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Lease line bandwidth requirement needed for per XenDesktop user connecting externally


Mustafa Ahmed

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Hello Experts,

 

We have a citrix VDI environment and have published Xen Desktop to our users, so past one week we had got lot's of complain from our external users regarding an performance issue on VDI that users are facing too much delay while click anything on VDI and not able to do the teams/jabber call and there is a huge disturbance & delay in voice/vedio call.

 

Based on the issue we have checked that user connecting externally is having huge intermediate latency from client network to gateway as shown in below logs during handshake which result to packet drops and causing performance issue on VDI.

 

NetScaler Logs result

 

Jun  8 17:23:44 <local0.debug> 172.29.29.181 06/08/2021:13:23:44 GMT rgauhnxslr01 0-PPE-1 : default SSLLOG SSL_HANDSHAKE_SUCCESS 2030452 0 :  SPCBId 165795 - ClientIP 217.164.33.151 - ClientPort 60678 - VserverServiceIP x.x.x.x.x - VserverServicePort 443 - ClientVersion TLSv1.2 - CipherSuite "AES-256-CBC-SHA TLSv1.2 Non-Export 256-bit" - Session New  - HandshakeTime 270 ms

Jun  8 17:23:46 <local0.debug> 172.29.29.181 06/08/2021:13:23:46 GMT rgauhnxslr01 0-PPE-2 : default SSLLOG SSL_HANDSHAKE_SUCCESS 2221200 0 :  SPCBId 160909 - ClientIP 217.164.33.151 - ClientPort 60680 - VserverServiceIP x.x.x.x.x - VserverServicePort 443 - ClientVersion TLSv1.2 - CipherSuite "AES-256-CBC-SHA TLSv1.2 Non-Export 256-bit" - Session New  - HandshakeTime 1901 ms

Jun  8 17:38:49 <local0.debug> 172.29.29.181 06/08/2021:13:38:49 GMT rgauhnxslr01 0-PPE-2 : default SSLLOG SSL_HANDSHAKE_SUCCESS 2223174 0 :  SPCBId 161011 - ClientIP 217.164.33.151 - ClientPort 49681 - VserverServiceIP x.x.x.x.x - VserverServicePort 443 - ClientVersion TLSv1.2 - CipherSuite "AES-256-CBC-SHA TLSv1.2 Non-Export 256-bit" - Session New  - HandshakeTime 1251 ms

Jun  8 17:38:50 <local0.debug> 172.29.29.181 06/08/2021:13:38:50 GMT rgauhnxslr01 0-PPE-1 : default SSLLOG SSL_HANDSHAKE_SUCCESS 2032250 0 :  SPCBId 165886 - ClientIP 217.164.33.151 - ClientPort 51048 - VserverServiceIP x.x.x.x.x - VserverServicePort 443 - ClientVersion TLSv1.2 - CipherSuite "AES-256-CBC-SHA TLSv1.2 Non-Export 256-bit" - Session New  - HandshakeTime 710 ms

 

To dig more, we have involved our network team to check our IDA bandwidth utilization for the week day and as per their analysis the utilization was 100% for the VDI traffic, IDA utilization attached.

 

So want to understand from you experts that what will be bandwidth requirement needed for per XenDesktop user ? to size my IDA/lease line link.

 

Application installed on XenDesktop are below.

 

  1. M365 Apps
  2. Microsoft Team
  3. Cisco Jabber

 

 

 

Regards,

Khalid Shaikh

 

 

 

 

 

IDA Utilization.jpg

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