Description
The Cisco ASR920-1588 is the IEEE 1588-2008 Boundary Clock (BC)/Master Clock (MC) License for Cisco ASR 920 Series Aggregation Services Routers. This per-chassis software license enables service providers to activate IEEE 1588-2008 BC or MC functionality, essential for precision timing and synchronization in metro access networks. One license is required for each chassis needing this advanced timing capability.
Cisco IOS XE Software Overview
Cisco IOS XE Software for Cisco ASR 920 Series provides a modular structure, separating data and control planes for enhanced performance. It supports Metro Access, Metro IP Access, and Advanced Metro IP Access feature sets, activated via licenses in a pay-as-you-grow model. ASR 920 routers are supported starting from Cisco IOS XE Software Release 3.13.0S.
Flexible Software Activation
Cisco ASR 920 routers utilize Cisco IOS software activation, allowing feature sets to be enabled with licenses. All licenses are per-chassis. Key license tiers include:
- Metro Access License: Advanced QoS, Carrier Ethernet Layer 2, SyncE, Ethernet OAM.
- Metro IP Access License: Adds IEEE 1588-2008 Ordinary/Transparent Clock, BFD, Layer 3 routing (RIP, OSPF, EIGRP, BGP, IS-IS), multi-VRF CE, multicast.
- Advanced Metro IP Access License: Adds MPLS-TP, MPLS, EoMPLS, CESoPSN, SAToP, MR-APS, mLACP, MPLS TE, MPLS FRR, MPLS VPN.
Additional licenses like ASR920-1588 specifically activate BC/MC for IEEE 1588-2008.
Consolidated Software Packages
Consolidated packages contain all features, activated by licenses. Example: SASR920NPEK9S provides basic support without payload encryption, including SSH and SNMPv3.
Cisco IOS XE Release Schedule
Time-based releases every four months with Standard (1-year support, 2 rebuilds) or Extended (2-year support, 4 rebuilds) options. Rebuilds for bug fixes only. Critical fixes as needed.
Major Features Supported
Cisco IOS XE on ASR 920 includes extensive capabilities across Ethernet Services, Layer 3/MPLS, IPv6, QoS, Timing, OAM, Security, and Manageability. Timing features enhanced by ASR920-1588 include IEEE 1588-2008 BC/MC over Ethernet/IP, PTP telecom profile (ITU-T G.8265.1), hybrid clocking, ToD/1PPS, BITS, SyncE with ESMC/SSM.
Part Numbers and Activation Keys
Available as paper PAK or E-Delivery (L- prefix). For ASR920-1588: ASR920-1588= (paper), L-ASR920-1588= (E-Delivery). Full suite includes feature sets (ASR920-S-M, etc.), upgrades (ASR920-S-M-I=, etc.), port licenses (ASR920-1G-6, etc.), and OC3 (FLSASR900-1OC3).
Warranty, Services, and Support
Standard Cisco warranty via Cisco.com. Services include Cisco Total Implementation Solutions (project management, deployment), Cisco SP Base Support (24/7 TAC, software updates), and more for optimized operations and reduced TCO.
With 10 units in stock, order the Cisco ASR920-1588 today for immediate dispatch. PDF datasheet available for detailed review.


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