D-Link Forums
The Graveyard - Products No Longer Supported => Routers / COVR => DIR-827 => Topic started by: cmartell1978 on December 27, 2011, 08:08:20 PM
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Hey everyone. Just purchased this router and was wondering what everyones opinion is on dynamic fragmentation. I know at one time it was suppose to be turned off because xbox live wouldnt work with it. Wondering what the story is now. I have a cable connection, motorola modem coming into my router with my xbox and ps3 hardwired, and 1 laptop wireless. My connection speed is 9 down and 1 up.
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I had 10 down and 1 up until this past summer, and always have used DF turned OFF. Never saw any issues other than standard lag we saw when playing here and there in games. I still see lag on my 50 Down/2Up cable now. I posted XBL gaming and Gamefuel sticky info.
Gaming and QoS for XBL (http://forums.dlink.com/index.php?topic=42011.0)
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Since you asked, here is my opinion. The major impact is not on your local client traffic but the remote services being provided by the Internet.
Dynamic Fragmentation should NOT be enabled due to several reasons. One of which is fragmented packets are now used for denial-of-service attacks. Also, they can be used in circumventing firewalls and intrusion detection/prevention systems allowing malicious code to be sent through. Fragmentation also places an ever increasing burden on network elements and applications to fragment, resemble, and buffer these packets as well as increased overhead for retransmission of lost/dropped packets. Furthermore, more and more techniques are being utilized on the Internet to secure communications from client to server. So, having the router tamper with the packet by fragmenting it up into various pieces could break these types of secured communications without a application level gateway (ALG) being developed such as the PPTP and IPSec (VPN) ones the DIR-827 has. In short, it is not worth enabling the dynamic fragmentation option because it is out-of-date and can silently and adversely impact communications.
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Also for gaming, it's recommended to turn off some features of the router that are not needed during gaming. Having some additional features going can impact how the router handles the gaming data and thus any additional router management and processing can impact gaming performance.
The XBL sticky has all the info that any game needs to use and run a router well for gaming. Been using it for years now. There might be a few minor tweeks needed for the newer gen routers, however not much.