Cisco 64-port Fiber Patch-Panel Shelf, 2 RU 15454-PP2-64-LC= 데이터 시트
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Data Sheet
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Service Transparency
Critical to offering a wide service mix is a DWDM system’s ability to offer the level of transparency
required by the service. The Cisco ONS 15454 MSTP solution offers the choice of multiservice
aggregation, wavelength aggregation, and wavelength transport, combined with integrated,
intelligent DWDM transmission, in a single platform to optimize network costs for any mix of
service types. Using digital-wrapper and Optical Transport Network (OTN) technologies (defined in
ITU-T G.709) enables transparency, allows enhanced wavelength management and provides
extended optical reach thanks to the integrated Forward Error Correction (FEC) and Enhanced
Forward Error Correction (E-FEC).
Unique to the market is also the possibility for the Cisco ONS 15454 MSTP to support direct
interconnection with DWDM interfaces from Layer 2, Layer 3, and storage area network (SAN)
devices. This element integration eliminates the need for costly and complex OEO conversions at
the boundaries of the network or where the traffic simply needs to pass through a site without
having to terminate on a router (for IP processing) or on a SAN device. In cases where termination
is necessary, the Cisco ONS 15454 MSTP hands off the optical wavelength, keeping it in the
optical domain without the need to perform an electrical conversion in order to hand off the traffic
to the Layer 2, Layer 3, and SAN devices, where the electrical conversion is used only for service
processing.
All the intelligent optical transmission-related features and functions can be supported by the Cisco
ONS 15454 MSTP with these types of “alien” wavelengths and services as well.
Protection Options
The Cisco ONS 15454 MSTP provides multiple provisionable interface protection options, which
facilitate support for high-availability as well as unprotected service delivery to meet the varied
service-level agreements (SLAs) for DWDM transport offerings.
Both 1+1 and Shared protection schemes based on the principles of ITU-T Recommendations can
be supported. The following types of 1+1 protection schemes can be supported:
●
Path Protection
In this case it is possible to offer complete redundancy of the optical path at the network
level but no protection is offered for the unit which is originating the Working and the
Protect DWDM signal and deciding among the two DWDM signals on the receive side.
This type of protection can be supported on individual wavelengths by 2.5Gbps
Transponder and Muxponder units (leveraging on their Protected version); by the GE and
the 10GE XPonder units (operating in Layer2 mode); by the MSPP-On-A-Blade unit; by the
OTU2 XPonder unit; and by the Protection Switching Module (PSM), when used in
conjunction with unprotected Transponder or Muxponder units, or with an Alien DWDM
signal. PSM unit can be used to provide protection for the Multiplexed signal.
●
Path & Equipment Protection
In this case it is possible to offer complete redundancy of the optical path at the network
level and of the units which are originating the Working and the Protect DWDM signals and
deciding among the two DWDM signals on the receive side.
This type of protection can be supported by 2.5Gbps Transponder and Muxponder units
(leveraging on their Unprotected version); by 10Gbps Transponder and Muxponder units;