broadcom K3.x builds minipulate the RAM to allow 256 nvram.
Works well on some routers for some things.... pain in the ass on some others.
If you put a K2.6 build on your old linksys broadcom it would show 60 or 64 for nvram
You are such a wealth of knowledge, mrjcd! Thanks for explaining this to me. Makes perfect sense.
It is not an issue or an advantage AFAIK, but I just remember I was very limited and running out of NVRAM on my WRT54GLs, especially when trying to get OpenVPN set up. Then again, it only had 32KB so there ya go!
I definitely could see a large countries blocking in iptables eating up large portions of NVRAM for sure however.
Shouldn't be an issue with nvram.
I just checkedvin to see if mine was still alive and it only uses 39KB nvram.
30+ static leases
bunch port forwards
VAPs on both radio
bunch stuff in QOS
2048 keys for ovpn server
unbound uses a bit also
.....and she is still fat & happy
edit:
my wealth of knowledge = 0
my other wealth = -1
Why does this router only have 64KB of NVRAM? My EA2700 has 256KB, and it is a pretty crappy router in comparison. Is it possible to increase the NVRAM in the EA8500?
What are you talking about?
EA8500: Flash 128 MiB + RAM 512 MiB
EA2700: Flash 64 MiB + RAM 64 MiB
I am referring to NVRAM, not system RAM. NVRAM is the portion that contains the router config settings. Go to Status tab and look under Space Usage NVRAM.
I know what NVRAM is, but it doesn't warrant a comparison between the EA8500 and EA2700.
You will not use more than the 64k.
Flash and Ram are the ones you should compare.
It is not an issue or an advantage AFAIK, but I just remember I was very limited and running out of NVRAM on my WRT54GLs, especially when trying to get OpenVPN set up. Then again, it only had 32KB so there ya go!
I definitely could see a large countries blocking in iptables eating up large portions of NVRAM for sure however.
Country blocking should be of no concern either. Ipset is used for that. True it's not officially supported on DD-WRT but you can check threads like this one https://www.dd-wrt.com/phpBB2/viewtopic.php?p=955296
In short, NVRAM size shouldn't worry you.
If you are the worrying type I can't tell you stuff that will keep you up at night
Country blocking should be of no concern either. Ipset is used for that. True it's not officially supported on DD-WRT but you can check threads like this one https://www.dd-wrt.com/phpBB2/viewtopic.php?p=955296
In short, NVRAM size shouldn't worry you.
If you are the worrying type I can't tell you stuff that will keep you up at night
I am not the worrying type, I was merely curious why the differences between the two routers. I do know many things that could keep me up at night lol, but I tend not to worry about things I have no control over.
Posted: Sat Jul 22, 2017 20:03 Post subject: Mounting USB Flash Drive
okay, so I connected a 8GB USB drive to the port 1 of the router. Selected Auto Mount but did not give it a path, but it does mount it as /tmp/mnt/sda1. However, although I have formatted it as EXT2, it is mounting as EXT4, and read only. If I manually issue the command #mount -t ext2 -rw -o remount /dev/sda1 it still is mounted as a read only ext4. What am I doing wrong?
EDIT: Oddly enough, when I access it via Samba, I can write to it! Weird that I cannot from an ssh session with the touch command.
I had an EA8500 just crap out on me yesterday, possibly due to nvram issues -- was running Kong 32590M on it and was working fine.
I was adding new MAC addresses to the Static DCHP leases and found that on my last two additions, the webgui would hang, give me an empty response error, and stop working for about a minute and then the webgui would respond.
However, on a reboot of the router, it would not come up. Connected up to serial, and was seeing the following:
Code:
[ 3.167642] searching for nvram
[ 3.171937] nvram size = -1066954702
[ 3.194456] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 3.202156] UBIFS error (pid 1): ubifs_mount: cannot open "ubi0:rootfs", error -19
[ 3.206942] VFS: Mounted root (squashfs filesystem) readonly on device 31:16.
[ 3.208750] Freeing unused kernel memory: 188K (c06e7000 - c0716000)
start service
starting Architecture code for ipq806x
cannot open /dev/nvram
udevtrigger[52]: parse_config_file: can't open '/etc/udev/udev.conf' as config file: No such file or directory
sysinit using mac XX:XX:XX:XX:XX:XX
[ 5.203594] UBIFS error (pid 711): ubifs_mount: cannot open "ubi0:rootfs_data", error -19
mount: mounting ubi0:rootfs_data on /jffs failed: No such device
[ 5.241536] nvram_commit: read error ret = -74, len = 65536/65536
nvram_commit(): failed
/dev/nvram: I/O error
reset boot counter
load ATH 802.11 a/b/g Driver
insmod: ath_pci.ko: module not found
insmod: ath_ahb.ko: module not found
load ATH9K 802.11n Driver
[ 6.393196] Loading modules backported from Linux version wt-2017-01-31-0-ge882dff19e7f
[ 6.393244] Backport generated by backports.git backports-20160324-13-g24da7d3c
Hangs after this point.
I reflashed via tftp a number of builds, including 32590M, 31780M, and the lastest Kong and they all error out at the same position. I also tried swapping the boot partition, but to no avail. Is there any way to check or reset the nvram from the serial console? _________________ Router List:
Asus RT-AC1900 (RT-AC68U C1) - Kongac 31870M - AP (HT40 & VHT80)
Netgear AC1450 - Kongac 32170M - Wireless Client / Repeater (HT40 & VHT80)
Linksys WRT610N v2 - BS 30805mega - Wireless Client / AP
Asus WL-520GU - tomato 1.28.7821 MIPSR1-Toastman-ND K26 USB Lite - Print Server
TP-Link TL-WR741ND v4 - Brainslayer r31791 - Wireless Client
Spares:
Asus RT-N10P - tomato K26-1.28.RT-N5x-MIPSR2-138-Max - Wireless Client
Last edited by waxhell on Mon Jul 24, 2017 20:15; edited 1 time in total
and you should take care about adding stuff in GUI on builds
that are known to have some GUI hangs ....recent builds
I gave that a shot and still no luck -- performed a prolonged reset (more or less an extended 30-30-30) with the unit unplugged for several minutes.
I have gotten past that hang once or twice randomly and ends up hanging right after the next driver (ATH 802.11ac). The same nvram_commit read error occurs (with the exact same text).
For a little bit of background:
This was a refurb unit (from Linksys) that I got recently, so possibly something intermittently bad necessitated a return? This is an older PCB unit, that still has the serial header soldered on. _________________ Router List:
Asus RT-AC1900 (RT-AC68U C1) - Kongac 31870M - AP (HT40 & VHT80)
Netgear AC1450 - Kongac 32170M - Wireless Client / Repeater (HT40 & VHT80)
Linksys WRT610N v2 - BS 30805mega - Wireless Client / AP
Asus WL-520GU - tomato 1.28.7821 MIPSR1-Toastman-ND K26 USB Lite - Print Server
TP-Link TL-WR741ND v4 - Brainslayer r31791 - Wireless Client
Spares:
Asus RT-N10P - tomato K26-1.28.RT-N5x-MIPSR2-138-Max - Wireless Client
and you should take care about adding stuff in GUI on builds
that are known to have some GUI hangs ....recent builds
I gave that a shot and still no luck -- performed a prolonged reset (more or less an extended 30-30-30) with the unit unplugged for several minutes.
I have gotten past that hang once or twice randomly and ends up hanging right after the next driver (ATH 802.11ac). The same nvram_commit read error occurs (with the exact same text).
For a little bit of background:
This was a refurb unit (from Linksys) that I got recently, so possibly something intermittently bad necessitated a return? This is an older PCB unit, that still has the serial header soldered on.
hmmm...may have some bad blocks in the memory
had to do an edit --- damn phone is no good to post with in this forum
EA8500
DD-WRT v3.0-r32802M kongat (07/24/17)
Linux 3.18.62 #134 SMP PREEMPT Mon Jul 24 17:31:00 CEST 2017 armv7l
unbound still broken
Takes a good 30 seconds to establish a telnet connection if Recursive DNS is enabled...
... same on last few Kong builds ... some funny business going on there -
Haven't had any GUI hangs just tinkering around.
If I didn't want Recursive DNS ---
and if I wanted to use QOS -- I would disable Shortcut Forwarding Engine and all
should work very good for that. SFE is still on if QOS is on .. unless you disable on main setup page.
QOS UL still works but there is no QOS DL -- so if you have some latency issuse with DL you might
as well disable SFE.
If I was on a Gigabit Internet connection I would use SFE.
So far so good, been stable over 5ghz wifi other than the errors on the RX which i dont know what to make of it..
Firmware: DD-WRT v3.0-r32693 std (07/14/17)
Your picture made me realize that I am not getting full speeds on my wifi. I am using the recommended settings here: https://www.dd-wrt.com/wiki/index.php/QCA_wireless_settings and I have done a full reset 30/30/30. I am on version 32590 but I have not gotten it on prior versions either. My speeds cap out at 433M both send/receive and I have never seen higher. I am using a couple Samsung Galaxy S7 phones that I expect should get higher.
So far so good, been stable over 5ghz wifi other than the errors on the RX which i dont know what to make of it..
Firmware: DD-WRT v3.0-r32693 std (07/14/17)
Your picture made me realize that I am not getting full speeds on my wifi. I am using the recommended settings here: https://www.dd-wrt.com/wiki/index.php/QCA_wireless_settings and I have done a full reset 30/30/30. I am on version 32590 but I have not gotten it on prior versions either. My speeds cap out at 433M both send/receive and I have never seen higher. I am using a couple Samsung Galaxy S7 phones that I expect should get higher.
433 is all they will do.
You won't find many mobile devices that will do more.
iPhone 6 & 7 will do 866.
He is in client mode to another router.
Two EA8500 will show 1733 but usually holds around 1560.
----
EDIT: r32868 -
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=1088636#1088636
Last edited by mrjcd on Tue Aug 01, 2017 2:25; edited 1 time in total
So far so good, been stable over 5ghz wifi other than the errors on the RX which i dont know what to make of it..
Firmware: DD-WRT v3.0-r32693 std (07/14/17)
Your picture made me realize that I am not getting full speeds on my wifi. I am using the recommended settings here: https://www.dd-wrt.com/wiki/index.php/QCA_wireless_settings and I have done a full reset 30/30/30. I am on version 32590 but I have not gotten it on prior versions either. My speeds cap out at 433M both send/receive and I have never seen higher. I am using a couple Samsung Galaxy S7 phones that I expect should get higher.
433 is all they will do.
You won't find many mobile devices that will do more.
iPhone 6 & 7 will do 866.
He is in client mode to another router.
Two EA8500 will show 1733 but usually holds around 1560.
