MEF Ethernet Traffic Parameters draft-dimitri-mef-ethernet-traffic-parameters-00.txt

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MEF EthernetTraffic Parameters
draft-dimitri-mef-ethernet-tr
affic-parameters-00.txt

• IETF65 - Dallas - Mar06 ltdpapadimitriou_at_psg.comgt

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Why ?

• Demand from OIF
• Provide traffic parameters for Ethernet service
  provisioning across domain boundaries
• Presented in CCAMP but status to be revisited
  depending on GELS evolution

Ethernet LSP
l2sc
l2sc
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Overview

• Per RFC3471, inclusion of technology specific
  parameters in SENDER_ TSPEC and FLOWSPEC specific
  objects
• Ethernet traffic parameters MEF.10 used when in
  Label Request object
• LSP Switching Type L2SC
• LSP encoding type Ethernet
• SENDER_TSPEC/FLOWSPEC object
• Ethernet link type (switching granularity)
• MTU value
• Bandwidth Profile set of traffic parameters
• Committed Rate described in terms of the CIR
  (Committed Information Rate) and CBS (Committed
  Burst Size)
• Excess Rate described in terms of the EIR
  (Excess Information Rate) and EBS (Excess Burst
  Size)
• Color mode (CM) "color-aware" or "color-blind"
  property is employed by the bandwidth profile
• Coupling flag (CF) choice between two modes of
  operations of the rate enforcement algorithm

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Sender_Tspec Format
Ethernet SENDER_TSPEC object (Class-Num 12,
Class-Type TBA) 0 1
2 3 0 1 2 3 4 5
6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
1 ----------------------
---------- Length
Class-Num (12) C-Type (TBA)
-------------------------
------- Switching Granularity
MTU
-------------------------
-------

TLVs

----------
----------------------

• Specific TLV defined for Bandwidth Profile
• ltprofilegt 8-bit vector of flags
• ltCIRgt, ltCBSgt, ltEIRgt, ltEBSgt
• each over 32 bits, unit of bytes and encoded as
  IEEE single-precision floating-point number
  RFC1832

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Next Steps

• Need for signaling multiple CoS per EVC ?
• Requires combination with DS-TE
• Status of document will depend on GELS evolution
• As of today informational status