[outages] AT&T <-> Level3 Packet Loss in SF Bay Area

Jonathan Lassoff jof at thejof.com
Wed Mar 9 14:21:05 EST 2011


We've been observing a small about of intermittent packet loss to/from
AT&T and Level3 here in the San Francisco Bay Area this morning. In
examining the situation, it seems like a evenly-spaced dropping of
packets to certain IPs.

This appears to end users like some IPs on destination networks are
reachable, while some adjacent ones are not.

I suspect this is due to a failed LAG leg or ECMP leg on Level3's side.


We were able to route around the problem for now.

Cheers,
jof



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