Cisco Cisco ASR 1000 Series 40Gbps SPA Interface Processor 데이터 시트
Data Sheet
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conjunction with the SIPs, the Cisco ATM SPAs continue to deliver new features made possible by
industry-leading Cisco IOS® Software protocols, services, and an ATM-rich feature set.
The Cisco ATM SPAs address the growing demand for improved ATM QoS features, which are
combined with the advanced Layer 3 class-of-service (CoS) capabilities provided by various Cisco
routers. Robust QoS mechanisms help prioritize traffic from traditional and high-speed LANs over
an ATM network. Network managers can now cost-effectively terminate high-speed ATM, enabling
rich QoS features for aggregation or campus applications.
The Cisco ATM SPAs can be inserted in the Cisco SIPs that support various edge services such
as:
●
IPv4, IPv6, and MPLS hardware-assisted forwarding
●
Enhanced security features such as extended access control lists (ACLs), Unicast Return
Path Forwarding (URPF), Internet Control Message Protocol (ICMP) rate limiting, and
others
●
Extensive QoS implementation based on either "classical" QoS (three type-of-service [ToS]
bits), Differentiated Services (DiffServ [six DiffServe code point (DSCP) bits]), or MPLS (3
bits EXP)
●
Enhanced NetFlow, statistics, and billing data to allow service providers to generate
different billing profiles for their customers
●
MPLS-VPN support that allows for Layer 3 VPN deployments and various related
applications
●
Any Transport over MPLS (AtoM) or pseudowire edge-to-edge emulation 3 (PWE3) support
for transport solutions
The Cisco ATM SPAs use replaceable Small Form-Factor Pluggable (SFP) optical modules that
allow customers the flexibility to use different optical interfaces on the same SPA.
The Cisco ATM SPAs are hot-swappable and support service-transparent online insertion and
removal (OIR), allowing removal of the SPA without impacting the interface processor and other
SPAs.
Applications
The Cisco ATM SPAs are designed for a wide range of network applications. The specific
combination of ATM features and standards makes the Cisco ATM SPAs ideal for both enterprise-
based ATM WANs and service provider infrastructures.
Enterprise-Based ATM WAN
ATM technology is now a favored choice for very high-bandwidth corporate connectivity across an
enterprise WAN. Providing connectivity to geographically dispersed facilities, typical ATM WAN
interfaces range from 34 to 622 Mbps. These very large WAN "pipes" supply ample bandwidth for
the needs of corporate infrastructures today, with room for growth in the future. Enterprise-based
ATM WANs can be deployed through private networks or through a public ATM service from large
service providers.
With the many advanced ATM capabilities and support for MPLS and QoS (such as per-virtual
circuit and per-virtual path traffic shaping), the Cisco ATM SPAs are ideal for interconnecting Cisco
6500/7600s at central sites or larger remote sites through an enterprise-based ATM WAN.
Through OC-3c/STM-1c or OC-12c/STM-4c ATM links, the Cisco ATM SPAs can be connected to