12-21-2011 05:26 AM
dear all,
What is the default behaviour on CRS nodes when it comes to incoming packets, is packets marking trusted or maked down ?
I tested trusting via policy map, but option was not available to trust. Is there a similar command to IOS to explicitly trust dscp or cos ?
TIA
Samir
Solved! Go to Solution.
12-23-2011 12:25 AM
Hello Samir,
That should be CRS default behavior.
Transition Behavior
==============================================================================
COS > L2VPN .1p bits are copied into EXP
L2VPN > COS No copy by default. Default value of 0 is imposed in .1p field
IP to MPLS IP Precedence value copied to MPLS EXP
MPLS to IP No copy down behavior
PHP EXP bit not copied to bottom label
You can follow “DiffServ Tunneling Modes for MPLS Networks” document for more details on DiffServ in MPLS implementation. It is written for IOS, but the approach is the same.
http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a008022ad7e.shtml
Regards,
/A
12-23-2011 12:25 AM
Hello Samir,
That should be CRS default behavior.
Transition Behavior
==============================================================================
COS > L2VPN .1p bits are copied into EXP
L2VPN > COS No copy by default. Default value of 0 is imposed in .1p field
IP to MPLS IP Precedence value copied to MPLS EXP
MPLS to IP No copy down behavior
PHP EXP bit not copied to bottom label
You can follow “DiffServ Tunneling Modes for MPLS Networks” document for more details on DiffServ in MPLS implementation. It is written for IOS, but the approach is the same.
http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a008022ad7e.shtml
Regards,
/A
12-23-2011 01:21 AM
Many thanks for the confirmation !
Samir
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