[outages] Level3 taking the Southern Route from Boston to Poughkeepsie

Jeremy Chadwick jdc at koitsu.org
Thu Oct 4 15:02:47 EDT 2012


Steve,

And what about a traceroute from hyphen.bard.edu to wherever that L3
looking glass is?  Since the source (of the looking glass) doesn't
appear to be shown, I would say a traceroute from hyphen.bard.edu to
4.69.132.242 would be the 2nd best thing to have (and ignore any packet
loss you see at that destination; it's a router not a machine).

Just last week on the mailing list I covered the importance of having
traceroutes from both directions, re: asymmetrical routing.  The PDF
I've linked should be read in full:

https://puck.nether.net/pipermail/outages/2012-September/004466.html

-- 
| Jeremy Chadwick                                   jdc at koitsu.org |
| UNIX Systems Administrator                http://jdc.koitsu.org/ |
| Mountain View, CA, US                                            |
| Making life hard for others since 1977.             PGP 4BD6C0CB |

On Thu, Oct 04, 2012 at 02:35:07PM -0400, Steve Bohrer wrote:
> Hi,
> 
> Bard College at Simon's Rock (simons-rock.edu) is a small college in
> Southwestern Mass, with our parent campus, Bard (bard.edu), in the
> Hudson Valley near Rhinebeck, NY.
> 
> We use a database hosted on the main campus, and poor database
> performance here is often correlated with Level3 / Global Crossing
> issues in New York city. Today my users are complaining about slow
> database response, and I find that traceroutes from here, and from
> Level3's Looking Glass Boston page now go from NYC to Poughkeepsie
> via Washington, Atlanta, and Miami. This is a new routing; traces
> from past months went directly from NYC to Poughkeepsie.
> 
> I've reported this to our provider, who has presumably passed it
> along to Level3, but I'm wondering if these goofy routes are part of
> a work-around of some bigger issue in NYC, or just a screw up, or
> perhaps there is some valid business reason for this routing change?
> 
> Anyone else seeing strangeness via Level3 from NYC to the Hudson?
> 
> 
> Here's Level3's traceroute, from http://lg.level3.net/traceroute/traceroute.cgi?site=bos1&target=hyphen.bard.edu
> :
> 
> Show Level 3 (Boston, MA) Traceroute to hyphen.bard.edu (192.246.235.1)
> 
>  1 ae-2-7.bar1.Boston1.Level3.net (4.69.132.242) 0 msec 0 msec 0 msec
>  2 ae-0-11.bar2.Boston1.Level3.net (4.69.140.90) 0 msec 0 msec 4 msec
>  3 ae-8-8.ebr1.NewYork1.Level3.net (4.69.140.98) 32 msec 32 msec 36
> msec
>  4 ae-10-10.ebr2.Washington12.Level3.net (4.69.148.50) 32 msec 32
> msec 36 msec
>  5 ae-1-100.ebr1.Washington12.Level3.net (4.69.143.213) 36 msec 44
> msec 44 msec
>  6 ae-6-6.ebr1.Atlanta2.Level3.net (4.69.148.105) 72 msec 36 msec 36
> msec
>  7 ae-1-100.ebr2.Atlanta2.Level3.net (4.69.132.34) 32 msec 36 msec
> 44 msec
>  8 ae-2-2.ebr2.Miami1.Level3.net (4.69.140.141) 36 msec 40 msec 36 msec
>  9 ae-2-52.edge1.Miami2.Level3.net (4.69.138.107) 32 msec 36 msec 36
> msec
>  10 64.209.106.214 36 msec 36 msec 36 msec
>  11 10gigabitethernet1-1.core1.atl1.he.net (72.52.92.53) [AS6939
> {HURRICANE}] 40 msec 36 msec 40 msec
>  12 10gigabitethernet6-4.core1.ash1.he.net (184.105.213.109) [AS6939
> {HURRICANE}] 40 msec 40 msec 52 msec
>  13 10gigabitethernet1-2.core1.nyc4.he.net (72.52.92.85) [AS6939
> {HURRICANE}] 40 msec 48 msec 48 msec
>  14 10gigabitethernet4-1.core1.nyc5.he.net (184.105.213.218) [AS6939
> {HURRICANE}] 40 msec 48 msec 48 msec
>  15 *
> lightower-fiber-networks.10gigabitethernet3-2.core1.nyc5.he.net
> (216.66.50.106) [AS6939 {HURRICANE}] 208 msec 204 msec
>  16 xe-0-3-0.pghknyshj42.lightower.net (72.22.160.150) [AS46887
> {LIGHTOWER}] 208 msec * 220 msec
>  17 ae0-pghknyshj91.lightower.net (72.22.160.158) [AS46887
> {LIGHTOWER}] 92 msec 64 msec 44 msec
>  18 xe-7-2-0.kgtnnykgj91.lightower.net (72.22.160.107) [AS46887
> {LIGHTOWER}] 196 msec 128 msec 312 msec
>  19 BardCollege-cust.customer.hvdata.net (64.72.66.234) [AS46887
> {LIGHTOWER}] 164 msec * *
> 
> (In the past, we sometimes got a nice short route directly from
> Level3 in Boston to Lightower.net in Boston, as Lightower seems to
> have a direct link Poughkeepsie to Boston. However, when Level3
> merged with Global Crossing, our route to Bard started going through
> NYC to reach Lightower, which has been more troublesome.)
> 
> Thanks for any hints you can offer.
> 
> Steve Bohrer
> Network Admin
> Bard College at Simon's Rock
> 413-528-7645	
> 
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