Messages in this thread | | | Subject | Re: Beowulf channel bonding and typo | Date | Fri, 14 May 1999 18:24:34 +0200 | From | Michael Lausch <> |
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>>>>> "td" == Thomas Davis <tadavis@lbl.gov> >>>>> wrote the following on Thu, 13 May 1999 10:23:05 -0700
td> George Bonser wrote: >> >> How does it behave if you disconnect one of the ethernet cables?
td> Probably the same as my patch did.
td> I've talked to Don Becker about, we have an idea of a solution, I'm just td> waiting to see what happens.
td> Note - if your using tulip based cards, you will see problems when you td> pull the cable out.
td> Oh, what is the possible solution?
td> We talked about using the IFF_RUNNING flag - if your plugged into the td> network, and connection is good (ie, 100BaseT, you've got a carrier td> detected), you get IFF_RUNNING. If the carrier drops, IFF_RUNNING is td> removed (network connection is gone - you can't run anymore, since the td> resource has disappeared!)
td> Only one major problem with this - no driver implements it yet.
IFF_RUNNING would also be cool for other interface types. ISDN ippp interfaces and the new ppp interfaces with autodial support of pppd enabled, appear to be always up, even when there's no connection established. Which is bad for dynamic routing and network management software.
-- Michael Lausch See my web page <http://www.lausch.at/> or query PGP key server for PGP key. "Reality is that which, when you stop believing in it, doesn't go away". -- Philip K. Dick
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