NEWS: ISP blows the whistle on router chip 'fault' [ADSL]
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Posted by John Navas on October 22, 2007, 9:48 am
Please log in for more thread options <http://www.theregister.com/2007/10/22/zen_ar7_infineon_bt_fault/>:
One of the UK's best-respected broadband providers has raised concerns about the reliability of the world's most popular ADSL chip. Zen Internet has uncovered a potential problem with the Texas Instruments AR7. The chip is at the heart of about a third of routers in use worldwide today - including Linksys and Netgear kit. Zen has told its customers not to buy models that contain the chip because they provide an unstable connection. [MORE] Incomplete list of some of the dozens of routers that contain the chip: <http://www.linux-mips.org/wiki/AR7>
-- Best regards, John Navas <http:/navasgroup.com>
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Posted by on October 24, 2007, 4:53 pm
Please log in for more thread options > <http://www.theregister.com/2007/10/22/zen_ar7_infineon_bt_fault/>:
> > One of the UK's best-respected broadband providers has raised > concerns about the reliability of the world's most popular ADSL chip. > > Zen Internet has uncovered a potential problem with the Texas > Instruments AR7. The chip is at the heart of about a third of routers > in use worldwide today - including Linksys and Netgear kit. > > Zen has told its customers not to buy models that contain the chip > because they provide an unstable connection. > > [MORE] > > Incomplete list of some of the dozens of routers that contain the chip: > <http://www.linux-mips.org/wiki/AR7> > > -- > Best regards, > John Navas <http:/navasgroup.com> could be true this I was doing a adsl wireless installation with a linksys router and I could not get the router adsl light to stop flashing, I used another type of router in the end that connected no problem | |||||||||||||
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Posted by T. Keating on November 30, 2007, 9:42 am
Please log in for more thread options On Mon, 22 Oct 2007 13:48:26 GMT, John Navas
><http://www.theregister.com/2007/10/22/zen_ar7_infineon_bt_fault/>:
> > One of the UK's best-respected broadband providers has raised > concerns about the reliability of the world's most popular ADSL chip. > > Zen Internet has uncovered a potential problem with the Texas > Instruments AR7. The chip is at the heart of about a third of routers > in use worldwide today - including Linksys and Netgear kit. > > Zen has told its customers not to buy models that contain the chip > because they provide an unstable connection. > > [MORE] > >Incomplete list of some of the dozens of routers that contain the chip: ><http://www.linux-mips.org/wiki/AR7> My Actiontec GT-704 is as stable as a rock(AR7 chipset), uptime since last config change 91days. And I've got one of the worst lines in DSL hell.. So far this modem is of the best (S/N wise.. connection reliability, performance), I've ever run into (verses 6 other DSL modems).. P.S. Their is a nasty DNS bug in th eGT-704.. But I've shut off that service. Meanwhile, Bellsouth/AT&T keeps on splicing in more and more junk into my 11,500ft underground loop. BS measurements now indicate that it's a 26,000 ft loop. BT's weak point is that it uses the defective PPPoX protocol on top of the ATM bridging functionality. . That makes the whole setup highly vulnerable to anything less than a perfect connection. BS/AT&T compensates for this built-in weakness by increasing the interleave factor(Noise profile) to 16 milliseconds.. (which sucks big time.) Note to gamers: A 16ms interleave ratio adds 32ms to the round trip time of any packet sent to/from your IP address.. And each time their is a packet lost, the PPPoX connection is broken and must be re-negioated/restarted. (Big time disruption. several seconds + TCP timeouts & retries) Fortunately, I've got a bridged (no PPPoX), 2ms interleaved connection through Covad.. and a few dropouts don't bother my low latency connection to the net. | |||||||||||||
