North American Network Operators Group

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Re: Has PSI been assigned network 1?

  • From: Michael F. Nittmann
  • Date: Mon Apr 24 09:39:56 1995

Route holdowns:

los pobres paquetos: that's just the beauty and purpose of routing 
protocols to propagate the info so that los pobres paquetos don't clog 
the pipe with the goal of being dropped.

To hold routes eternally down is not good: what if the customer 
disconnects that network? I don't want to be notified by all leaf 
networks when they will hickup or disconnect for good. 


On Sun, 23 Apr 1995, Randy Bush 

> Don't know what other folk are seeing, or if y'all even look.  But a
> significant number of leaf customer sites 'round these parts seem to be
> pseudo-random route generators.  I watched a small POP, less than 100
> customers, for about six weeks.  I would never had guessed that DEC, IBM,
> MIT, and dozens of surprising Bs and Cs were in rural Southern Oregon.
> I'm sure that the POP's peer ASs would have been very impressed if we had
> redistributed those routes to external BGP sessions.
> And we occasionally get some exciting announcements from overseas links.
> To move along an other tangent...  What is the general wisdom on putting
> pull-ups on route annoucements to deter route flap?  Vadim kindly gave me
> a static Null 250 hack to keep announcement up even if the source of the
> route drops it.  Hence, you won't get the !H until you get to our border.
> Los pobre packitos will travel all the way and then get whacked.  Seems
> to subvert one interpretation one could read into the intent of BGP.
> randy

Michael F. Nittmann                                             [email protected]
Network Architect						[email protected] 
B3 Corporation, Marshfield, WI (CIX Member)               (715) 387 1700 xt. 158
US Cyber (SM), Washington DC				  (715) 573 2448
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