Cisco ONS-SI-100-LX10= Data Sheet
Data Sheet
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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The Cisco ML-Series single-slot cards can be installed in any of the 12 multiservice interface slots
in a Cisco ONS 15454 shelf assembly and can be mixed and matched within the assembly or
network to provide flexible architectures to meet the user’s application needs. Each card has
virtual interfaces that are mapped to SONET/SDH optical interfaces for transport with other
services between network elements over 155-Mbps to 10-Gbps optical line rates. Packet transport
bandwidth over the chosen optical interface is provisionable, allowing efficient matching and
scalability of ingress to transport traffic requirements, based upon oversubscription requirements.
The Cisco ML-MR-10 card supports standard-based IEEE 802.17b Resilient Packet Ring (RPR),
which supports increased bandwidth usage over a SONET/SDH ring. 802.17b RPR features also
include steering, shortest-path selection, advanced quality of service (QoS), fairness, and spatial
reuse for bridging.
In addition to RPR, the Cisco ML-MR-10 card supports 26 Packet over SONET (PoS) ports that
enable aggregation of 26 point-to-point Ethernet-over-SONET/SDH circuits.
The advanced set of QoS features on the Cisco ML-MR-10 card allows the network administrator
to fine-tune the network and create and support a wide range of SLAs. Table 1 lists some of the
features and benefits.
Ethernet Virtual Connection (EVC): The Cisco ML-MR-10 card adopts the Metro Ethernet Forum
(MEF) Ethernet Services Framework using EVC Infrastructure/Ethernet Infrastructure (EI).
Connectivity between User-Network Interfaces (UNIs) is specified by the Ethernet Virtual
Connection (EVC). An EVC represents a conceptual “service pipe” within the service provider
network. EVC architecture supported by Cisco IOS Software provides a common framework for
service provisioning Carrier Ethernet devices. In Cisco ONS 15454 Software Release 8.5, the
Cisco ML-MR-10 card supports Ethernet Virtual Private Line services over an RPR ring.
Table 1.
Features and Benefits for QoS
Feature
Benefit
Flexible packet
classification
classification
Classifies packets per EVC or per input port based on class of service (CoS), IP Precedence, or
IP differentiated services code points (DSCPs), allowing the service provider to tailor packet
handling based on the user’s traffic.
IP differentiated services code points (DSCPs), allowing the service provider to tailor packet
handling based on the user’s traffic.
Policing
Policing per EVC or per input port, allows the service provider to contain a user to the SLA
bandwidth requirements, reducing the likelihood that a user will flood the network. Policing is
supported on aggregated bandwidth of a link-aggregated group.
bandwidth requirements, reducing the likelihood that a user will flood the network. Policing is
supported on aggregated bandwidth of a link-aggregated group.
Priority marking
Provides a mechanism, when using either .1Q or QinQ features, for a service provider to
reclassify (mark) a packet with a wrapper Ethernet 802.1p value, allowing downstream nodes to
treat the packet differently and transparently transporting the original CoS bits of the packet
across a service provider network.
reclassify (mark) a packet with a wrapper Ethernet 802.1p value, allowing downstream nodes to
treat the packet differently and transparently transporting the original CoS bits of the packet
across a service provider network.
Per-class queuing
Provides fair access to excess network resources, allows allocation of bandwidth to support
SLAs, and helps ensure that applications with high network-resource requirements are
adequately serviced.
SLAs, and helps ensure that applications with high network-resource requirements are
adequately serviced.
Scheduling
Adds weighting capabilities to Weighted Deficit Round Robin scheduling to provide fair access to
excess bandwidth as well as throughput to each class. Supports strict priority queue for low
latency traffic.
excess bandwidth as well as throughput to each class. Supports strict priority queue for low
latency traffic.