argent --- mikrotik to cisco ?

RouterOS Beginner Basics
1

I have MK OS 3.22 connected to cisco 1841 router, they was working very good from 3 months.
from 4 days the server stops and the router also, when I disable Internal interface of the MK
the router work again, and when I enable it the router hung

Please help very argent

2

If it was working fine for three months then something has changed and if you haven’t changed anything then it sounds like bad hardware.

Perhaps you have a bad ethernet port either on the Cisco or the Mikrotik router.

Try moving to a different ethernet port first on the Cisco, then on the Mikrotik.

You didn’t say what hardware you are running ROS on but I assume it is a router or firewall device with more than one ethernet port.

Tom

3

First off all thanks very much as no one care except you

I try to run my MK on Another router works in another department the internet
work very well from it.
And when I try my router whitch connected to MK by connect it direct to my pc it work vey good.

my router is cisco 1841

this means the router is work very good alone
MK is work very good on another router

what is the problem

4

I might be the only one who answered because you didn’t give us enough details to help solve your problem. That is why I am asking so many question, to help get enough information to help with your problem. As you give more details, more people will take an interest and help.

Is the Mikrotik a RouterBoard (if so what model) or is this an x86 PC router?

Since the connection between the two devices is ethernet, look at that connection closely.

Do you have a duplex or speed mismatch? Are both set to auto discover or are they hard coded to duplex and speed? Both devices must match.

Have you tried another port on the Mikrotik router?

Can you describe the failure in greater detail? Cisco has many commands and will show many details of your problem.

show interface FastEthernet0/1 or show interface FastEthernet0/0

(use the active interface connected to Mikrotik device) might give us some insight.

show logging

might tell you what is happening during the failure.

One more thing. I would upgrade to ROS 3.30 in case there was a bug in 3.22 that is causing your problem.

Tom

5

Thanks very much I solve the problem and for others who get the same problem
here is some details for my problem and solution

I have cisco DSL router 1841 from the router one out line connected to one interface
of MK Server ( normal pc ) 3.22 the other interface of the MK is connected to my
network to provide internet to 400 users.

One day Internet stops I try every thing no way, last thing I replaced the server with
another machine but no way.

Last thing today I start to check switchs and I notice that when I disconnect a
specific switch the internet come back.

I check that swtich port by port Finally I discovered that there is one pc when I disconnect
it from the switch the internet works very much.

I disconnect the pc and send it for maintence.

Thanks for help
Eng. Amgad