[c-nsp] Need I config DSCP/ToS to ToS manually on Catalyst6509?

[Joe Shen]

Hi,

 I found the following decritption at
http://www.cisco.com/warp/public/105/rtgupdates.html

   "In addition, with any switching engine, QoS
supports Ethernet egress port
   scheduling and congestion avoidance using Layer 2
CoS values. Thus, crucial
   IP and non-IP packets must be mapped to a CoS
value, even if such values are
   used only internally as part of the data bus
header. Crucial IP packets have
   their IP precedence value of 6 mapped to an
equivalent CoS value of 6. Crucial
    non-IP packets, including IS-IS packets
originating from the MSFC, are marked
    with the pak_priority flag and then such flagged
packets are mapped to a CoS
     value of 6. This mapping happens automatically in
current Cisco
     IOS releases. "

   To my understanding, this means Catalyst6509 would
map DSCP/ToS to
   CoS automatically if packet are curcial. My
question is, if QoS
   classes are defined for customer traffic, should I
config such
   mapping manually ? If so, is there any
configuration guide for
   this?

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