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Network Speed very slow when using Cisco Anyconnect inside HyperV VM

bssindiana
Level 1
Level 1

‎04-11-2022 01:32 AM

I have Host OS as Windows 10.

I have created Host Virtual Machine on HyperV. The host OS is Oracle Linux 8.

 

I have installed Cisco Anyconnect inside Host VM. 

Now when I am trying to connect to VPN using Cisco Anyconenct in Guest VM, then the Internet speed inside in HyperV Guest VM becomes very slow.

 

Kind Note: I am using default Switch of HyperV Network Adapter

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4 Replies 4

Mike.Cifelli
VIP Alumni
VIP Alumni

‎04-11-2022 05:01 AM

My first place to look would be at the vm settings.  Possible that resources are low so when running/using AnyConnect system resources are bogged down.

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bssindiana
Level 1
Level 1
In response to Mike.Cifelli

‎04-25-2022 12:55 AM

I guess that problem is not there. Reason is :

  1. When I am in Guest OS and VPN is not connected from inside the Guest OS ( via Cisco Anyconnected ) then speed in Good ( 20-40 MBPS). Quite acceptable
  2. When I am in Guest OS and VPN is connected from inside Guest OS  ( via Cisco Anyconnected ) then speed is almost Zero.

However :

3. When I am in Host OS and VPN is not connected from inside the Guest OS ( via Cisco Anyconnected ) then speed in Good (  20-40 MBPS). As expected

4. When I am in Host OS and VPN is connected from inside Guest OS  ( via Cisco Anyconnected ) then speed is also OK ( 15-20 MBPS). Expected and Ok.

 

 

I am specifically concerned for point 2) which is my concern.

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balaji.bandi
Hall of Fame
Hall of Fame

‎04-11-2022 05:06 AM

with out VPN is that ok ? what speeds are expected before and after ?

 

BB

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bssindiana
Level 1
Level 1
In response to balaji.bandi

‎04-25-2022 12:56 AM

I guess that problem is not there. Reason is :

  1. When I am in Guest OS and VPN is not connected from inside the Guest OS ( via Cisco Anyconnected ) then speed in Good ( 20-40 MBPS). Quite acceptable
  2. When I am in Guest OS and VPN is connected from inside Guest OS  ( via Cisco Anyconnected ) then speed is almost Zero.

However :

3. When I am in Host OS and VPN is not connected from inside the Guest OS ( via Cisco Anyconnected ) then speed in Good (  20-40 MBPS). As expected

4. When I am in Host OS and VPN is connected from inside Guest OS  ( via Cisco Anyconnected ) then speed is also OK ( 15-20 MBPS). Expected and Ok.

0 Helpful
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