David, Can you try turning off 'Spanning Tree' support in the switch?
I used to see this type of behaviour, and that would usually fix it. Jim McQuillan [email protected] On 09/16/2010 10:58 AM, David Burgess wrote: > Hi all, > > Ubuntu 10.04 x86_64 server > LTSP 5.x > 14 thin clients > Cisco switches > multiple vlans (tc all on single vlan) > Windows Server 2008 doing dhcp (via ip helper AFAIK) > > My LTSP network was functioning beautifully, with clients > automatically booting each morning and shutting down each evening. > It's been at least a month since I have touched anything in the > configuration. > > Two days ago our network admins replaced an aging core switch > (4506>4506E) and now none of my thin clients will complete a boot. I > see the PXE screen, the tc gets its reserved IP address and initrd > appears to load completely. The Ubuntu splash screen appears and stays > eternally. If I hit escape I see an endless loop of > > udhcpc[847]: udhcpc (v0.9.9-pre) started > udhcpc[847]: sending discover... > udhcpc[847]: sending discover... > udhcpc[847]: sending discover... > udhcpc[847]: No lease, failing. > udhcpc[848]: udhcpc (v0.9.9-pre) started > > Given the circumstances I am convinced that this is a network > configuration problem, but I cannot convince the network admin of > this, since nobody else is complaining and dhcp appears to be working > normally on every workstation and server. > > Can somebody please give me a hint of what exactly is failing here and > where we should be looking for the solution? Unfortunately I have no > access to the core switch configuration, so extensive investigation is > not likely to occur unless I can convince the network admin that he > has caused the problem. > > Thanks. > > db > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _____________________________________________________________________ > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > For additional LTSP help, try #ltsp channel on irc.freenode.net > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
