I received an e-mail from a concerned client in regards to speed of the network. This is something that the my client has lived with for some time, but since they hired a few new users, it has caused a somewhat notable degradation.
There is a T1 connection between the Hub and remote site.
Here is what I could drum up from some speed tests?
Download: 481,064 bps
Upload: 352,736 bps
RTT: 117 ms
MaxPause: 141 ms
Download: 476,208 bps
Upload: 251,536 bps
RTT: 156 ms
MaxPause: 163 ms
The quality of service is excellent, but the speed caps at 481 kbps.
The Hub site is a VPN tunnel to main site. Is there any investigation / recommendations we can provide?
Here is the config of the main site. I will submit the hub site when i get access to it. Also at this time, all I know is that they are experiencing network degration performance. I will try to shed more light.
THank you for your input and your patience.
By the way this is a 1604 cisco router...Here is the Show ver and the show run
Main# show ver
Cisco Internetwork Operating System Software
IOS (tm) 1600 Software (C1600-Y-L), Version 11.2(15a)P, P RELEASE SOFTWARE (fc1)
From your configuration I do not see any QOS configured on the rouer. SO your T-1 is using FIFO for its queuing. Also you need to show us a SHOW INTERFACE SERIAL0 command to allow us to see the specs on the T-1....
I am a little confused.. The configuration for the 1604 router shows no QOS configured on it, however your Show Interface command has Weighted Fair queuing configured on it. I see that you are also dropping alot of packets on your output. This means that you are over running your output buffers. You should look into setting up a priority queuing method for QOS. Also you state that the remote site is using a VPN and I again do not see any ecryption configurations on the router. Are they using some other device for the VPN tunnel (Say PIX or VPN concentrator)?? For performance issues involving a tunnel you may need to look at the type of applications that are going across the tunnel. If a TCP application then you may need to lower the MSS (Segment size) tranversing the tunnel. Keep in mind that encryption tunnels add overhead onto the frame and some intermediate routers and firewalls block the DF bit. So if your packet needs to be fragmented then the control mechanism (DF bit) for that will not pass the network and will be dropped by either a firewall. By lowering the MSS for your segments will lower the frame size and fragmentation will not be needed.... All these need to be considered.....Good Luck.....
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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