Extensions for MLNMRN based on OTN draftraoccampmlnmrnotnospfteext02 Rajan Rao rraoinfineracom Khuzema Pithewan kpithewaninfineracom IETF87 Jul 31 st 2013 O ID: 203136
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Slide1
OSPF-TE Extensions for MLNMRN based on OTNdraft-rao-ccamp-mlnmrn-otn-ospfte-ext-02
Rajan
Rao
(
rrao@infinera.com
)
Khuzema Pithewan (
kpithewan@infinera.com
)
IETF-87 Jul 31
st
2013Slide2
OverviewThis draft focuses on the control plane interworking of OTN with other technologies.Specifically, identify what information is required to be advertised in OSPF, so as to compute a path that transitions from OTN to other technology namely Ethernet, SONET/SDH, or different
multiplexing
hierarchy of OTNSlide3
Example
Hybrid Node
Ethernet Switch
OTN Switch
10GigE
100GigE
OTU4
OTU4
300G
IACD1
Upper
SwitchCap
/
EncTyp
: PSC/Ethernet
Lower
SwitchCap
/
EncType : OTN-TDM/G.709 ODUkSCSI : SignalType+Hierarchy ODU2-ODU4 (For 10GigE)
Advertises ISCD_PSC, IACD1
Advertises ISCD_OTN, IACD1IACD2
Advertises ISCD_PSC, IACD2
Advertises ISCD_OTN, IACD1IACD2
IACD2
Upper
SwitchCap
/
EncTyp
: PSC/Ethernet
Lower
SwitchCap
/
E
ncType
: OTN-TDM/G.709
ODUk
SCSI
:
SignalType+Hierarchy
ODU4(For 100GigE)Slide4
Changes from 01 to 02 - 1Layer ID TLV is modified to carry additional information to infer, if the Layer Identification belongs to upper region or lower region
R bit is used to make sense whether the Layer ID is for Lower region or upper region. 1 means upper region and 0 means lower.
Slide5
Changes from 01 to 02 - 2Added support for SONET/SDH layer Identification
SUKLM bits signifies the presence of SONET/SDH layers and these bits together fully specifies the multiplexing hierarchy.
Slide6
Next StepsWorkgroup feedback is welcome