nanog mailing list archives
Re: downloading speed
From: Jay Hennigan <jay () west net>
Date: Fri, 17 Apr 2009 16:59:34 -0700
chandrashakher pawar wrote:
No errors on the interface. none of our customer on this router has complait us this issue i have changed this to "negotiation auto" as suggested by one of our member. tommorow customer will test again and reply. round-trip-time is good, no bacbone chocked. Unit will not make bit differnce as: The customer tried troubleshooting the issue after connecting laptop directily to the 100 mbps link. In that case also the result was same.
Note that your screenshot displays bytes, not bits. So it will display one-eighth the download speed measured in bits.
Check the TCP tuning on the downloading PC. The fact that multiple windows achieve a higher aggregate speed points to this. Use the Google link I supplied earlier, also search "Bandwidth-delay product". Are both ends of the link a substantial geographic distance (several miles) apart?
Note that the adjustments for TCP tuning are to the TCP stack on the machine doing the download, not the network gear.
-- Jay Hennigan - CCIE #7880 - Network Engineering - jay () impulse net Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV
Current thread:
- Re: downloading speed, (continued)
- Re: downloading speed Mike Lewinski (Apr 17)
- Re: downloading speed b nickell (Apr 17)
- Re: downloading speed chandrashakher pawar (Apr 18)
- Re: downloading speed John Sweeting (Apr 21)
- Re: downloading speed chandrashakher pawar (Apr 18)
- Re: downloading speed joel . mercado (Apr 17)
- Re: downloading speed Scott Weeks (Apr 17)
- Re: downloading speed chandrashakher pawar (Apr 17)
- Re: downloading speed Mike Lyon (Apr 17)
- Re: downloading speed Julio Arruda (Apr 17)
- Re: downloading speed Bill OBrien (Apr 17)
- Re: downloading speed Jay Hennigan (Apr 17)
- Re: downloading speed chandrashakher pawar (Apr 17)
- Re: downloading speed Scott Weeks (Apr 17)