Date: Tue, 14 Oct 2003 10:10:52 -0700 From: "Kevin Oberman" <oberman@es.net> To: Terry Lambert <tlambert2@mindspring.com> Cc: Andre Guibert de Bruet <andy@siliconlandmark.com> Subject: Re: What's up with the IP stack? Message-ID: <20031014171052.799C55D07@ptavv.es.net> In-Reply-To: Message from Terry Lambert <tlambert2@mindspring.com> of "Tue, 14 Oct 2003 09:56:47 PDT." <3F8C2ACF.7AB166B@mindspring.com>
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> Date: Tue, 14 Oct 2003 09:56:47 -0700 > From: Terry Lambert <tlambert2@mindspring.com> > > Kevin Oberman wrote: > > When I see this I can reach some LAN hosts, but not others. I can > > always seem to reach the access point. I can usually, but not always, > > reach most other systems on the LAN, but not the gateway router, a > > Sonic Wall firewall. I have logged onto another system and then > > connected to the firewall, so it looks like the physical path is OK. > > > > The problem is intermittent and I have only scattered data. I've been > > seeing it sice about the beginning of October. I was blaming it on > > hardware, but now that I see these reports, maybe it's not. (I just > > replaced my Apple Airport AP with a D-Link, so there is something to > > suspect.) > > > > In may case things just start working again. The pause can vary from a > > few seconds to about 10 minutes. netstat -rnf inet and arp -a output > > both look to be fine. > > What about your IP address and default route? > > I've seen wireless cards, especially IBM ones, fail to get good > signal, leaving you with a link.local address, or a valid address, > but no default route. This may be your problem here. > > You might want to "just put the AirPort back"... The problem is that the Airport died. Looks like a power supply issue or a bad cap as it fails whenever it's moving lots of data and then recovers after several quite seconds. My wife's laptop link dies at the same time, so that's why I bought the Linksys. (Sorry for saying D-Link. I get them confused too often.) No. I am monitoring signal strength and it is excellent. I use a static address and gateway and they're fine, too. Both 'arp -a' and 'netstat -rnf inet' show what I would expect including the proper MAC address for the firewall and the hub. I've been using this card for about a year and a half and this problem has just shown up in the past few weeks. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634
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