Asus AiMesh Routers – Show Ethernet Link Speed via CLI


How to show ethernet connection link speed on Asus AiMesh routers via SSH. While you can see the link speeds via the Web UI for the main AiMesh router, you cannot, as far as I can tell, find the same info for each of your AiMesh nodes. Normally on a Linux system I would use Ethtool to show my such info, but we are running ASUSWRT, and do not want to have to install any additional packages.

Enter robocfg

The command you are looking for is “robocfg

Below is an example of the output from one of my AiMesh Nodes (not primary). Specifically I am looking to see the connection speed on port0 as this is my backhaul network

Command below.

admin@RT-AC68U-CA00:/tmp/home/root# robocfg show
Switch: enabled 
Port 0: 1000FD enabled stp: none vlan: 2 jumbo: off mac: f8:0f:f9:98:a3:1e
Port 1:  100FD enabled stp: none vlan: 1 jumbo: off mac: 9c:8e:cd:09:f6:1b
Port 2:  100FD enabled stp: none vlan: 1 jumbo: off mac: 9c:8e:cd:13:32:5f
Port 3:  100FD enabled stp: none vlan: 1 jumbo: off mac: 9c:8e:cd:12:32:29
Port 4:   DOWN enabled stp: none vlan: 1 jumbo: off mac: 00:00:00:00:00:00
Port 5: 1000FD enabled stp: none vlan: 1 jumbo: off mac: 68:1d:ef:21:d3:9b
Port 7:   DOWN enabled stp: none vlan: 1 jumbo: off mac: 00:00:00:00:00:00
Port 8:   DOWN enabled stp: none vlan: 1 jumbo: off mac: 00:00:00:00:00:00
VLANs: BCM5301x enabled mac_check mac_hash
   1: vlan1: 1 2 3 4 5t
   2: vlan2: 0 5t
1045: vlan1045: 0 2 3t 7 8t
1046: vlan1046: 1 3 4t 5 7
1047: vlan1047: 0t 4t 7
1099: vlan1099: 3t 4
1100: vlan1100: 5t 8u
1101: vlan1101: 0t 3 4 7 8u
1102: vlan1102: 1 2 3t 4t 5t 7t
1103: vlan1103: 1 3t 4 5

Screenshot for reference

What else does robocfg do?

Appears that you can also use robocfg to set link speeds and disable/enable ports – Here is more info

Asus AIMesh – Find AI Mesh Node IP addresses and Test Connectivity


This post will show you how to find the dynamic ip address assigned to your AiMesh node, and then test connectivity via ping.

Currently using 3 Asus AiMesh (similar to what is shown above) nodes in my home network to provide decent wireless coverage in my home. With so many devices using wireless these days, you are bound to run into a number of devices that just have terrible WIFI radios, and therefore are difficult to keep online unless they are right next to the wireless router.

I recently experienced an issue with poor connectivity between nodes, this was mostly due to the fact that I was not using a wired backhaul between nodes to connect the “mesh“, rather I was using 5ghz wifi to connect the nodes. This is not optimal, so I purchased a couple of Powerline ethernet adapters to “wire” the backhaul,

Note, My main router is a RT-AC68R. I am currently running Firmware Version, directly from Asus, have not explored using Merlin with my AiMesh routers.

Once you connect an existing router to your main AiMesh router, it appears that any static IP addresses assigned to any of the devices removed and an IP address is statically assigned. Finding that IP is the challenge, as you need that to test connectivity

Finding IP addresses of AiMesh Nodes

Select Network Map, if this is not the default screen you see after login.

Click the Number by “AiMesh Node” – I have two additional nodes, so the number I see is “2“. Click this number.

You will now see your AiMesh nodes in the right pane.

Now select each node individually by clicking on them. This will result in a pop-up window that will show you the IP of each node. In the example below, the IP address of my node in the basement is

Testing Connectivity via Ping

Select Network Tools under Advanced Settings in the left pane.

Using Ping as method, enter your AiMesh Node IP address in the target, set count. I suggest at least 10 or more packets. Then mash Diagnose. This will show your the time a packet and its response take to travel to the selected IP and then back again.

Asus RT-AC66U: How to Configure DHCP Static IP Reservations for IOT/Smart Home Devices


I’ve never been a fan of using DHCP reservations to reserve an IP address for a device. However, there are a few situations where a static reservation is the best route to take.

Try your hand with Home Automation via devices like the Wink Hub,  IP cameras,  smart plugs,  satellite receivers, or even the Raspberry Pi and you will know full well the right time to use a static IP reservation.

In this post, I am going to walk you through that process on the Asus RT-AC66u.

First, log into your Routers webUI, select “LAN” in the left-hand menu. Then select the “DHCP Server” tab. Scroll midway down the page. Locate “Enable Manual Assignment” and select the “Yes” radio button.



Just below the section above, you will see a drop down box that you can use to select your device using the MAC or currently assigned IP. Enter the “Hostname” for the device. Select “Add/Delete“. This will add your device to the list.



Scroll down and find your device in the list. Select the icon to the left.  Change the “Name” of the device if you so desire. The only really important information here is the “IP” and the “MAC”. 




Here you also can change the default icon for the device, or add your own custom icons. Here, I am using a camera icon that I downloaded.



Below you can see some of the custom icons and names that I have set to help me keep track of my devices.



Asus RT-AC66: Cannot Login Unless Logout Another User First



When attempting to login to your router’s webUI, you may have run into the error below.

cannot Login unless logout another user first.

This error is usually caused by improperly closing router’s WebUI. This can occur if you are logged in and lose connectivity, or if your browser crashed.

Fortunately, the fix is simple… Assuming you have SSH enabled.

First, SSH into your router and run the two commands shown below.

admin@RT-AC66U:/tmp/home/root# nvram unset login_ip
admin@RT-AC66U:/tmp/home/root# nvram commit

See screenshot below


Now, attempt to login via the webUI. You should be able to log in without issue.

If you do not have SSH or telnet enabled, you can just power cycle your router.



Configure Syslog Logging Levels on the Asus RT-AC66U Router


So here is a quick little one that I figured out the other day. Having just setup a Splunk server at home I wanted to make sure that I was not going to hit the data limit of 500mb a day for the free version of Splunk. I figured out pretty fast that my ASUS RT-AC66U was a very chatty-cathy when it came to syslog… sending me all sorts of very raw data that I was, at least at first, not so sure I was interested in indexing. So I hit the cli and started poking around.

First off, before we jump in, let’s make sure that we are all on the same page. First thing to note is that I am running the custom Merlin firmware, however that doubt that the stock firmware is much different. Second, let’s make sure that we all know how to configure syslog on our Asus.

To setup forwarding syslog to a remote syslog server, you first client on “Administration” in the “Advanced Settings” panel on the left. Then select the “System” tab near the top of the page. Scroll down to “Miscellaneous”. This section is shown below. Enter the IP address of your syslog server (or Splunk server in this case) in the “Remote Log Server” field.


Now lets get down to the business of adjusting our logging level. First you need to ssh into your router.

Note that it appears that by default the log level is set to 7.

admin@RT-AC66U: # nvram show | grep log_level

Now before you get too excited, I am actually not sure that the main log level adheres to rfc5424. I have yet to find any published documentation from Asus to confirm this. However, according to this guy’s blog, this configuration might be a bit less chatty. Note that there are a few additional settings here which you can play around with. With these settings, I am assuming that 1 is on, and 0 if off. I am still experimenting.

admin@RT-AC66U: # nvram set log_level=2
admin@RT-AC66U: # nvram set log_enable=1
admin@RT-AC66U: # nvram set log_rejected=1
admin@RT-AC66U: # nvram set log_dropped=1
admin@RT-AC66U: # nvram set log_accepted=0

Now lets save our change and reboot

admin@RT-AC66U: # nvram commit
admin@RT-AC66U: # reboot

Note that there also is a vpn_loglevel=3 setting that can be configured via nvram. This setting might be useful to those running a VPN server on their router.

Disk I/O Monitoring on the Asus RT-AC66U Router

asus-rt-ac66uThe Asus RT-AC66U, like many home routers that are on the market today, allow you to connect a USB drive to one of its onboard USB ports and share this disk out to your network.  Via the RT-ACC66U, you can share your NAS disk via CIFS or NFS. My configuration has a 1TB unmirrored drive used for temporary scratch storage, and as a network landing area for files that I want to backup.

Note that this is my 4th article on hacking the RT-AC66U. You can check out my other articles below if you are interested.

As you must already know, the Asus RT-AC66U runs Busybox, which is a very small but powerful embedded Linux distro. Because of this there are a lot of familiar commands available via the CLI. However, don’t get to comfortable, as this is still a very foreign land.

Note that this article assumes that you have ssh or telnet working and can log into your RT-AC66U via the CLI.

As I have stated before, you can use the ipgk command to search for and install packages. In the example below I searched for iostat, but found dstat instead. Either one was fine for my purposes…. at least initially.

admin@RT-AC66U:/tmp/home/root# ipkg list | grep iostat
dstat – 0.7.0-1 – dstat is a versatile replacement for vmstat, iostat, netstat, nfsstat, and ifstat

Now that I know what to install, I need to install it.

admin@RT-AC66U:/tmp/home/root# ipkg install dstat
Installing dstat (0.7.0-1) to /opt/…
Configuring dstat
Successfully terminated.

Now that dstat is installed lets run it. The switches “rad” enable i/o stats and enable disk stats. The “-D” option allows us to specify a disk by name.

admin@RT-AC66U:/tmp/home/root# dstat -rad -D sda

The command above output what you see below.


As I mentioned above, dstat is most definitely, a very useful command. However, so far I have not been able to figure out how to get it to display the percentage utilized for a drive, which is rather easy to do with iostat.

How to Add a Static Route on the ASUS RT-AC66U

ASUS_RT-AC66U_newsBased on the popularity of my previous ASUS RT-AC66U post regarding SNMP, I have decided to put together a simple post on how to configure static routing on the home router known as the Dark Knight.

In my humble abode, the RT-AC66U is the core of my home network, providing DHCP and Wireless to a plethora of devices. However, I am also running a small home lab which I need to be able to access from my home desktop. Hence the need for static routes.

Specifically, my home lab hosts the following networks;,, The IP address of my ASUS RT-AC66U is the default one of My desktop is on the network.

In order for me to access my lab from my desktop (and from the rest of my home network), I need to tell my ASUS how to route traffic destined for my 10. networks.

In order to accomplish this, we first need to navigate to LAN on the left pane, and then selecting the Route tab.


As shown in the screenshot above, we first need to select the “YES” radio button to “Enable Static Routes”. Next we enter a network ip (or static ip — if that’s what we are up to) into the “Network/Host IP “field. Then we enter our netmask into the field that is not surprisingly labeled Netmask”. In my case my netmask is

Now we move on to the field labeled “Gateway”. Here we need to enter what the next network hop for that a packet that is needs to route to our lab network. In my environment, this is, which is another router.

Then select “LAN” from the drop down as all our traffic will route to the internal LAN only, and not out to the internet or WAN. Now click the plus sign to add your new route.

Now when a packet destined for one of my lab networks outlined above hits my ASUS router, it will be forwarded to, which is my lab router.

Note that you can also add static routes via the busybox command line, however I am not going to go into that today. Its simple enough to add them in the WebUI.