RB3011UiAS-RM DHCP on ether6-ether10

RouterOS Beginner Basics
1

Hi everyone.
I just buy mikrotik RB3011UiAS-RM and have a problem.
After power up - device proposed me standard configuration - ok, i agreed with this.
I change mac address (for ISP) on ether1, get ip from ISP and internet work fine for ports ether2-ether5.
But clients on ports ether6-ether10 did not receive IP address via DHCP.
If i swap patchcord with any 2-5 port - client get IP and work with internet.
After reading manual i check settings bridge-local and DHCP server - every one as must be.
I try reset configuration without “first boot script” and step-by-step do all necessary actions - set master-slave ports; create bridge-local with master ports; assign address for bridge-local; create dhcp server for interface bridge-local.
Anyway ports ether2-ether5 receive IP via DHCP, ports ether6-ether10 not :frowning:

What am I doing wrong? Or, may be its hardware problem and i must return to the shop?

2

If I’m not mistaking - in RB3011 default config ports ether6-ether10 are not included into the bridge. Or maybe these ports are in separate bridge.

What you need is to add master port of that group to the same bridge as the first group.

Bridge → Ports → Add
Interface: ether6
Bridge: bridge

and click OK

This should help.

3

i did master port ether2 for ether3-ether5 and ether6 for ether7-ether10
then i add ether2 and ether6 into bridge-local
No effect. DHCP not work on ether6-ether10

I try connect with patchcord ether5-ether6 - no DHCP on switch2 :frowning:

4

Which RouterOS version do you use?
Do you have SFP module installed in SFP1 ?
Only DHCP have a problem, or manual configured IP does not work as well?

5

RouterOS version 6.35.2 (autoupgrade via system/auto upgrade)
No, SFP not connected, ISP on ether1

Manualy configured IP not work - received 0 packets (patchcord on 2-5 port work well)
And, when manually configured address I got known issue “flapping” on 6-10 port

But! When I connect ether3-other (external) 100Mb switch-port ether8 (or erther6-ether10) I receive address via DHCP on any other port 6-10!!!

6

SOLVED! :slight_smile:

In interface bridge options clear field “Admin. MAC Address”
By default it was same as MAC address bridge.
DHCP on switch2 work after that.

And gone seldom warning in Log “interface, warning ether2-master: bridge port received packet with own address as source address (here_is_my_MAC), probably loop”

Thanks all for help! :slight_smile: