36 lines
1002 B
Python
36 lines
1002 B
Python
#!/usr/bin/env python
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from collections import defaultdict
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import pybgpstream
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stream = pybgpstream.BGPStream(
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# Consider this time interval:
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# Sat, 01 Aug 2015 7:50:00 GMT - 08:10:00 GMT
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from_time="2015-08-01 07:50:00", until_time="2015-08-01 08:10:00",
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collectors=["rrc00"],
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record_type="ribs",
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)
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# <prefix, origin-ASns-set > dictionary
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prefix_origin = defaultdict(set)
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for rec in stream.records():
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for elem in rec:
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# Get the prefix
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pfx = elem.fields["prefix"]
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# Get the list of ASes in the AS path
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ases = elem.fields["as-path"].split(" ")
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if len(ases) > 0:
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# Get the origin ASn (rightmost)
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origin = ases[-1]
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# Insert the origin ASn in the set of
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# origins for the prefix
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prefix_origin[pfx].add(origin)
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# Print the list of MOAS prefix and their origin ASns
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for pfx in prefix_origin:
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if len(prefix_origin[pfx]) > 1:
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print((pfx, ",".join(prefix_origin[pfx])))
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