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A quick question on http://www.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-recovery-e2e-signaling-03.txt
Hi All,
It's a bit confusing
how one would encode protection object for dedicated 1:1 protection (without
traffic duplication) and I thought it deserves a confirmation.
I just wanted to
confirm that to signal an LSP that is dedicated 1:1 protection,
where
- Traffic is NOT
duplicated at working and protecting LSP-es (i.e., this is not 1+1
protection),
- There is NO extra
traffic on the protecting LSP (i.e., it's dedicated protection),
we are expected to:
- Set O-bit in
protection object to 1 in signaling protecting LSP, to indicate that the
protecting LSP is (only) carrying the normal traffic after protection
switching (i.e., It's NOT 1+1 setup). If contrasting 1:1 with 1+1 is NOT the
intended use of O-bit, what is the intended use.
- LSP
(Protection Type) Flags to 0x10 = 1+1 Bi-directional Protection (for
GMPLS optical LSPs). I.e., this is a dedicated
protection.
If above
is not the intended use of O-bit, I am not sure why O-bit is defined (as
protection LSP is expected to carry normal traffic after switchover). In which
is it expected to use 0x04 = 1:N Protection with Extra-Traffic as
LSP (Protection Type) Flags?
Thanks
Regards... Zafar