Network switch blocking UDP?
I have a client that is using Remote Desktop to access an application on a remote server. Users in one building can access the server and receive the connection status: "The connection to the remote computer is excellent and UDP is enabled." Users in the other building only receive this connection status: "The connection to the remote computer is excellent."
The two buildings are connected via a Cisco SG-200-50 switch and an HP Procurve switch. There is a LAG set up on the Cisco, which connects to an LACP on the Procurve. It is the users in the 2nd building, who are connected by the two switches, who do not receive the UDP connection. The users in the first building, who connect directly to the main Cisco switch, who get the full connection.
Any ideas on how to get UDP to propagate to the other users connected by the two switches?
60afc80c-2c65-4867-ba1c-b5c2f0feee96.png
The two buildings are connected via a Cisco SG-200-50 switch and an HP Procurve switch. There is a LAG set up on the Cisco, which connects to an LACP on the Procurve. It is the users in the 2nd building, who are connected by the two switches, who do not receive the UDP connection. The users in the first building, who connect directly to the main Cisco switch, who get the full connection.
Any ideas on how to get UDP to propagate to the other users connected by the two switches?
60afc80c-2c65-4867-ba1c-b5c2f0feee96.png
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Thanks, Joseph. That's good information. I don't think the HP is a Layer 3 switch, but I'll check it out.
They all use the same firewall. No other network devices between the computers. I'm on-site now and will check the other users connections to see if it's just specific workstations in building 2.
They all use the same firewall. No other network devices between the computers. I'm on-site now and will check the other users connections to see if it's just specific workstations in building 2.
Honestly, I wouldn't worry about it unless it's causing a problem. One way to check and see if UDP traffic is working is to install Wireshark, do a packet capture and check for UDP traffic. UDP 53 is DNS, so if you see that, then you're probably okay.
ASKER
It ended up not being a switch issue. Other computers on the same switch could get Remote Desktop with UDP, so not sure why two computers can't, but closing the issue.
https://blogs.msdn.microsoft.com/rds/2012/08/23/remotefx-for-wan-overview-of-intelligent-and-adaptive-transports-in-windows-8-and-windows-server-2012/
In any case, check your firewall settings (both on the clients and any network-based firewalls).