Gigabit ports on RB2011 not responding

Hardware MikroTik hardware general
1

Hi!

I have bought a RB2011UAS-2HND-IN, and I have understood that this is a second revision of this product (as the power connector is accessible from the outside of the unit). I have upgraded the unit to ROS version 6.5, but the problem existed both before and after the upgrade.

All of this can be reproduced with the standard configuration that the unit was shipped with.

When I connect my computer to a GigE port, the interface behaves as expected: the link-diod lights up, both interfaces negotiates to 1000M, et cetera.

Howerver, I do not get a DHCP-address from the router. If I set a static address on the computer and ping 192.168.88.1, the request times out - except a couple that tells me the the host could not be reached.

I am able to connect with DHCP as expected on a 100-port.

The unit is not able to get any DHCP address on the WAN-port (eth1, a gigE-port).
When looking at the DHCP-logs on both the mikrotik and my DHCP-server (a D-LINK DIR-600 wireless router that I’m going to replace with this RB2011) I find this:

RB2011:

Jan/02/1970 00:19:46 dhcp,debug,packet dhcp-client on ether1-gateway sending discover with id 3671700895 to 255.255.255.255
Jan/02/1970 00:19:46 dhcp,debug,packet     secs = 52
Jan/02/1970 00:19:46 dhcp,debug,packet     ciaddr = 0.0.0.0
Jan/02/1970 00:19:46 dhcp,debug,packet     chaddr = D4:CA:6D:D8:50:31
Jan/02/1970 00:19:46 dhcp,debug,packet     Msg-Type = discover
Jan/02/1970 00:19:46 dhcp,debug,packet     Parameter-List = Subnet-Mask,Classless-Route,Router,Static-Route,Domain-Server,NTP-Server
Jan/02/1970 00:19:46 dhcp,debug,packet     Host-Name = "MikroTik"
Jan/02/1970 00:19:46 dhcp,debug,packet     Client-Id = 01-D4-CA-6D-D8-50-31
Jan/02/1970 00:19:52 dhcp,debug,packet dhcp-client on ether1-gateway sending discover with id 3671700895 to 255.255.255.255
Jan/02/1970 00:19:52 dhcp,debug,packet     secs = 58
Jan/02/1970 00:19:52 dhcp,debug,packet     ciaddr = 0.0.0.0
Jan/02/1970 00:19:52 dhcp,debug,packet     chaddr = D4:CA:6D:D8:50:31
Jan/02/1970 00:19:52 dhcp,debug,packet     Msg-Type = discover
Jan/02/1970 00:19:52 dhcp,debug,packet     Parameter-List = Subnet-Mask,Classless-Route,Router,Static-Route,Domain-Server,NTP-Server
Jan/02/1970 00:19:52 dhcp,debug,packet     Host-Name = "MikroTik"
Jan/02/1970 00:19:52 dhcp,debug,packet     Client-Id = 01-D4-CA-6D-D8-50-31
Jan/02/1970 00:19:56 dhcp,debug,packet dhcp-client on ether1-gateway sending discover with id 3671700895 to 255.255.255.255
Jan/02/1970 00:19:56 dhcp,debug,packet     secs = 63
Jan/02/1970 00:19:56 dhcp,debug,packet     ciaddr = 0.0.0.0
Jan/02/1970 00:19:56 dhcp,debug,packet     chaddr = D4:CA:6D:D8:50:31
Jan/02/1970 00:19:56 dhcp,debug,packet     Msg-Type = discover
Jan/02/1970 00:19:56 dhcp,debug,packet     Parameter-List = Subnet-Mask,Classless-Route,Router,Static-Route,Domain-Server,NTP-Server
Jan/02/1970 00:19:56 dhcp,debug,packet     Host-Name = "MikroTik"
Jan/02/1970 00:19:56 dhcp,debug,packet     Client-Id = 01-D4-CA-6D-D8-50-31

D-LINK:

Mon Oct 21 15:30:05 2013 	DHCP: Server sending OFFER of 192.168.0.102.
Mon Oct 21 15:30:05 2013 	DHCP: Server receive DISCOVER from d4:ca:6d:d8:50:31.
Mon Oct 21 15:30:03 2013 	DHCP: Server sending OFFER of 192.168.0.102.
Mon Oct 21 15:30:03 2013 	DHCP: Server receive DISCOVER from d4:ca:6d:d8:50:31.
Mon Oct 21 15:29:57 2013 	DHCP: Server sending OFFER of 192.168.0.102.
Mon Oct 21 15:29:57 2013 	DHCP: Server receive DISCOVER from d4:ca:6d:d8:50:31.

Seems like the RB2011 is requesting an address, the D-link is responding with one, but the RB2011 is not getting the offer.

I have tried to disable all firewall rules, but that didn’t help.

I also tried putting static IP:s on two gigE-ports (4 and 5), removed them from the bridge, and connected a short piece of cable between them. I was not able to ping one port from the other.

Sorry for the long post. Any thoughts?

2

sounds like your gigabit ports are not part of the same network as the fast ethernet ports and the dhcpserver is just sitting in the fast ethernet part. as this are 2 different switch-chips you have at least to bridge them together.

can you show us your dhcp server, interface and switch config ?!

3

As I mentioned, this is reproducable with the default configuration. And it doesn’t explain why the two physically connected GigE-ports couldn’t ping each other…

Anyway, I’m attaching a export of my config.

/interface bridge port
add bridge=bridge-local interface=ether2
add bridge=bridge-local interface=ether3
add bridge=bridge-local interface=ether4
add bridge=bridge-local interface=ether5
add bridge=bridge-local interface=ether6-master-local
add bridge=bridge-local interface=wlan1
backup.rsc (5.53 KB)

4

GSTN,
Your configuration has IP 192.168.88.1 set on “wlan1” interface, however by default it should be set on “bridge-local” interface to make DHCP server work on all Ethernet ports.

5

Strange. I must have posted an old config. This is a export I just did. 192.168.88.1 is set to bridge-local. wlan1 should also be disabled.

Is it normal that if I connect my computer on port 8, whenever I plug/unplug anything on the gigabit-ports, my winbox session is disconnected?
backup131023.rsc (4.82 KB)

6

So, should I RMA this, maybe?

7

I have a very similar problem with my 2011.
Seems like the gig ports do not participate in the bridge properly.
When I slave the gig ports to eth1, devices on those ports can ping each other fine.
When I unslave them, and configure them into local bridge, then they cannot see each other.
At no point can the gig ports see the local-bridge IP address.
100mb ports cannot see any devices on any of the gig ports.
wlan devices can see 100mb port devices and the local-bridge IP.

Have I done something silly?

TIA
Steven

8

I’m gonna RMA this thing.
Can’t even use winbox on a pc connected to one of the gigabit ports, and netinstall doesn’t work from those ports either.

9

Sinbad,
please upgrade the board to the latest version and also do a system reset configuration and then keep the default configuration when you first login into the board.
Then check if it is working.
Here is the info on the default configuration:
http://wiki.mikrotik.com/wiki/Manual:Default_Configurations

10

I tried all of this.
The 5 gig ether ports were not accessible by the routerboard at all. Replacement hardware arrived and is working perfectly. Thanks for your input though, it’s appreciated! :slight_smile: