Date: Tue, 9 Apr 2002 10:34:15 -0600 (MDT) From: Fred Clift <fclift@verio.net> To: "Thomas P. Holmes [ Systems ]" <tholmes@thebiz.net> Cc: <alpha@freebsd.org> Subject: Re: diskless booting Message-ID: <20020409102553.H63968-100000@vespa.dmz.orem.verio.net> In-Reply-To: <Pine.BSF.4.21.0204091207520.11117-100000@staff.noc.thebiz.net>
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On Tue, 9 Apr 2002, Thomas P. Holmes [ Systems ] wrote: > > I removed the machine from the rack and now booting off of a different > master server. The new master server is servering up dhcp just fine for > intel. I'm seeing NO packets in a tcpdump on the dhcp server from the > alpha. It is like the packet is not even hitting the interface. I've > tried the second interface as well and no change. MAC cache in an older switch? Have you power-cycled the switch or otherwise cleared it's bridging-cache? It still might be expecting/sending packets to the old switch port? You have swapped the cable just to make sure? Different port settings on the new switch port you are plugged into on a manages switch preventing you from getting lin - ie you have speed and duplex set properly on the new switch? To summarize what changes I think you said you made (or ones that I perhaps incorrectly inferr) 1) changed physical location of box 2) changed cables used to attach box to network/power/etc 3) changed what switch/router/switch-port you were plugged into 4) change what server you are trying to boot off of Did I miss any? As for things that it probably isn't: 1) the dhcp server on the new boot-server seems to work for some other clients 2) the network cable appears to have worked recently for some other machine So, your problem could be physical or logical network config, some odd problem that happened to the machine when you moved it, or some wierd interaction between things we havne't thought of yet. Vlans on the new switch? using dhcp boot helpers? I've seen some broken dhcp-helpers on 'layer-3 switch's that work fine for a normal dhcp boot but fail for pxe and the like. Have you tried using a crossover cable to attach the booting box to another box directly while tcpdumping it to see if packets are indeed exiting the NIC? Just some ideas -- good luck. Fred -- Fred Clift - fclift@verio.net -- Remember: If brute force doesn't work, you're just not using enough. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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