PHead2
Technical User
- Dec 18, 2001
- 222
I'm having an issue when enabling QoS on a set of 3750 switches:
With QoS enabled traffic is very slow when a client with a 100BaseT connection pulls data off of a server with a gigabit connection and the server is on a different subnet(VLAN) than the client. The is no (noticeable) effect on speed if the client uploads a file to the same server(s). There is no problem if the client is on the same subnet as the server (regardless of the connection speeds) or if the client is on a different subnet but also has a gigabit connection to the switch stack.
I have tried every combination of different subnets (there are 5 VLANs), servers, NICs, etc. using quite a few different boxes as servers and clients. The problem only comes up when the 100BaseT box is downloading from a 1000BaseT box on a different subent...
I am totally stumped on this, anyone have any ideas?
With QoS enabled traffic is very slow when a client with a 100BaseT connection pulls data off of a server with a gigabit connection and the server is on a different subnet(VLAN) than the client. The is no (noticeable) effect on speed if the client uploads a file to the same server(s). There is no problem if the client is on the same subnet as the server (regardless of the connection speeds) or if the client is on a different subnet but also has a gigabit connection to the switch stack.
I have tried every combination of different subnets (there are 5 VLANs), servers, NICs, etc. using quite a few different boxes as servers and clients. The problem only comes up when the 100BaseT box is downloading from a 1000BaseT box on a different subent...
I am totally stumped on this, anyone have any ideas?