Message-Id: <200204072211.g37MB3v06124@marajade.sandelman.ottawa.on.ca>
To: netdev@oss.sgi.com
Subject: Re: Patch: Device operative state notification against 2.5.7 
In-reply-to: Your message of "Sun, 07 Apr 2002 16:16:59 EDT."
             <Pine.GSO.4.30.0204071538220.12041-100000@shell.cyberus.ca> 
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Date: Sun, 07 Apr 2002 18:11:03 -0400
From: Michael Richardson <mcr@sandelman.ottawa.on.ca>
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>>>>> "jamal" == jamal  <hadi@cyberus.ca> writes:
    >> -IFOP_DOWN_LOWERLAYER
    >> Lower layer is down, f.e. ethernet interfaces below a VLAN
    >> -IFOP_DOWN_NOCARRIER
    >> Interface link beat/framing is missing (current netif_carrier_o* maps
    >> here)

  Are there docs on these interfaces somewhere?

    jamal> Good naming convention for the above two.

    >> -IFOP_DOWN_KEEPALIVE
    >> Another form of keepalive is missing

    jamal> Not clear on this one.

  PPP, for instance, does keepalives. 
  An IPsec tunnel might also use such a mechanism (we have plans).

    jamal> Also the only time IFOP_DOWN_LOWERLAYER makes sense is when the top
    jamal> stacked device is actually admin up (but none of the lower devices are
    jamal> operationally UP)

  There are very good operational reasons why this is often done...
  It would be nice to see this kind of stuff in diagnostics. 

]       ON HUMILITY: to err is human. To moo, bovine.           |  firewalls  [
]   Michael Richardson, Sandelman Software Works, Ottawa, ON    |net architect[
] mcr@sandelman.ottawa.on.ca http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another NetBSD/notebook using, kernel hacking, security guy");  [

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