Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP)
2
SDH Tunneling Over Cisco ONS 15454 SONET MSPP Systems
OL-21041-01
•
Generates an STM-N signal with MSOH and RSOH
The SDH to SONET mapping depends on the SDH payload type being transported, which the user
defines during the creation of the SONET circuits used to transport the SDH traffic. For example, an
STM-4 port can be mapped in a number of alternative ways, depending on the content of the signal
including:
defines during the creation of the SONET circuits used to transport the SDH traffic. For example, an
STM-4 port can be mapped in a number of alternative ways, depending on the content of the signal
including:
•
One STS-12c circuit to transport a 600M concatenated data payload.
•
Four (4) STS-3c circuits created to transport a sub-structured signal from a STM-4 port to overwrite
the pointers of all the incoming AU4s and enable the visibility and access to the sub-structure, when
the signal is converted back to SDH at the end optical interface.
the pointers of all the incoming AU4s and enable the visibility and access to the sub-structure, when
the signal is converted back to SDH at the end optical interface.
The multi-circuit creation capacity of the CTC allows the user to provision several circuits with the same
characteristics at one go. CTC automatically duplicates the creation process, applying sequential circuit
names and picking available resources to terminate the circuits on the same end interfaces.
characteristics at one go. CTC automatically duplicates the creation process, applying sequential circuit
names and picking available resources to terminate the circuits on the same end interfaces.
Each ONS 15454 optical card can be provisioned to support SDH or SONET traffic on a port-to-port
basis. When configured for SDH signal, the ONS 15454 node may be provisioned for line timing from
the incoming SDH signal. Additionally, the SDH configured optical modules (except the OC3/STM1
card) can support the ONS 15454 DCC tunneling feature. This is further explained in the
basis. When configured for SDH signal, the ONS 15454 node may be provisioned for line timing from
the incoming SDH signal. Additionally, the SDH configured optical modules (except the OC3/STM1
card) can support the ONS 15454 DCC tunneling feature. This is further explained in the
SDH configured ports can be provisioned as part of a 1+1 linear protection group to interconnect with
an SDH device. However, interoperability tests with third party SDH equipment must be conducted to
completely validate the solution. SNCP and MS-SPRing are not supported on the ONS 15454 SONET
platform. Once encapsulated in the SONET payload, the SDH traffic can be transported through any
SONET network topology to the other end of the tunnel.
an SDH device. However, interoperability tests with third party SDH equipment must be conducted to
completely validate the solution. SNCP and MS-SPRing are not supported on the ONS 15454 SONET
platform. Once encapsulated in the SONET payload, the SDH traffic can be transported through any
SONET network topology to the other end of the tunnel.
Table 1
SDH to SONET Circuit Type Mapping
Module
Provisioned SDH
interface
interface
SONET circuit type mapping
Equivalent SDH circuits
OC-3/STM-1
1310 IR
STM-1 optical
STS-3c
VC-4
OC-12/STM-4
1310 IR, 1310 LR,
1550 LR
1550 LR
STM-4 optical
4 x STS-3c or STS-12c
depending on payload type
depending on payload type
4 x VC-4 or VC-4-4c depending on
payload type
payload type
OC-48/STM-16
1310 IR, 1550 LR
High speed slot
High speed slot
STM-16 optical
16 x STS-3c or 4 x STS-12c or
STS-48c or any STS-12c /
STS-3c mix depending on
payload type
STS-48c or any STS-12c /
STS-3c mix depending on
payload type
16 x VC-4 or 4 x VC-4-4c or VC-4-16c or
any VC-4-4c / VC-4 mix depending on
payload type
any VC-4-4c / VC-4 mix depending on
payload type
OC-48/STM-16
1310 IR, 1550 LR
Any slot
Any slot
STM-16 optical
16 x STS-3c or 4 x STS-12c or
STS-48c or any STS-12c /
STS-3c mix depending on
payload type
STS-48c or any STS-12c /
STS-3c mix depending on
payload type
16 x VC-4 or 4 x VC-4-4c or VC-4-16c or
any VC-4-4c / VC-4 mix depending on
payload type
any VC-4-4c / VC-4 mix depending on
payload type
OC-192/STM-64
1550 LR High speed
slot
slot
STM-64 optical
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 mix depending on
payload type
or 4 x STS-48c or STS-192c or
any STS-48c / STS-12c /
STS-3c mix depending on
payload type
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 mix depending on
payload type
VC-4-16c or VC-4-64c or any VC-4-16c /
VC-4-4c / VC-4 mix depending on
payload type