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cmatchettFlag for United Kingdom of Great Britain and Northern Ireland

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Network Switches Advice


Are you all well?  I would like to get some of your thoughts on internal LAN switches and what you think would be the best approach.

You have the following equipment in your Internal LAN at site 2:

25 x Thin Clients (NIC Speed: 100MB)
1 x Physical Server (NIC Speed: 1000MB)
1 x 100 MB switch

25 thin clients are configured for RDP that point to the physical server that is configured as an RD Session Host (Terminal Server).

Users then use Remote Desktop Connection on the Server to connect to a RD Session Host Farm in Site 1.  The RD Session Host Server at site 2 and the RD Session host Farm in site 1 will both be running server 2012, which will give the WAN optimization features of server 2012.  These are:

User Datagram Protocol (UDP): RDP chooses between TCP and UDP transports, depending on the content type and connection quality. When Remote Desktop is enabled on a computer, UDP for port 3389 is automatically enabled in Windows Firewall. For enhanced performance, verify that this port is enabled on your network.

Forward error correction (FEC): RDP also supports FEC. The server sends redundant data across the network to recover quickly from packet loss without requiring retransmission, even over lossy networks.

Network auto-detect: RDP detects end-to-end network speed by measuring latency, maximum bandwidth, and packet loss and then adjusts the type of connection and the data transfer based on the available bandwidth.

Dynamic transport detection: RDP uses dynamic transport detection to select the appropriate transport to communicate with the client. The system first tries using UDP as the transport mechanism. If that fails, it automatically switches to TCP, using the most appropriate transport to achieve the recommended user experience.

The internal LAN speed each site is as follows:

Site 2 : 100MB
Site 1: 1000MB

The internet connection at each site is as follows:

Site 2 : 2MB
Site 1: 100MB

There is a tight a budget for the project i am working on but in order to get the best result, I would have thought all internal LANs should be operating at a minimum of a Gigabyte.

Thank you in advance.
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Neil Russell
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Yea, that i undestand.  As i start to introduce equipment at site 2 with gigabyte nics, i should upgrade the switch also?  

Would a Gigabyte switch handle the traffic better than the 100mb switch?  Do gigabyte switches have features that allow efficient management of traffic and so on?

Even though the link is 2mb, the devices recieveing and sending the data would need to be the best configuration possible?  this would give the best result?
The "Best" result is limited in ALL cases by the "Smallest" pipe. You cant pour 10 gallons through a 1 inch hose pipe a second.

If your intersite traffic is bound to 2 Meg AND your primary traffic is via that link then having GigaBit switchws and Gigabit to the desktop in the "Hope" of improving performance is a waste of time and money I am afraid.