Layer 3 Features - Cisco ASR 1000 Series Software Configuration Manual

Overview of the ATM SPAs
ATM shaping is supported, but class queue-based shaping is not.
Note
• ATM multipoint connections (beginning in Cisco IOS XE Release 2.5)
• ATM point-to-point connections
• Explicit Forward Congestion Indication (EFCI) bit in the ATM cell header
• AToM VP and VC Mode Cell Relay support
•

Layer 3 Features

• ATM over MPLS (AToM) in AAL0 VC and VP mode
• No limitation on the maximum number of VCs per VPI, up to the maximum number of 4,096 total VCs
• OAM flow connectivity using OAM ping for segment or end-to-end loopback
• PVC multicast (Protocol Independent Multicast [PIM] dense and sparse modes)
• PVC ranges (beginning in Cisco IOS XE Release 2.5)
• Supports oversubscription by default
• Routing protocols:
High-Availability Features
• Route Processor Redundancy (RPR)
• OSPF Nonstop Forwarding (NSF)
• Stateful Switchover (SSO)
OL-14127-17
RFC 2225, Classical IP and ARP over ATM (obsoletes RFC 1577)
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)
◦ Border Gateway Protocol (BGP)
◦ Enhanced Interior Gateway Routing Protocol (EIGRP)
◦ Interior Gateway Routing Protocol (IGRP)
◦ Integrated Intermediate System-to-Intermediate System (IS-IS)
◦ Open Shortest Path First (OSPF)
◦ Routing Information Protocol version 1 and version 2 (RIPv1 and RIPv2)
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Layer 3 Features
Everest 16.5
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