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MikroTik RB750 router

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kg7kmv
MikroTik RB750 router
I've been at this for a few days, and while I have certainly climbed the learning curve, I'm not competent on this.
I have an RB750up. A discontinued model, but still very useful with current manufacturer FW and OS. I want the 4 PoE ports to run 3 nodes at a site. I have setup a few of these, but just as a basic bridge with no vlan anything. But I have a new case where I need WAN to get through.
The forum has a couple posts with useful info like this one: https://www.arednmesh.org/comment/12021#comment-12021

This is what I want to setup:
port1 - WAN
port2 - LAN
port3 - Node DtD
port4 - Node DtD
port5 - Node DtD

Following the other post, modifying a bit for my exact arrangement, I have this

/interface bridge
add name=bridge1 vlan-filtering=no

/interface bridge port
add bridge=bridge1 interface=ether1 pvid=1
add bridge=bridge1 interface=ether2 pvid=10
add bridge=bridge1 interface=ether3 pvid=2
add bridge=bridge1 interface=ether4 pvid=2
add bridge=bridge1 interface=ether5 pvid=10

/interface bridge vlan
add bridge=bridge1 tagged=ether5 untagged=ether1 vlan-ids=1
add bridge=bridge1 tagged=ether3,ether4,ether5 vlan-ids=2
add bridge=bridge1 untagged=ether2,ether5 vlan-ids=10

/interface bridge set bridge1 vlan-filtering=yes
 

This seems to be working! But, as soon as I do the last line and enable vlan-filtering on the bridge I can't connect to the router (using winbox, not even to the MAC address, wired to port2).
Then if I power cycle it (which also takes down the nodes, simulating a power outage) nothing comes back. I don't get a DHCP address on port2, none of the nodes are DtD linked. I have to reset the router configuration. I don't know what I'm doing wrong.

KD1HA
KD1HA's picture
You can simply use a dumb
You can simply use a dumb switch on port 5 using the AREDN configuration for your 3 nodes.
K6CCC
K6CCC's picture
Just to make sure I have the
Just to make sure I have the gameplan.  Confirm that this RB750 is operating under RouterOS and is NOT flashed for AREDN.  Assuming that is the case, what RouterOS version are you running on it?
I have several Mikrotik routers running RouterOS, but I don't run a bridge on any of them, so I may not be able to troubleshoot a ROS issue.

 
kg7kmv
Right, RouterOS FW 3.10 and 6
Right, RouterOS FW 3.10 and 6.49.15

This is what I think I need. I'm sure I can do it on a Netgear, but MikroTik nuances are defeating me.


K6CCC
K6CCC's picture
From what I am seeing here,
From what I am seeing here, you want the WAN and LAN connections from the AREDN network to be from the LiteBeam.  The other two AREDN nodes will only be DtD connected to each other and the LiteBeam.  That is a perfectly good setup.  As I said, I do not use a bridge in any of my RouterOS config, but I will attempt to verify your setup.

BTW, I would recommend doing the firmware update on that router.  Assuming you are using WinBox or Webfig for management, Select System > RouterBOARD.  At the bottom of the window will be the Current and Upgrade Firmware versions.  Select Upgrade.  That is quite fast and then yo will need to reboot.  System > Reboot
 
kg7kmv
I got my firmware and OS
I got my firmware and OS updated. Running the config I posted earlier, changing the bridge to pvid=10 and adding the DHCP client on bridge1, it works perfectly as I expect it to. Node on port 5 gets a WAN connection, DtD links to the other two nodes, and I can access with a laptop on port 2 (gets DHCP from LiteBeam, can access router management). I'm happy, excited, relived (I need to get this installed!)

BUT if I reboot or power cycle the router I lose everything. No WAN, no DtD, no laptop access, no DHCP. I've tried it on two different routers so it's not a hardware defect. I'm on the verge of using a dumb switch and another AREDN node with 2 ports (like a hAP lite) to get that dumb WAN connection.
K6CCC
K6CCC's picture
Are you using WinBox for the
Are you using WinBox for the RB750 configuration?  If yes, are you using Safe Mode?  Safe mode is designed to automatically revert back to the config prior to entering Safe Mode.  It is very useful if you lock yourself out with some config change.  However if you use Safe Mode, you have to make sure the revised config is saved as the actual config before exiting / rebooting or else it will revert.  Sounds like that is what is going on,.
kg7kmv
I had wondered that too. I
I had wondered that too. I don't think I'm in Safe Mode. I am using WinBox and the SafeMode button is not active. I've tried again and again.
1. factory reset
2. clear all configuration
3. load my configuration (I've modified it slightly to keep port 5 independent from the bridge to try to maintain a connection)
4. it works great, exactly how I need it it!
5. power cycle and I'm completely unable to access the router with WebFig, WinBox, any vlan. The lights come on but it's a communication brick.
6. go back to step 1.

I have asked on the MikroTik forum but kinda get the same thing there. Since I have to get this installed tomorrow I'll have to just go with a basic switch configuration and use another hAP to do the WAN connection. 

/interface bridge

add name=bridge1 pvid=10 vlan-filtering=yes

/interface list

add name=LAN

/interface wireless security-profiles

set [ find default=yes ] supplicant-identity=MikroTik

/interface bridge port

add bridge=bridge1 interface=ether1

add bridge=bridge1 interface=ether2 pvid=10

add bridge=bridge1 interface=ether3 pvid=2

add bridge=bridge1 interface=ether4 pvid=2

/ip neighbor discovery-settings

set discover-interface-list=!dynamic

/interface bridge vlan

add bridge=bridge1 tagged=ether2,ether3,ether4 untagged=bridge1 vlan-ids=2

add bridge=bridge1 untagged=ether2,ether3,ether4,bridge1 vlan-ids=10

add bridge=bridge1 tagged=ether2 untagged=ether1,bridge1 vlan-ids=1

/interface list member

add interface=ether5 list=LAN

/ip address

add address=192.168.88.1/24 interface=ether5 network=192.168.88.0

/ip dhcp-client

add disabled=no interface=bridge1

 

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