Hi;

Can some one help me solve my problem.
this is network topology:





Some PCs are connected to CRS ports.
no need for VLAN all network connected devices are in the same vlan.

I've connected CRS and CSS without configuring CRS device. Only default configuration and IP address change.
All work well; but after 3 or 4 hours any network can access to internet and I can not connect to any switch configuration interface.
but all connected device reply correctly to ping command (ping works).

what's wrong in this configuration

have a simillar problem .... :-/
did you manage to get it work ?

what's wrong in this configuration

Unless you post it, we won't be able to know... (already having the diagram is a huge step towards solving this, but not enough)

FYI: SwOS 2.3 has been released, see viewtopic.php?f=21&t=122214

SwOS version 2.3 released
http://www.mikrotik.com/download

What's new in v2.3:

*) fixed CRS317: make 10G links more stable;
*) fixed "Allow From VLAN" on untagged packets with correct default vlan id;
*) LACP: fixed unstable aggregate link problem when partner had short retransmit timer;
*) CSS326 & CRS317: made 1Gb fiber SFP module work with auto negotiation;
*) CSS106: do not VLAN tag RSTP packets;

HI;

I will try this new firmware and write you back.

Hi;

I tested the new release but it did not solve the problem.
pleased find below network topology.


CRS configuration

CSS configuration Bellow


This is the problem:
When I connect fiber to Mikrotik switches and make a bridge with existing dlink switches all PC connected to dlink switches everything work fine. But when I connect PC to switch 1 and switch 2 network drops. pings respond correctly but no application is working: internet access, exchange, accounting, etc. And I can not access to switches management interface.

pleased can someone help me solve this problem.

Hi;

Based on my post above. I bought 3 css326 that I can not use on my network topology. Do I conclude that it is not working properly.

Thanks.