Mikrotik x Mimosa - Can't Ping Other Side

RouterOS General
1

Hi,

I’ve made a test in my office today:

The topology was this way:

[RB2011 01 - eth4 Gigabit] — [Mimosa B5C AP] ~~~~~~~~~~~~~~~~~~ [Mimosa B5C Station] — [RB2011 02 - eth5 Gigabit]
— copper link - cat5e


RB2011 01 ==== 172.16.200.169/29
B5C AP ====== 172.16.200.170/29
B5C Station === 172.16.200.171/29
RB2011 02 ==== 172.16.200.172/29

Then I noticed the following issue:
* RB2011 01 ARP table have B5C AP and Station correctly, but has RB2011 02 in **00:00:00:00:00:00** format.

This way, I can't ping, make bandwidth tests and establish an OSPF peer.
What can I do to debug/test/discover what is happening?

I also tried to make static ARP, but it didn't work too.

![](https://i.imgsafe.org/9867c6f383.png)
2

The ARP entry only mean it didn’t receive a arp reply. Can the RB2011 ping the Mimosa in station mode ? Seem like a connection problem between the two.

3

I don’t know why, but now they are working.

I simply have inverted the RB2011(s)
RB2011 01 (v6.34.4) ----> <---- RB 2011 02 (6.23)

Maybe the version, or simply because I rebooted everything. :confused: