Техническая Спецификация для Cisco Cisco ONS 15310-CL SONET Multiservice Platform
Cisco Systems, Inc.
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Data Sheet
Cisco ONS 15310 CE-Series 8-Port 10/100 Carrier Ethernet Card for
the 15310 SONET Multiservice Platforms
the 15310 SONET Multiservice Platforms
The Cisco
®
ONS 15310 SONET multiservice provisioning platforms are optimized for use at the customer location and at
aggregation nodes in a service provider’s network or business campus environments. The Cisco ONS 15310 supports a
broad range of Layer 1 transport and Layer 2 packet-switching functions, allowing for flexible packet services over
Ethernet and SONET.
Cisco ONS 15310 CE-Series 8-Port 10/100 Card Overview
The Cisco ONS 15310 can be equipped with Ethernet cards to facilitate the delivery of carrier-class, private-line Ethernet and Fast Ethernet
services. Virtual concatenation (VCAT), Link Capacity Adjustment Scheme (LCAS), standard encapsulation, and SONET sub-50-millisecond
(ms) resiliency schemes are used to deliver these point-to-point data services efficiently and in conjunction with the traditional TDM service-
delivery requirements.
The Cisco ONS 15310 Carrier Ethernet solution allows service providers and enterprise customers to easily migrate their traditional SONET
networks to a converged network architecture where all DS-1, DS-3, Ethernet, and Fast Ethernet services are provisioned and maintained with
the same design that carriers have become accustomed to for traditional service delivery.
The Cisco ONS 15310 CE-Series 8-Port 10/100 Carrier Ethernet Card (Figure 1) is a Layer 1 card providing port-mapped services and
interoperability with the Carrier Ethernet services supported on the Cisco ONS 15454 SONET multiservice provisioning platform (MSPP),
delivering Ethernet and Fast Ethernet solutions that span access and metropolitan-area networks.
Key Features and Benefits
Physically, the card provides a mapping of up to eight 10/100 Ethernet encapsulated traffic streams into a SONET payload. The SONET
payload makes use of low-order virtual concatenation (VT1.5) and high-order (STS-1) contiguous concatenation (CCAT) with a choice of
Generic Framing Protocol (GFP) or High-Level Data Link Control (HDLC)-based framing. The card also supports LCAS, which allows hitless
dynamic adjustment of SONET link bandwidth. Each 10/100 Ethernet port can be mapped to a SONET channel in increments of VT1.5 or
STS-1 granularity. Each card supports packet processing, classification, quality of service (QoS)-based queuing, and traffic-scheduling features.
The Cisco ONS 15310 CE-Series 8-Port 10/100 Carrier Ethernet Card provides eight Ethernet client interfaces ported to eight packet-over-
SONET (POS) or Virtual Concatenation Group (VCG) ports. Each of the Ethernet client interfaces is encapsulated into a SONET payload and
exits the Carrier Ethernet card through one of the eight available virtual POS or VCG ports for cross-connection to the Cisco ONS 15310
optical interface. Each of the virtual POS or VCG ports is mapped to a STS-1 or STS-3c SONET circuit or to a VCAT SONET circuit where
the members of the VCAT could be either VT1.5 (Low-Order VCAT [LO-VCAT], VT1.5-xv) or STS-1 (High-Order VCAT [HO-VCAT],
STS-1-xv [x=1, 2, 3]) SONET circuits selected by the user during service provisioning. Ethernet frames are encapsulated to SONET payload
using either the standard ITU-T G.7041 Generic Framing Procedure (GFP) or HDLC encapsulation for interoperability with other compatible
Cisco products. The member circuits of the VCG can be transported as protected circuits (unidirectional-path switched ring [UPSR], path-
protected mesh network [PPMN], and 1+1) or unprotected circuits, providing the level of resiliency specified by the network administrator or
available bandwidth. Optionally the VCG ports may use the ITU-T G.7042 LCAS scheme to manage the dynamic increase or decrease of
transport bandwidth for Ethernet traffic with no or minimal service interruption.