Re: NSFNET woe: causes and consequences

Thu, 8 Oct 87 20:23:06 EDT


Thanks very much for your thoughtful and informative response. Like you,
I do believe the proximate cause of the psc-gw problems is running
short of virtual-circuit resources in the X25 interface; however, I am
a little worried about the workaround you suggest - shortening the
idle timer in the PSN itself. I have verified that packets do get
lost if traffic is flowing at the time of the VC clear due to the
interface itself, even in loopback. I think the eventual resolution
must be rebuilding the driver to reclaim VCs on the basis of time and
use, much the same way the PSNs must handle that for themselves.


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