as supposedly AT&T has a backdoor in it for their system.
Do you know if anything has been done on the Motorola Arris VAP2500's? I have 12 of those as well.
I can get about 5 of these things a week for free but quit getting them as they were useless hopefully till now.
I will let you know as soon as I can get the r27506 build on it and see if it works.
mayby reset dd-wrt config, and/or erase nvram and let the cfe rebuild it?
interface wl0 is eth1 on my device.
interface eth0 is the ethernet port
i have only used the thing as an AP or ethernet bridge, so i have bridged them together. you have to 'assign Wan port to switch' on the first setup page, and disable WAN access. i have not tried using this device as a one-port router to see how the switch is actually configured.
my ifconfig and dmesg output follows for comparison.
i think there is more than one version of this router. i ordered 4 off ebay, and got stuck with the same problem you describe on one of them. i'm investigating further and will post an update
try going back to stock and see if wireless works on that. then maybe DONT erase nvram when going to dd-wrt.
finally - you have to check 'bridge wan to lan' on the first setup page to get both interfaces on br0
Well when I flashed from stock the wifi did not work right off the git.
It looks to me like it's not even setting up the wifi interface so Im thinking it's some sort of driver issue.
DD-wrt also reports it as a Linksys WRT54G/GL/GS
which is way off.
IIRC those was "G" 2.4ghz routers.
maybe it's a internal configuration problem.
Do you have a link to stock firmware? I don't even have one to go back to.. I rescued this one from the trash and it was fairly useless with it's original firmware.. at least the AT&T modified one.. maybe cisco makes a clean base stock?
I just wanted it to add 5ghz to my network but I seen it trying to fetch a lot of crap off the net so stock was untrustworthy.
stock firmware communicates with at&t for updates, status, etc. i don't think it's malicious.
mine is also identified as a wrt54g/gl/gs but that does not seem a big deal to me. i think that is the default for devices not matching known device id's.
i looked for vanilla firmware from cisco but could not find any.
i got factory firmware from : http://driversdownload19.blogspot.com/2007/02/cisco-ven401-at.html
Posted: Mon Oct 12, 2015 6:53 Post subject: Cisco VEN401
I finally managed to get a running firmware with wireless working. But it is a pain in the ass to configure. I found someone mention the hardware was very similar if not identical to that of the WRT160n and so I tried that firmware and sure enough it booted right up survives a reboot and reset. However it says the wireless is up and running I do not have any devices that are 5Ghz to test it out. I am running v24 SP2 of the WRT 160n Firmware