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CoS (EXP) field

  • From: Yousuf Hasan <yhasan@cisco.com>
  • Date: Tue, 30 Oct 2001 13:58:09 -0700
  • Cc: pradeep n <nmnpradeep@yahoo.com>, mpls@UU.NET

With L-LSPs the EXP field is used for determining the WRED Drop precedence of the packet
Thanks

-Yousuf


At 01:17 PM 10/30/2001 -0500, Iren, Sami wrote:
>Pradeep:
>This field is used by both E-LSPs and L-LSPs.
>See draft-ietf-mpls-diff-ext-09.txt for more info.
>--Sami
>
>> -----Original Message-----
>> From: Yousuf Hasan [mailto:yhasan@cisco.com]
>> Sent: Tuesday, October 30, 2001 3:46 AM
>> To: pradeep n
>> Cc: mpls@UU.NET
>> Subject: Re: CoS (EXP) field
>> 
>> 
>> At 01:36 AM 10/30/2001 -0700, Yousuf Hasan wrote:
>> >At 01:11 AM 10/30/2001 -0800, pradeep n wrote:
>> >>CoS (EXP) field of Shim Header is considered as
>> >>Expermental range, currently this field is being
>> >>considered for QOS implementation.
>> >
>> >That's true, the EXP or CoS field is 3 bits & is normally 
>> used to map IP precedence. And this would be E-LSPs which 
>> means that the LSP's QOS is inferred from the EXP field
>> 
>> correction: the MPLS packet's QoS in this LSP is inferred 
>> from the EXP field
>> 
>> 
>> >Thanks
>> >
>> >-Yousuf
>> >
>> >
>> >>Please elobrate on this matter. More information
>> >>expected.
>> >>
>> >>Pradeep
>> >>
>> >>
>> >>__________________________________________________
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>>