tools/mac-winbox feature not working

RouterOS Beginner Basics
1

Hello,

I am having issues the layer-2 mac-winbox management feature. I was working before I rearranged my topology.
I have searched the forum and have not found a solution. I also have done some tshooting with trying different MAC address (interfaces/Bridge/Ect) and have made numerous different combination of the tools/Mac-winbox and tools/mac-server.

the environment is:
old:
hyper-v untagled edge router ↔ CRS305 ↔ CRS305 ↔ host
new:
hyper-v untagled edge router ↔ CRS305 <–>host (the Untagled router is also bridging 2 other NIC that I put the other CRS305 and the other NIC is connected to a zyxel NWA210AX AP)

I plan to switch out the Untangled Hyper-V router with a Hyper-v CHR RouterOS for my edge. I would like to figure this out before I make the change.

Thank you all for your help in advance on this issue.

2

Reasons for MAC connectivity not working are numerous and without seeing actual configuration of CRS (the whole of it, not just parts you might think are relevant) we can only guess. So create text export of config and post it here between [__code] [/code] tags.

3

Thanks for the reply.

I have restored the config to Factory defaults multiple times to tshoot this issue.

below please find the Export config

# jul/13/2022 09:19:32 by RouterOS 7.3.1
# software id = KJEP-VUKW
#
# model = CRS305-1G-4S+
# serial number = <removed>
/interface bridge
add comment=defconf name=bridge
/interface list
add name=WAN
add name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip hotspot profile
set [ find default=yes ] html-directory=hotspot
/port
set 0 name=serial0
/interface bridge port
add bridge=bridge comment=defconf interface=ether1
add bridge=bridge comment=defconf interface=sfp-sfpplus1
add bridge=bridge comment=defconf interface=sfp-sfpplus2
add bridge=bridge comment=defconf interface=sfp-sfpplus3
add bridge=bridge comment=defconf interface=sfp-sfpplus4
/interface list member
add interface=ether1 list=WAN
add interface=sfp-sfpplus1 list=LAN
add interface=sfp-sfpplus2 list=LAN
add interface=sfp-sfpplus3 list=LAN
add interface=sfp-sfpplus4 list=LAN
/ip address
add address=192.168.1.100/24 comment=defconf interface=sfp-sfpplus1 network=\
    192.168.1.0
/ip dns
set servers=1.1.1.1
/system clock
set time-zone-name=America/New_York
/system identity
set name=CRS305-1
/system routerboard settings
set boot-os=router-os
/system swos
set allow-from-ports=p1,p2,p3,p4,p5,p6,p7 identity=Game static-ip-address=\
    192.168.1.100
4

/ip address
add address=192.168.1.100/24 comment=defconf interface=sfp-sfpplus1 network=
192.168.1.0

The IP address must be assigned on the Master interface, in your example it should be the Bridge interface itself…
Other than that i can’t seem to find another problem…
The Layer2 problems you mention most probably are caused by something else…

5

I moved the IP assignment from the interface to the bridge as suggested and did not fix the issue.

6

one thing to note. when connecting via IP address to this CRS305, the session Text Box is empty as compared to a healthy session i see a MAC or IP
Screenshot 2022-07-13 102845.png

7

Likewise Master interface (bridge in your case) has to be member of LAN interface list.

8

After some more Tshooting; the issue seems to be localized to my Windows 11 machine. I am able to connect to it via other computers (on the same Layer 2 topo) via MAC address.
I have disabled the Windows 11 Firewall and am still not connecting via MAC.

I have viewed the logs on the CRS305 and I see a session connecting and then immediately drop with no error or reason given other then session ended.

Also of note, I have spun up a CHR and I am able to connect to it via MAC from a laptop on the same layer 2 but from the Windows 11 machine, I am unable.
I have gone so far as to move ports on the CRS305 for this Window 11 machine and still see the same issue.

Again Layer 3 i have no issues at all as it connects via IP simply fine.

Not sure what is going on here…

9

Also of note, I have spun up a CHR and I am able to connect to it via MAC from a laptop on the same layer 2 but from the Windows 11 machine, I am unable.
I have gone so far as to move ports on the CRS305 for this Window 11 machine and still see the same issue.

Same here: Winbox-mac can not connect from a Windows 11 machine, but works as usual from Windows 10. Both from the self PC using the same NIC (dual boot).
Winbox-mac uses broadcast IP addresses (255.255.255.255) in L3 header, with the RB/CHR interface mac as dest-mac on L2.
Seems like Win11 has some different behavior regarding such special packets, making connections fail.

10

Not all PCs are the same in terms of hardware…
So, did you disable all the network cards, wired or wireless, all the Virtual adapters if any, and tested again ?

11

Yes on all this. still having issues. also made sure that the NIC with the only connection on it was on the same subnet and has a pingable IP