PWE3 Control Word <draft-ietf-pwe3-cw-00.txt > PWE3 IETF-61 - - PowerPoint PPT Presentation

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PWE3 Control Word

<draft-ietf-pwe3-cw-00.txt > PWE3 IETF-61 November 2004 Stewart Bryant <stbryant@cisco.com> Danny McPherson <danny@arbor.net>

2 PWE3 Control Word IETF-61

PW Associated Channel

• Only ACTUAL use that PWE3 makes of

0001 encap is to carry OAM traffic

• Associated Channel needs formal

definition

• Other Format ID values are available for

additional purposes.

3 PWE3 Control Word IETF-61

PW Associated Channel

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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |0 0 0 1| FmtID | Reserved | Channel Type | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

FmtID: Format ID for the remaining 3 octets of the header. Channel Type: The PW Associated Channel Type is defined in the IANA PW Associated Channel Type registry

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IANA PW Associated Channel Type registry

• 0: Reserved
• 1..127: IETF Consensus
• 128..255: First Come First Served
• 256..65536: Vendor-specific