Which cache aggregation scheme is supported by NetFlow ToS-based router aggregation?
A.
prefix-port
B.
AS
C.
protocol port
D.
destination prefix
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Answer is A
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the answer comes down to a hypen!
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/netflow/configuration/12-4/nf-12-4-book/cfg-nflow-aggr-cache.html#GUID-9C4607DB-EF4D-4E15-A74A-8959DA09B1E4
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Strange, all are supported !
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mmmm I can see now the question should be : which is NOT supported and in this case answer could be A as per the below link
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/oaggnf.html#wp1076196
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The NetFlow Type of Service (ToS)-Based Router Aggregation feature introduced support for additional cache aggregation schemes, all of which include the ToS byte as one of the fields in the aggregation cache. The following are the six ToS-based aggregation schemes:
AS-ToS aggregation scheme
Destination prefix-ToS aggregation scheme
Prefix-port aggregation scheme
Prefix-ToS aggregation scheme
Protocol-port-ToS aggregation scheme
Source prefix-ToS aggregation scheme
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above is from
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/netflow/configuration/12-4/nf-12-4-book/cfg-nflow-aggr-cache.html#GUID-9C4607DB-EF4D-4E15-A74A-8959DA09B1E4
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Cisco sure is underhanded with these answers. All would appear valid however only one is correct because it does not have -ToS behind it.
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