Hi. I have currently setup my router.
CRS312-4C+8XG-RM To be exact. I have configured it in quickset and my workstations are not grabbing the correct IP from the router. The workstations actually bypassed the mikrotik and grabbed the ISP router address instead.

DHCP enabled in Mikrotik router mode.

Sounds like you configured / connected it up as a switch. Which CRS's are anyway.

Post the exported config here and someone will try and assist

Sounds like you configured / connected it up as a switch. Which CRS's are anyway.

Post the exported config here and someone will try and assist

# jan/02/1970 00:22:48 by RouterOS 6.44.4
# software id = 8AUA-YJN6
#
# model = CRS312-4C+8XG
# serial number = BF750AF0A772
/interface bridge
add admin-mac=74:4D:28:D7:E9:33 auto-mac=no 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=flash/hotspot
/ip pool
add name=dhcp ranges=192.168.88.3-192.168.88.254
/ip dhcp-server
add address-pool=dhcp disabled=no interface=bridge name=dhcp1
/interface bridge port
add bridge=bridge comment=defconf interface=combo1
add bridge=bridge comment=defconf interface=combo2
add bridge=bridge comment=defconf interface=combo3
add bridge=bridge comment=defconf interface=combo4
add bridge=bridge comment=defconf interface=ether1
add bridge=bridge comment=defconf interface=ether2
add bridge=bridge comment=defconf interface=ether3
add bridge=bridge comment=defconf interface=ether4
add bridge=bridge comment=defconf interface=ether5
add bridge=bridge comment=defconf interface=ether6
add bridge=bridge comment=defconf interface=ether7
add bridge=bridge comment=defconf interface=ether8
add bridge=bridge comment=defconf disabled=yes interface=ether9
/interface list member
add interface=ether9 list=WAN
add interface=bridge list=LAN
/ip address
add address=192.168.88.1/24 interface=ether1 network=192.168.88.0
/ip dhcp-client
add dhcp-options=hostname,clientid disabled=no interface=ether9
/ip dhcp-server network
add address=192.168.88.0/24 gateway=192.168.88.1 netmask=24
/ip firewall nat
add action=masquerade chain=srcnat out-interface-list=WAN
/system routerboard settings
set boot-os=router-os

For configure your CRS use winbox, quickset have many problems.

For configure your CRS use winbox, quickset have many problems.

I am using winbox to configure. I still cant get around the issue.

For configure your CRS use winbox, quickset have many problems.

I need to set it as a router, then I might be able to solve this issue.

Here is my problem.
My internet connection is 500 down 500 up.

Configured manually on IMac using a CalDigit connect 10gb adapter

1GBps Setting on a 10gbe adapter = 500 down 500 up
2.5GBps Setting on a 10gbe adapter = 500 down 150 up
5GBps = 500 down 100 up
10GBps = 500 down 78 up

Automatic on IMac using CalDigit connect 10gb adapter

10GBps = 500 down 78 up

Have anyone faced this problem before? Thanks in advance!

The WAN interface (ether9) must not be part of the bridge config, must be totally removed
IP address for LAN should be assigned to bridge interface, not sub/slave interface ether1

The WAN interface (ether9) must not be part of the bridge config, must be totally removed
IP address for LAN should be assigned to bridge interface, not sub/slave interface ether1

I am too having this issue. How do I remove ether9 from the bridge config? I am super new to Mikrotik swtiches and having problem setting this switch as a router instead of just a switch.

In Winbox:

Menu->Bridge->Ports
Select interface to be removed and click on "-" minus sign

In CLI:
/interface bridge port remove [find where interface="ether9"]

In Winbox:

Menu->Bridge->Ports
Select interface to be removed and click on "-" minus sign

In CLI:
/interface bridge port remove [find where interface="ether9"]

Thanks! So far sorted with internet. But there is one problem

Currently my internet is limited to 300mbps up down.
When I bypass the Mikrotik, I get 800mbps down 600 up. This is my original speed. Any ideas?

Thanks!

It's a switch, not a router, so it has only very limited routing capabilities:
https://mikrotik.com/product/crs312_4c_ ... estresults

It's a switch, not a router, so it has only very limited routing capabilities:
https://mikrotik.com/product/crs312_4c_ ... estresults

Which means I can never get my full internet speed with this switch?

But when it was on bridge mode, I was getting a good 500 up and down.

If you use it as a router - no, you can't.

But you will get full internet speed, if you use it as a switch.
And some router that can handle 800/600 connection - as a router.

If you use it as a router - no, you can't.

But you will get full internet speed, if you use it as a switch.
And some router that can handle 800/600 connection - as a router.

How can I use it as a switch only? Which means the IP address follows my current router.

Thanks in advance! Sorry I am still learning.

How can I use it as a switch only? Which means the IP address follows my current router.

I don't really understand the question, but I guess yes, you can use your current router for routing, nat, firewall, dhcp server, dns etc.
And CRS will do switching between LAN devices on speeds up to 10Gb/s.
And also between LAN and the router.

How can I use it as a switch only? Which means the IP address follows my current router.

I don't really understand the question, but I guess yes, you can use your current router for routing, nat, firewall, dhcp server, dns etc.
And CRS will do switching between LAN devices on speeds up to 10Gb/s.
And also between LAN and the router.

Sorry for being unclear. When the Mikrotik is in bridge mode. I don’t get full internet speed. When it’s on router mode. It’s capped at 300 up down.

So basically. I am not getting full internet speeds on the Mikrotik. Local 10GBE is fine for now. So I was thinking if I were to revert it back to a bridge. Can that help? My original internet speed is 800 up down.

When in simple "bridge mode" (all ports in one bridge, no vlans etc.) the bottleneck will be not the CRS but rather your router.

When in simple "bridge mode" (all ports in one bridge, no vlans etc.) the bottleneck will be not the CRS but rather your router.

Thanks.

When in bridge mode, its abit funny. If I am running 1GBE I get 800 up down. If I set the network adapter to 10GBE, I get a drop in speed. 130 up down.

I dont have an explanation for this. Did you ever encounter such issues before?

Thanks!

That sounds weird.
Do you switch to fixed rates both on client and the switch?
If both ends are set to auto negotiation, what rate is actually chosen?

That sounds weird.
Do you switch to fixed rates both on client and the switch?
If both ends are set to auto negotiation, what rate is actually chosen?

If the adapter is set to auto nego, it goes to 10GBE. Until now I am still figuring out this problem.
10GBE local speeds work fine. Just the internet part is driving me crazy.

hi all,

do you mind sharing your working config if your crs312? as i have a working crs305 running as my home router, it has only 5 port and much more easier to setup than a crs312.

i have try to setup my crs312 as my new router at home to replace the 305. my isp can see my eth1 mac address but cannot get the wan ip from my isp but i can see it from the address(ip-address list).

i have default the crs 312
use quick set to port eth1 to automatic
set my lan ip 192.1682.1.1/24
dhcp range 192.168.1.10-192.168.1.250
updated to 6.47.4 stable
remove eth 1 and eth 9 from bridge port - i am guessing eth 9 is the 100mb mgmt port? eth1 is the first rj45 port right?

should i create an entry in address ?
1. eth1 for as the wan port to connect to the isp modem
2. bridge for the lan ip range

i am just following the steps setting up a crs 305 to crs 312. just puzzle with the wan port setup. what is it not picking up the wan ip from the modem.

Thank you.