File server performance issues in ring topology layout

[Dusan Sladojevic]

Hello,

I would like to ask one question regarding performance issues of File server in a ring topology layout.
File server is connected to the first switch in a line.
Currently from the last two switches in a ring topology, when I download files from the File server I get the max speed of 20-30MBps.
From the other switches I get the speed of 60MBps.

We have a ring topology with 1st switch from above being WS-C3650-24PS,
and all the others being WS-C2960X-24PS-L.
All the switches have the same configuration.
Trunk ports that are connecting switches are configured like this:

 description xxx
 switchport mode trunk
 switchport nonegotiate
 load-interval 30
 spanning-tree guard loop

Server is connected to a port with configuration:

 description xxx 
 switchport access vlan 40
 switchport mode access
 spanning-tree portfast

Could the cause of these "slower speed" on last two switches be the ring topology? Because the File server is connected to the 1st switch in line?

[Dusan Sladojevic]

Hi,

Just to update this Discussion. I have blocked the 2nd optical cable from small rack to the main one.
After this optical cable was blocked, every switch in the network had full speed access to the Fileserver.
I will try in non-working hours to replace this second optical cable with copper. Still not sure if it is the problem with transceiver or the optical cable connecting these two rack rooms..

Thanks all for help!