[c-nsp] half duplex question

Scott Granados scott at granados-llc.net
Wed Aug 3 15:37:54 EDT 2011


This gives me flashbacks to the old GlobalCentre network.  Many connections 
handed off to colocation customers were half duplex.  It was squirrely.

a
-----Original Message----- 
From: John Brown
Sent: Wednesday, August 03, 2011 2:41 PM
To: james edwards ; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] half duplex question

The issue you will have is that 10Mb/s Half duplex will only get about 3 to 
4 Mb/s worth of traffic.  This is because you will start to see collisions 
on the line.

Some is void of clue at the provider side.   Proper traffic policies should 
limit your bandwidth.  Not playing dumb duplex games.

I would strongly recommend that full-duplex be enabled on both ends

Cheers,

John Brown
CityLink Fiber Holdings, Inc.
Albuquerque's only Open Access Fiber provider
100Mb/s to the home
GigE to the business

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of james edwards
> Sent: Wednesday, August 03, 2011 10:56 AM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] half duplex question
>
> I have a metro Ethernet connection with a 5 mbs commit. Normally they
> shape the incoming and I shape the outgoing to the commit rate. This time
> they want me to go half duplex, 10 mbs. The end result is 5 mbs. Is this 
> wise
> or are there any drawbacks to using half duplex here ?
>
> Thanks,
>
> --
> James H. Edwards
> Network Systems Administrator
> Judicial Information Division
> jedwards at nmcourts.gov
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/ 



More information about the cisco-nsp mailing list