[outages] TWTC IPv6

[Ryan Rawdon]

On Oct 28, 2011, at 9:01 AM, Jon Lewis wrote:

> On Fri, 28 Oct 2011, Ryan Rawdon wrote:
> 
>> On Oct 28, 2011, at 3:43 AM, Ryan Rawdon wrote:
>> 
>>> Starting at 2:50AM (Eastern), we are unable to reach 2001:4870::/32 from a number of locations (all locations that we tested from).
>>> 
>>> ashburn-rtr2#sh bgp ipv6 unicast 2001:4870::/32
>>> % Network not in table
>>> ashburn-rtr2#
>> 
>> 2001:4870::/32 re-appeared at 5:27AM and no other issues appeared to persist.
> 
> I'm a TWT customer, and still not seeing the /32, but am seeing lots of more specific /48's from it.

I don't think I actually checked which prefix we were seeing when connectivity was restored at the time I posted my follow-up.  Right now we are seeing two prefixes from TWTC:
2001:4870::/31
2620:81:8000::/48

(and also 2001:4870:E00B::/48 from a path transiting 4323)

I don't know for sure whether they were advertising the /31 or /32 before the event this morning but regardless 2001:4870::/32 wasn't reachable in the DFZ (as itself or as a superprefix).  bgp.he.net still shows them advertising a /32, so I suspect they only changed to a /31 very recently - potentially during or after this outage.

> 
> I thought this was interesting though:
> 
> $ whois as4323 at whois.arin.net
> [Querying whois.arin.net]
> [Redirected to rwhois.twtelecom.net:4321]
> [Querying rwhois.twtelecom.net]
> [rwhois.twtelecom.net]
> %rwhois V-1.5:003AB6:00 rwhois.twtelecom.net (rwhois_ngd v0.9.0 by James Sella)
> %error 230 No objects found
> 
> ----------------------------------------------------------------------
> Jon Lewis, MCP :)           |  I route
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