Description
Cisco IOS XE Software for Cisco ASR 900 Series Aggregation Services Routers provides a modular structure, enhancing quality and performance through separation of data plane and control plane. The SLASR903-I license activates the Metro IP Services feature set on the Cisco ASR 903 Router, supported as of Cisco IOS XE Software Release 3.5.0S.
Flexible Licensing Model
ASR 900 Series routers support Cisco IOS software activation, enabling a pay-as-services-grow model. All licenses except specific port licenses are per-chassis. The Metro IP Services license (SLASR903-I) includes all Metro Services capabilities plus advanced Layer 3 features: IP routing protocols (RIP, OSPF, EIGRP, BGP, IS-IS), Protocol-Independent Multicast (PIM SM, DM, SSM with mapping), BFD, multi-VRF CE with service awareness (ARP, ping, SNMP, syslog, trace-route, FTP, TFTP), and IEEE 1588-2008 Ordinary Clock and Transparent Clock.
Software Packages
- Cisco ASR 902/903 Series RSP2 IOS XE 16.12.1 Universal – No Payload Encryption (SASR900R2NPEK91612): Consolidated package with complete Cisco IOS XE Software feature support.
- Cisco ASR 902/903/907/914 Series RSP3 IOS XE 16.12.1 Universal – No Payload Encryption (SASR900R3NPEK91612): Consolidated package with complete support.
- Cisco ASR 903/907/914 Series RSP3 IOS XE 16.12.1 Universal – Payload Encryption (SASR900R3K91612): Includes payload encryption support.
Cisco IOS XE releases are time-based, delivered three times a year, with Standard or Extended Support durations.
Feature Sets Overview
Metro Services (baseline): QoS with deep buffers and HQoS, Layer 2 (802.1d, 802.1q), EVC, Ethernet OAM (802.1ag, 802.3ah), MST, REP, SyncE, IPv4/IPv6 host connectivity, MR-APS, mLACP.
Metro IP Services (SLASR903-I): All Metro Services plus IP routing, PIM, BFD, multi-VRF CE, IEEE 1588-2008 clocks.
Metro Aggregation Services: All Metro IP plus MPLS (LDP), MPLS VPN (MP-BGP), Segment Routing, MPLS TE/FRR, MPLS OAM, MPLS-TP, pseudowires (EoMPLS, CESoPSN, SAToP), VPLS/HVPLS, pseudowire redundancy.
Additional Feature Licenses
IPSEC License: Enables security for IP packets over unprotected networks. Requires reboot. Payload encryption available on RSP3 with specific packages.
ATM License: Activates ATM on TDM interfaces, including ATMoMPLS, local switching, interworking. Requires T1/E1, OC-3/STM-1, or OC-12/STM-4 card.
IEEE 1588-2008 BC/MC License: Activates Boundary/Master Clock functionality.
Comprehensive Supported Features
Ethernet Services: Ethernet Flow Point (EFP) with 802.1q, 802.1ad, Selective QinQ, VLAN classification, tag push/pop, Trunk-EFP; EPL/EVPL; IEEE 802.1s MST, PVST+, RPVST+; UDLD, LLDP, CDP, REP, ITU G.8032, 802.3ad/802.1ax LACP, mLACP, L2PT, VPLS/HVPLS/VPWS/EoMPLS, Routed PW/VPLS, static multicast MAC, IGMP snooping, Link Pass Through, PW redundancy, Hot Standby PW, Multi-Segment PW, FAT PW (RFC 6391), MC-LAG, Ethernet loopback, mLDPv4/v6, MAC Security, VPLS over port-channel/BDI, Segment Routing.
TDM, SONET/SDH, OTN, ATM: Clear/channelized T1/E1/T3/E3; channelized OC3/12/48/192/STM; HO/LO switching, APS/SR-APS/MR-APS/ACR/MSP/UPSR/SNCP, SDCC/LDCC/SSM, OTN (G.709), PW (LDP RFC4447, SAToP RFC4553, CEP RFC4842), TDM loopbacks/BERT, PW redundancy/Hot Standby/Multi-Segment, ATM PWE3, VCC/VP cell relay, cell packing, IMA v1.0/1.1, AAL0/AAL5, ATM CoS (CBR/UBR).
Layer 3 and MPLS: HSRP/VRRP, L3 routing on routed/BDI, CEF ECMP, OSPFv2/v3, BGPv4/4-byte ASN/TCP PMTU/PIC, IS-IS RFC7142, BFD variants, MPLS/FlexLSP/SRLG/sticky, EVPN VPWS, LDP LER/LSR, L3VPN, MPLS-TP, TE-FRR, RSVP-TE, P2MP TE, RSVP extensions RFC7551/3209, IP LFA/R-LFA FRR, IGMPv1/2/3/MLD, PIM-SM/SSM/mapping, MVPN Rosen/mLDP/GRE, SR.
IPv6: Hardware forwarding, addressing/discovery, ICMPv6, dual stack, static/OSPFv3, DHCPv6 relay/server/client, BFD, 6PE/6VPE, QoS.
QoS: MQC/HQoS, port shaper/LLQ w/EFP, 802.1p/IP ToS/DSCP/MPLS-TE RFC3564, ACL classification, 2R3C policing, shaping/CBWFQ/PQ/WRED, per-queue policing/shaping, RSVP CAC.
Timing: IEEE 1588-2008 OC/E2E TC/BC/PTP G.8265.1, hybrid clocking, T1/E1/OCn line timing, ACR/DCR, GNSS ToD/10MHz/1PPS, BITS, G.781/GR-1244 clock selection, SyncE ESMC G.8261/2/4, G.8275.2, SSM, SyncO, EPAR, Hop-by-Hop PTP redundancy.
OAM: 802.1ag CFM/802.3ah Link OAM, MPLS FM RFC6427/G-ACh RFC5586/BFD RFC6371/LSP Ping RFC6424, Y.1731 FM/PM (DM/SLM), Y.1564 SAT, E-LMI PE, CFM microwave ACM, TWAMP RFC5357 VRF.
Security: AAA TACACS+/RADIUS, SSHv2, MAC limiting/DAI/DHCP Snooping opt82, L3 ACL IPv4/IPv6, uRPF, MAC security, IPSEC/AES-CCM/ESP/IKEv1/2/VTI/PSK/DPD/Anti-Replay/RSAs/CRL/PKI/ESN, X.509/OCSP RFC6960, storm control.
Manageability: SNMP/MIBs, Dying Gasp, EEM, CDP/LLDP, local/remote SPAN/RSPAN, CLI, Cisco Prime Network fault/provisioning/performance.



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