Hello everybody,
I’m pretty new to Mikrotik (and totally new to this Forum) and I ask this in the beginners section because of that, though I’m not new to networks… Since now I have installed 4 different Mikrotik Routers (1 at home, 3 at customers) and all worked fine.
Now at one customer I have a huge problem: Every 3-4 days the Router “crashes”. I cannot log in, neither from internal LAN, external or from an extra service Port I left open.
I say “it crashes” because I don’t know what happens, if you plug out the Router, put it back in, everything works fine again. I checked the whole configuration and I don’t see what could be wrong, during runtime there are absolutely no errors.
One hint I have is that when it “crashes” the LEDs indicate a very high traffic load, both on the Router and on the attached switch, which is gone after restart. Checked for loops, too but there are none. And I believe that wouldn’t affect ALL ports on the Mikrotik in different LANs, would it?
The Router is being used since half a year or so but the problem started occuring when the customer started using VOIP (though it’s just 2-4 parallel calls at a time) and changed the provider (means new modem). And during the time I upgraded to 6.10 and installed a new Switch, so sadly that’s 4 possibilities.
I pretty much think it has something to do with the Upgrade to 6.10 or the VOIP because the Switch is pretty standard and we don’t use VLAN (I had an error once with GBit Ports and a Level1 Switch with VLAN) and other customers and I got the same provider (and the same modem).
Basic information about the configuration:
- ether1 goes to WAN (including src-nat)
- ether2 goes to LAN
- ether10 is only for management purposes with a different net than ether2
Basic info about what the Mikrotik does:
- dst-nat for internal servers (was setup before)
- VPN over L2TP/IPsec (this was already used before the changes and worked flawlessly all the time)
- Firewall rules but everything pretty basic (allowing related/established, allowing specific ports/connections and blocking the rest, also port knocking for external management - this also was setup before the provider changed and worked fine)
- DHCP-Servers for ether2 and ether10 with different pools (were setup before, too)
I got no clue here, do you have any hints?
Greetings
Broco
Edit: Typo in title (embarrassing).