Hi All,
In BCMSN course book (Cisco Press) p233, it is stated that:
"Most Cisco documentation explains flow masks as a way to determine how
packets are compared to entries in the MLS cache. This is inaccurate. Flow
masks are actually used to determine how much information about the packet is
placed in the MLS cache. The flow mask is not used to compare packets to
existing entries in the MLS cache"
But from another source (Boson & Cisco Doc):
"you are introducing policy based routing and want to route differently based
on source, destination, and port number. What command would you use on a
multi-level switch to make it consider port numbers when layer 3 forwarding ?
the correct syntax is: set mls flow [destination|destination-source|full].
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_2/layer3/ml
s.htm#xtocidll0l940"
So the command "set mls flow ...", is it only to determine what information
to
be kept in the mls entry or is it meant to enforce so that all packets going
through the L3 switch will be compared to the mls entry according to the flow
mask that has been set up by the "set mls flow" command ?
Thanks in advance for the answer, I need it for BCMSN exam on Wednesday.
Regards,
Ronny
Message Posted at:
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