Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño

OL-4556-01

Table 3-2: SDH to SONET Circuit Type Mapping For Au3 SDH

Optical Card

Provisioned

SDH

Interface

SONET Circuit Type

Mapping

Equivalent Au3 SDH

Circuits

OC-3/STM-1

STM-1

optical

3 x STS-1 or STS-3c
depending on payload
type

3 x VC-3s or VC-4

OC-12/STM-4

OC-12-4/STM-4

STM-4

optical

12 x STS-1 or 4 x STS-3c
or STS-12c or any STS-3c
/ STS-1 mix depending on
payload type

12 x VC-3 or 4 x VC-4 or
VC-4-4c or any VC-4 / VC-
3 mix depending on
payload type

OC-48/STM-16

High Speed Slot

STM-16

optical

48 x STS-1 or 16 x STS-3c
or 4 x STS-12c or STS-
48c or any STS-12c / STS-
3c / STS-1 mix depending
on payload type

48 x VC-3 or 16 x VC-4 or 4
x VC-4-4c or VC-4-16c or
any VC-4-4c / VC-4 / VC-3
mix depending on payload
type

OC-48/STM-16

Any slot

STM-16

optical

48 x STS-1 or 16 x STS-3c
or 4 x STS-12c or STS-
48c or any STS-12c / STS-
3c / STS-1 mix depending
on payload type

48 x VC-3 or 16 x VC-4 or 4
x VC-4-4c or VC-4-16c or
any VC-4-4c / VC-4 / VC-3
mix depending on payload
type

OC-192/STM-

STM-64

optical

192 x STS-1 or 64 x STS-
3c or 16 x STS-12c or 4 x
STS-48c or STS-192c or
any STS-48c / STS-12c /
STS-3c / STS-1 mix
depending on payload
type

192 x VC-3 or 64 x VC-4 or
16 x VC-4-4c or 4 x VC-4-
16c or VC-4-64c or any VC-
4-16c / VC-4-4c / VC-4 /
VC-3 mix depending on
payload type

Synchronization

Cisco ONS 15454 nodes used to transport SDH over SONET should be provisioned for Line
timing from an incoming SDH signal.

Protection

SDH configured ports should be provisioned as part of 1+1 linear protection group for
interconnection with SDH network terminating equipment. The ONS 15454 supports both
unidirectional and bi-directional APS signaling for maximum networking flexibility. SNCP and MS-
SPRing are not supported.

Alarm Reporting

When the OC-N ports have been provisioned for SDH, the OC-N card will continue to report
alarms and performance measurements (PMs) in the same manner as if they were provisioned
for standard SONET transport. This allows an ONS 15454 node supporting SDH transport to
report alarms in a consistent manner with the rest of the SONET nodes in the network.

When an OC-12/STM-4 (IR, 1310 LR and 1550 LR) or an OC-48/STM-16 high-speed (IR and
LR) port is provisioned to support SDH, path alarming is not supported due to improper B3 byte