Re: [karp] BFD Authentication costs

"Bhatia, Manav (Manav)" <manav.bhatia@alcatel-lucent.com> Wed, 31 July 2013 11:36 UTC

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From: "Bhatia, Manav (Manav)" <manav.bhatia@alcatel-lucent.com>
To: "Joel M. Halpern" <jmh@joelhalpern.com>, "karp@ietf.org" <karp@ietf.org>
Thread-Topic: [karp] BFD Authentication costs
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Date: Wed, 31 Jul 2013 11:36:38 +0000
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Subject: Re: [karp] BFD Authentication costs
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Hi Joel,
 
> In practice, on most devices, when BFD is run at low 
> intervals it is done directly on the line card.  Doesn't this 
> mean that in most topologies the number of sessions is 
> roughly the same as the number of physical ports on the device?

Not necessarily. Our customers use vlan tagged IP Interfaces where the # of sessions on a physical port can be greater than 1 (and it usually is).

Cheers, Manav