Asuswrt-Merlin - custom build of the Asus RT-N66U firmware

[RMerlin]

After a while of disabling the downloadmaster. The usage of RAM is still very high. Here is the print out of the 'ps w' command in telnet.



Is it normal?

Not sure since I don't torrent from the router, but it sounds plausible to me.

If you are using a hard disk (and not a USB flash), you could try enabling swap support. Note that I haven't tested it myself yet, but try this:

1) Telnet in (or go to the Run Cmd page)
2) run these:

nvram set apps_swap_enable=1
nvram set apps_swap_size=256000
nvram commit

Then reboot. After reboot, check available memory (through "free"), or through the Sysinfo page (if running build 14). See if this helps with general stability and performance.

 

[Fab30]

Show as Multi Flash Card Reader.... sdcx...

 

[IcEMoCHa]

Not sure since I don't torrent from the router, but it sounds plausible to me.

If you are using a hard disk (and not a USB flash), you could try enabling swap support. Note that I haven't tested it myself yet, but try this:

1) Telnet in (or go to the Run Cmd page)
2) run these:


Then reboot. After reboot, check available memory (through "free"), or through the Sysinfo page (if running build 14). See if this helps with general stability and performance.

Alright.. Will try that later..

But I suspect a memory leakage somewhere, because with the usb HDD plugged in the free memory would slowly decrease till 6-7MB with torrent disabled.

As I unplug the HDD the free memory goes up to 200MB+.

 

[erwinquek]

Hi RMerlin,

Able to advise how to troubleshoot this problem?

Speed is good on my RT_N66U.

However, I noticed that when I download using Download Managers, I cannot load certain websites or my son cannot login to his Minecraft game, what is wrong? Anyone else ever encounter this?

Download is via a different computer and web access via another. Not using the same machine. During this problem, access to speedtest site is ok with good speeds. Thus, don't think the issue is due to bandwidth being max out.

Tired with .162, Beta .151 and .155 and Asuswrt-Merlin with the same results.

Max setting for Download Managers is 4 concurrent downloads with 3 connections, anything higher will have problem. Strangely, the problem only affects some sites and minecraft game. For unaffected sites, access is as normal.

What is wrong?

 

[savestheday]

Is anyone able to get SSHd working on a non standard port? I can hit it from the LAN but not the WAN.

EDIT
Looks like a few pages back someone else had the same issue

http://forums.smallnetbuilder.com/showpost.php?p=45538&postcount=556

Any idea on how a noob could fix this? Thank you!

 

[RMerlin]

Hi RMerlin,

Able to advise how to troubleshoot this problem?

No idea, sorry. Could very well be an issue with your Internet connection as well, where generating too much traffic causes large packet losses. You could also be saturating your upstream speed, which can cause such random connectivity issues.

Did you try both with and without QoS enabled on the router?

 

[emax.b]

System Log - General Log

Hi RMerlin,

in my "System Log-General Log" is full of this message:

Aug 15 13:43:30 kernel: printk: 23 messages suppressed.
Aug 15 13:43:30 kernel: protocol 0000 is buggy, dev eth2
Aug 15 13:43:35 kernel: printk: 5 messages suppressed.
Aug 15 13:43:35 kernel: protocol 0000 is buggy, dev eth0
Aug 15 13:43:39 kernel: printk: 23 messages suppressed.
Aug 15 13:43:39 kernel: protocol 0000 is buggy, dev eth0
Aug 15 13:43:45 kernel: printk: 12 messages suppressed.
Aug 15 13:43:45 kernel: protocol 0000 is buggy, dev eth0
Aug 15 13:43:49 kernel: printk: 48 messages suppressed.
Aug 15 13:43:49 kernel: protocol 0000 is buggy, dev eth2
Aug 15 13:43:55 kernel: printk: 107 messages suppressed.
Aug 15 13:43:55 kernel: protocol 0000 is buggy, dev eth0
Aug 15 13:44:00 kernel: printk: 12 messages suppressed.
Aug 15 13:44:00 kernel: protocol 0000 is buggy, dev eth2
Aug 15 13:44:04 kernel: printk: 5 messages suppressed.
Aug 15 13:44:04 kernel: protocol 0000 is buggy, dev eth2
Aug 15 13:44:10 kernel: printk: 14 messages suppressed.
Aug 15 13:44:10 kernel: protocol 0000 is buggy, dev eth0
Aug 15 13:44:15 kernel: printk: 25 messages suppressed.
Aug 15 13:44:15 kernel: protocol 0000 is buggy, dev eth0
Aug 15 13:44:19 kernel: printk: 13 messages suppressed.
Aug 15 13:44:19 kernel: protocol 0000 is buggy, dev eth0

What does it mean?

Thanks

 

[erwinquek]

No idea, sorry. Could very well be an issue with your Internet connection as well, where generating too much traffic causes large packet losses. You could also be saturating your upstream speed, which can cause such random connectivity issues.

Did you try both with and without QoS enabled on the router?

Hi RMerlin, thanks for the reply. Yes, I did try with QOS on or off. I find it very odd is when the problem occurred, only access to certain sites is affected, or my son cannot play his Minecraft. Even during this time, surfing to unaffected sites is as per normal and other applications accessing the internet have no problems at all.

Frankly, I think many might have this problem but did not noticed it. For me, I know which are affected thus keeps zooming into it to test if certain settings can resolve it.

Just a wild guess, maybe setting MTU to 1492 will solve it.

BTW, if I use your firmware, will it be ok to restore my .162 save config into it? Lazy to configure all over again.

 

[uncle.f]

Is anyone able to get SSHd working on a non standard port? I can hit it from the LAN but not the WAN.

Looks like a few pages back someone else had the same issue

Any idea on how a noob could fix this? Thank you!

With all due respect to all of the great improvements done by RMerlin, the option of enabling SSH/WAN access is pretty much standard on most custom router firmwares. It is something that is really missing here (as well as the option of disabling access to the router's web interface from WiFi connected clients).

Could we maybe hope that adding two more 'yes/no' options in the web interface and one or two relevant rules to the firewall script can be done in the future and work out of the box without custom scripts?

Lots of users would appreciate this, IMHO.

 

[RMerlin]

Hi RMerlin,

in my "System Log-General Log" is full of this message:



What does it mean?

Thanks

Posted quite a few times already on the forum here, disable VPN broadcast if you want to get rid of these.

 

[RMerlin]

BTW, if I use your firmware, will it be ok to restore my .162 save config into it? Lazy to configure all over again.

If you are referring to a backup made with Asus's firmware, I don't recommend it, since I use a 64K nvram, while Asus uses 32 KB nvram (for now). It might work, but it's not guaranteed.

 

[RMerlin]

With all due respect to all of the great improvements done by RMerlin, the option of enabling SSH/WAN access is pretty much standard on most custom router firmwares. It is something that is really missing here (as well as the option of disabling access to the router's web interface from WiFi connected clients).

Could we maybe hope that adding two more 'yes/no' options in the web interface and one or two relevant rules to the firewall script can be done in the future and work out of the box without custom scripts?

Lots of users would appreciate this, IMHO.

This is simply a case of "too much to do, and too little time". I'm one person doing all of this on my free time. Just rebasing the code on a new firmware version and then testing it pretty much takes a whole evening. This is the current focus with the release of 178 (and now 182 is just around the corner). I have to put the focus on this first, due to the bugfixes it brings. Bugfixes always have priority over features.

That's why I give simple workaround whenever possible. The rest will come once I have time to do it.

 

[erwinquek]

If you are referring to a backup made with Asus's firmware, I don't recommend it, since I use a 64K nvram, while Asus uses 32 KB nvram (for now). It might work, but it's not guaranteed.

RMerlin, would u recommend QOS to be on or off. Does it do what's its supposed to?

 

[savestheday]

With all due respect to all of the great improvements done by RMerlin, the option of enabling SSH/WAN access is pretty much standard on most custom router firmwares. It is something that is really missing here (as well as the option of disabling access to the router's web interface from WiFi connected clients).

Could we maybe hope that adding two more 'yes/no' options in the web interface and one or two relevant rules to the firewall script can be done in the future and work out of the box without custom scripts?

Lots of users would appreciate this, IMHO.

I understand the security implications for having a WAN SSHd. I honestly wouldn't mind if this option remained the way it is and for power users to enable it via a firewall script. Of course it would be nice to have a checkbox for it. I just would love to know the command to run to enable it in the firewall!

This firmware beats Shibby Tomato in 5ghz range and I love that the PPTP server can have more complicated passwords (can't use symbols on Shibby's firmware). This is really the only part that's really a show stopper for me.

Thank you RMerlin!

 

[savestheday]

This is simply a case of "too much to do, and too little time". I'm one person doing all of this on my free time. Just rebasing the code on a new firmware version and then testing it pretty much takes a whole evening. This is the current focus with the release of 178 (and now 182 is just around the corner). I have to put the focus on this first, due to the bugfixes it brings. Bugfixes always have priority over features.

That's why I give simple workaround whenever possible. The rest will come once I have time to do it.

Thanks dude! I just missed the work around piece. Do you know the exact command to run?

 

[RMerlin]

Thanks dude! I just missed the work around piece. Do you know the exact command to run?

iptables -I INPUT 2 -p tcp --dport 22 -j ACCEPT

 

[RMerlin]

RMerlin, would u recommend QOS to be on or off. Does it do what's its supposed to?

Depends on your needs. If you do a lot of torrenting, you use VoIP, or you have many users sharing the same connection, then it's a good idea. Otherwise, you will gain in performance by disabling it, since it will allow the user to use HW acceleration.

Also, a badly configured QoS is worse than no QoS. Make sure you read the FAQ on Asus's site about QoS configuration.

 

[diyguy]

Hi,

I was looking at my router notice that root is 100% full

any idea how to figure out what is filling it ?



/dev/root 18624 18624 0 100% /
tmpfs 127760 3168 124592 2% /tmp
devfs 127760 0 127760 0% /dev
/dev/mtdblock4 12416 648 11768 5% /jffs
/dev/sda1 487697344 45105856 442591488 9% /tmp/mnt/WD_500

 

[diyguy]

Also anothe question. I am useing DNS servers 4.2.2.2 and 8.8.8.8

Should those entries be in the /etc/resolv.conf ? the resolv.conf shows only 127.0.0.1

 

[RMerlin]

Also anothe question. I am useing DNS servers 4.2.2.2 and 8.8.8.8

Should those entries be in the /etc/resolv.conf ? the resolv.conf shows only 127.0.0.1

Asus uses dnsmasq as a DNS resolver. 127.0.0.1 tells the router to use its own resolver (dnsmasq), which in turn will use the DNS servers you configured.