The rapid acceptance and accelerated growth of the Internet is quickly transforming the mix of traffic crossing public networks. To compete effectively in a data-driven economy, service providers need an optical transport infrastructure optimized for packets combined with the scalability and the flexibility to support unimagined IP-based applications.
Cisco Systems, Inc. has developed the Cisco 12000 Series One-Port OC-48c/STM-16c POS/SDH line card which provides a unique combination of performance and class-of-service (CoS) features for delivering advanced end-to-end networking features. The high performance switching engine integrates WRED and our innovative ASIC-based queue scheduling algorithm Modified Deficit Round Robin (MDRR). These allow service providers to offer differentiated services with deterministic traffic behavior in the core of the network. This product combines leadership features with industry-leading cost-per-bit metrics for 2.5 Gbps packet optimized transport infrastructures (i.e. $27.1 per Mbit). Taken together, service providers can use this product to build flexible and cost-effective infrastructures to compete effectively in an Internet-driven economy.
The Cisco 12000 Series One-Port OC-48c/STM-16c POS/SDH line card can be configured with either short-reach 1310 nm optics or long-reach 1550 nm optics. Using short-reach 1310 nm optics, a service provider can connect into a traditional SONET/SDH solution or a transponder-based dense wavelength division multiplexing (DWDM) solution. Using long-reach 1550 nm optics (24 dBm power budget), a service provider can light dark fiber and connect two Cisco 12000 Series Internet Routers in a point-to-point configuration to eliminate a transport layer of equipment, helping reduce networking and operational costs.
Cisco 12000 Series One-Port OC-48c/STM-16c POS/SDH Line Card
|1Post initial First Customer Ship (FCS) release|
- 4 Mpps forwarding rate for IP, Frame Relay Switching1, and Multiprotocol Label Switching (MPLS)
- IP and MPLS load balancing (6 paths)
- IP and MPLS CoS128 CoS queues per destination line card (2088 CoS queues total)
- Random Early Detection (RED), and Weighted Random Early Detection (WRED)
- Modified Deficit Round Robin (MDRR)
- Packet/byte count, SONET/SDH errors, queue size, and WRED statistics without performance degradation.
- MPLS traffic engineering using Routing with Resource Reservation (RRR)
- MPLS Virtual Private Network (VPN)1
- Multicast forwarding
- Per Interface Rate Control (PIRC)1
- Extended access control lists (EACLs)1
- A Cisco Express Forwarding (CEF) table that can accommodate up to one million forwarding entries
- Maximum Transfer Unit (MTU) 9188 byte
- 64 MB of route table memory, expandable to 256 MB
- 128 MB of packet forwarding table memory (PSA)
- 256 MB of packet buffer memory, expandable to 512 MB
- Standards-compliant SONET/SDH interface
- Alarm processing
- Loss of Signal (LOS), Loss of Frame (LOF), Line Alarm Indicator Signal (LAIS), Path Alarm Indicator Signal (PAIS), Loss of Pointer (LOP), Line Remote Defect Indicator (LRDI), Path Remote Defect Indicator (PRDI), Signal Failure (SF), Signal Degrade (SD), Line Remote Error Indicator (Line FEBE), Path Remote Error Indicator (Path FEBE)
- Performance monitoring
- Protection switching
- Local (diagnostic) and line (network) loopback
- Payload mapping
The Cisco OC-48/STM-16 long-reach optics are compliant with the Table 4-6 optical parameters, and the short-reach optics are compliant with the Table 4-11 optical parameter of the GR-253-Core Synchronous Optical Network (SONET) transport systems: Common Generic Criteria, Issue 2 (Bellcore, December 1995).
Optical Power BudgetPacket-over-SONET SDH Cisco 12000 OC-48/STM-16 Optics
|Parameter||Short-Reach 1310nm SR-1||Long-Reach 1550nm LR-2|
|Launch Power (Max.)|
|Launch Power (Min.)|
|Receiver Power (Max.)|
|Receiver Power (Min.)|
|Optical Path Power Penalty|
|1Worst-case scenario considering fiber quality, connectors, patch panel, and splices.|
Note: A typical single-mode optical cable has a transmission loss of 0.4-0.5 dB/km at the 1310 nm region. The splicing loss will be 0.2-0.3 dB each, and splicing will be made at every one to three kilometers (conduit) or two to five kilometers (direct burial). At 1550 nm, the cable loss will typically drop to 0.25 dBm/km.
Product Availability and Part Numbers
|Product Descriptions||Part Number||Availability|
|1-Port OC-48/STM-16 SONET/SDH 1310 nm short-reach with SC Connector|
|1-Port OC-48/STM-16 SONET/SDH 1550 nm long-reach with SC Connector|
Line Card Memory Options
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1Post initial First Customer Ship (FCS) release