Unroutable on Verizon

Joe Provo nanog-post at rsuc.gweep.net
Thu Sep 3 21:34:48 UTC 2009

[comment: subject is irksome - "Unroutable"? That is meaningless]

On Thu, Sep 03, 2009 at 05:20:23PM -0400, Peter Beckman wrote:
> I can't reach from Verizon, but I can via Cox Communications
> Business Fiber as well as Level3.  Dies at a peering point it seems:
> HOST: home                        Loss%   Snt   Last   Avg  Best  Wrst StDev
>   1. mph                           0.0%    20    0.7   0.6   0.5   0.7   0.1

Presumably ICMP probes - those are frequently rate-limited as
counter-measures you realize?  And which Verizon? 701 clearly shows it
in its tables and packets go there. Since your mtr or whatever shows the
traffic reaching a GBLX address, so you likely want to reach out to them.

> Can anyone else confirm?  Bad BGP Announcement?

What does your table say? How does that compare to data in RIS, route-views,
etc?  Independent investigation with table data -if your concern is the
state of someone's "routing"- would help.



             RSUC / GweepNet / Spunk / FnB / Usenix / SAGE

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