Throughput probel without VPN

[Carmine De Rienzo]

Hi ,

I have the following problem:

In our Network we have the following architecture:

Server -- Switch -- Firewall -- Router (2911) -- (Gigethernet -STM1 Media Converter) -- LINK 100 Mbits --- (STM1-GigEthernet Media Converter) -- Router (2911)-- Firewall -- Switch -- Server

Between the Routers there is a VPN IPSEC!

When the VPN is configured and applied the Throughput is good, when we cut the vpn the throughput between the server is bad. The difference is 60 Mbits with VPN and 10 Mbits without VPN.

The link have a RTT about 280 ms

Where and How is it possible to investigate to discover the problem ?

Let me know

Thanks

Carmine

[Deepak Kumar]

Hi,

Can you give us some more details:

1. Where have you applied NATing?

2. Is there any link redundancy between both routers?

3. What are the minimum link bandwidth and MTU on all interfaces?

4. Which services are activated on the Router and Firewall as IPS/firewall etc?

Regards,

Deepak Kumar

[Carmine De Rienzo]

. Where have you applied NATing? I' have not applied Nating

2. Is there any link redundancy between both routers? No

3. What are the minimum link bandwidth and MTU on all interfaces?

Inside the bandwidht is 1 Gigabit and MTU is 1500

4. Which services are activated on the Router and Firewall as IPS/firewall etc? The activated service is only

Static Routing. We have not IPS active and the VPN is only between the two routers.

[Deepak Kumar]

Hi,

Can you share both routers configuration and server to server tracert output along with below output:

R1 wan port:

sho interface gig (x/x)

R2 wan port:

sho interface gig (x/x)

Regards,

Deepak Kumar