Cisco ASR 1000 Series

ATM shaping is supported, but class queue-based shaping is not.Note
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ATM multipoint connections (beginning in Cisco IOS XE Release 2.5)
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ATM point-to-point connections
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Explicit Forward Congestion Indication (EFCI) bit in the ATM cell header
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AToM VP and VC Mode Cell Relay support
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RFC 2225, Classical IP and ARP over ATM (obsoletes RFC 1577)
Layer 3 Features
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ATM over MPLS (AToM) in AAL0 VC and VP mode
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No limitation on the maximum number of VCs per VPI, up to the maximum number of 4,096 total VCs
per interface (so there is no need to configure this limit using the atm vc-per-vp command, which is
required on other ATM SPAs)
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OAM flow connectivity using OAM ping for segment or end-to-end loopback
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PVC multicast (Protocol Independent Multicast [PIM] dense and sparse modes)
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PVC ranges (beginning in Cisco IOS XE Release 2.5)
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Supports oversubscription by default
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Routing protocols:
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Border Gateway Protocol (BGP)
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Enhanced Interior Gateway Routing Protocol (EIGRP)
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Interior Gateway Routing Protocol (IGRP)
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Integrated Intermediate System-to-Intermediate System (IS-IS)
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Open Shortest Path First (OSPF)
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Routing Information Protocol version 1 and version 2 (RIPv1 and RIPv2)
High-Availability Features
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Route Processor Redundancy (RPR)
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OSPF Nonstop Forwarding (NSF)
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Stateful Switchover (SSO)
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17 51
Overview of the ATM SPAs
Layer 3 Features