I'm currently looking into AS3 in an attempt to figure out what's going on.
Always interested to hear what others have found out. Cheers, Harry On Nov 30, 2014 8:57 AM, Simon Leinen <simon.lei...@switch.ch> wrote: > > cidr-report writes: > > BGP Update Report > > Interval: 20-Nov-14 -to- 27-Nov-14 (7 days) > > Observation Point: BGP Peering with AS131072 > > > TOP 20 Unstable Origin AS > > Rank ASN Upds % Upds/Pfx AS-Name > [...] > > 11 - AS5 38861 0.6% 7.0 -- SYMBOLICS - Symbolics, > > Inc.,US > > Disappointing to see Symbolics (AS5) on this list. I would expect these > Lisp Machines to have very stable BGP implementations, especially given > the leisurely release rhythm for Genera for the past few decades. Has > the size of the IPv4 unicast table started triggering global GCs? > > Seriously, all these low-numbered ASes in the report look fishy. I > would have liked this to be an artifact of the reporting software (maybe > an issue with 4-byte ASes?), but I do see some strange paths in the BGP > table that make it look like (accidental or malicious) hi-hacking of > these low-numbered ASes. > > Now the fact that these AS numbers are low makes me curious. If I > wanted to hijack other folks' ASes deliberately, I would probably avoid > such numbers because they stand out. Maybe these are just non-standard > "private-use" ASes that are leaked? > > Some suspicious paths I'm seeing right now: > > 133439 5 > 197945 4 > > Hm, maybe 32-bit ASes do have something to do with this... > > Any ideas? > -- > Simon. (Just curious) > > [...] > > 17 - AS3 30043 0.4% 3185.0 -- MIT-GATEWAYS - > > Massachusetts Institute of Technology,US > [...] > > > TOP 20 Unstable Origin AS (Updates per announced prefix) > > Rank ASN Upds % Upds/Pfx AS-Name > [...] > > 13 - AS5 38861 0.6% 7.0 -- SYMBOLICS - Symbolics, > > Inc.,US > [...] > > 15 - AS4 21237 0.3% 871.0 -- ISI-AS - University of > > Southern California,US > [...] > > 19 - AS4 5345 0.1% 1437.0 -- ISI-AS - University of > > Southern California,US > > 20 - AS4 8784 0.1% 2303.0 -- ISI-AS - University of > > Southern California,US
