A9K-2T20GE-E, Cisco ASR 9000 Line Card, 2x10GE/20xGE/Req. XFPs & SFPs

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  • Model: A9K-2T20GE-E
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    Overview
    End-of-Life Notice
    End-of-Life Notice
    A9K-2T20GE-E is officially EOL. Service support ends on 2020-05-31.
    For full lifecycle details, see A9K-2T20GE-E EOL.

    Cisco A9K-2T20GE-E Overview

    The Cisco A9K-2T20GE-E is a carrier-grade ASR 9000 line card designed for high-density 10GE and GE aggregation in service provider and large enterprise networks. It delivers 2×10GE and 20×GE combo ports with high queue resources, supporting advanced MPLS, L2VPN, and L3VPN services under Cisco IOS XR. With up to 512,000 queues, 512,000 policers, and 32,000 Ethernet flow points (EFPs), this module enables fine-grained QoS, scalable VPN deployment, and resilient Ethernet services across metro, edge, and core infrastructures.

    Product Highlights

    512,000
    Queues
    512,000
    Policers
    32,000
    EFPs

    Product Applications Scenarios

    Service Providers
    The A9K-2T20GE-E line card aggregates large volumes of 10GE and GE links, enabling scalable MPLS, L2VPN, and L3VPN services that cut backbone complexity and lower per-subscriber transport cost.
    Enterprise Network
    Enterprises use the A9K-2T20GE-E to consolidate WAN and data center edge links, applying granular QoS and security to protect critical applications while optimizing bandwidth utilization.
    Data Center
    In regional or carrier data centers this module supports high-density 10GE access, resilient MPLS cores, and hierarchical VPN services, improving service availability and reducing interconnect costs.

    Product Features Comparison

      Cisco A9K-2T20GE-E, Cisco ASR 9000 Line Card, 2×10GE/20×GE/Req. XFPs & SFPs Cisco A9K-40GE-E, Cisco ASR 9000 Line Card, 40×GE Ports/Extended Line Card/SFP Required Cisco A9K-4T-B, Cisco ASR 9000 Line Card, 4×10GE ports/XFP slots/Hot swappable Cisco SPA-2XOC48POS/RPR, Cisco ASR 9000 Adapter, 2×OC48/STM16 POS, RPR support, Shared Port Adapter
    Model A9K-2T20GE-E, Cisco ASR 9000 Line Card, 2×10GE/20×GE/Req. XFPs & SFPs A9K-40GE-E, Cisco ASR 9000 Line Card, 40×GE Ports/Extended Line Card/SFP Required A9K-4T-B, Cisco ASR 9000 Line Card, 4×10GE ports/XFP slots/Hot swappable SPA-2XOC48POS/RPR, Cisco ASR 9000 Adapter, 2×OC48/STM16 POS, RPR support, Shared Port Adapter
    Brand Cisco Cisco Cisco Cisco
    Module Type Line Card Line Card Line Card Module
    Port Density 2×10GE + 20×GE 40×GE 4×10GE n/a
    Interface Speed 10 Mbps–10 Gbps 10 Mbps–10 Gbps 10 Mbps–10 Gbps n/a
    Forwarding Capacity n/a n/a n/a n/a
    Fabric Interface n/a n/a n/a n/a
    Power Draw 350 W–630 W 350 W–630 W 350 W–630 W 18 W max

    Optional Add-ons

    Model Number Description
    A9K-MPA-20X1GE Cisco modular port adapter providing 20×GE ports for ASR 9000 line card expansion.
    XFP-10G-LR Cisco 10GBASE-LR XFP optical transceiver for long-range 10GE uplinks on ASR 9000.
    GLC-SX-MMD Cisco 1000BASE-SX SFP module for short-reach Gigabit Ethernet access on ASR platforms.

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Cisco A9K-2T20GE-E Specification

    Model
    A9K-2T20GE-E
    Brand
    Cisco
    Part Number
    A9K-2T20GE-E
    Product Description
    2-Port 10GE, 20-Port GE High Queue Combo Line Card, requires XFPs for 10GE, SFPs for GE
    Total queues
    376,000 - 512,000
    Policers
    256,000 - 512,000
    Ethernet flow points (EFPs)
    32,000
    Cisco IOS XR Software support
    - Modular software design: Cisco IOS XR Software provides routing-system scalability, high availability, service isolation, and manageability for next-generation networks.
    - Operating system infrastructure protection: Microkernel architecture keeps only critical functions in the kernel to prevent failures in applications, file systems, and device drivers from causing major disruption.
    - Process and thread protection: Each process and thread runs in its own protected memory space, communicating through secure, version-controlled APIs to limit the impact of failures.
    - Process restart: Critical control-plane processes can restart individually, without rebooting the OS, helping to maintain continuous system availability.
    - State checkpointing: Maintains memory and critical operating state across process restarts so routing adjacencies and signaling state are preserved during an RSP switchover.
    Flexible Ethernet services
    - Ethernet virtual connections (EVCs): EVC-based Ethernet services for specific service types or users, supporting MPLS-based L2VPNs and native Ethernet switching.
    - Flexible VLAN classification: Single-tagged VLANs, double-tagged VLANs (QinQ, IEEE 802.1ad), contiguous VLAN ranges, and noncontiguous VLAN lists mapped into EFPs.
    - IEEE bridging: Native bridging based on IEEE 802.1Q, IEEE 802.1ad, IEEE 802.1ah, and QinQ VLAN encapsulation.
    - IEEE 802.1s Multiple Spanning Tree (MST): Extends IEEE 802.1w RSTP to multiple spanning trees for fast convergence and load balancing.
    - MST Access Gateway: Provides fast, resilient aggregation and connection to Ethernet-based access rings.
    L2VPN services
    - Virtual Private LAN Services (VPLS): Connects multiple sites in a single bridged domain over an IP/MPLS network, presenting a simple Ethernet interface and allowing flexible bandwidth not tied to physical ports.
    - Hierarchical VPLS (HVPLS): Adds hierarchy at the VPLS edge for scale; supports QinQ access and Ethernet over MPLS (pseudowire) access.
    - Virtual Private Wire Service (VPWS) with Ethernet over MPLS (EoMPLS): Transports Ethernet frames over an MPLS core using pseudowires from EFPs or whole ports to remote interfaces or subinterfaces.
    - Pseudowire redundancy: Defines backup pseudowires to protect primary pseudowires on failure.
    - G.8032: Sub-50 ms protection for Ethernet traffic in ring topologies, compliant with ITU-T G.8032 v2 on Cisco ASR 9000 Series.
    - Multisegment pseudowire stitching: Interworks two pseudowires to form a cross-connect relationship.
    Multicast
    - IPv4 Multicast: Supports IGMPv2/v3, PIM-SSM, PIM-SM, PIM SSM Mapping, MSDP, Multicast VPN, and Anycast RP.
    - IGMP v2 and v3 snooping: Layer 2 snooping on VLAN or pseudowire level, summarizing joins upstream so only watched channels are sent downstream, ideal for broadband video deployments.
    OA&M
    - Ethernet OA&M (EOAM) IEEE 802.3ah: Physical-link OA&M for monitoring link health and assisting in fault isolation; works with IEEE 802.1ag for fast link-failure detection and signaling.
    - EOAM IEEE 802.1ag: Ethernet Connectivity Fault Management (E-CFM) protocols and procedures to discover and verify paths through 802.1 bridges and LANs.
    - EOAM ITU Y.1731: Fault Management (FM) and Performance Monitoring (PM) to verify Ethernet networks and measure delay, latency, and loss for SLA support.
    - Ethernet LMI (E-LMI): Protocol between CE and PE on the UNI link to notify the CE of connectivity status and configuration of Ethernet services on the port.
    - MPLS OA&M: Supports LSP ping, LSP traceroute, and VCCV for MPLS OA&M.
    Layer 3 routing
    - IPv4 routing: Supports BGP, IS-IS, OSPF, RIP, static routes, IPv4 Multicast, Routing Policy Language (RPL), HSRP, and VRRP.
    - IPv6 routing: Supports OSPFv3, IS-IS, VRRPv6, DHCPv6 relay, and static IPv6 routing.
    - BGP PIC: BGP Prefix Independent Convergence for fast BGP route convergence.
    MPLS L3VPN
    - MPLS L3VPN: Scalable IPv4 Layer 3 VPN backbone services for IP VPNs, supporting value-added services such as applications, data hosting, e-commerce, and telephony for business customers.
    - Carrier supporting carrier (CSC): Allows an MPLS VPN provider to use another backbone while maintaining private address space for customer VPNs, per IETF RFC 4364.
    - Selective VRF Download: Downloads VRF FIB entries only to line cards with VRF membership to increase chassis FIB scale and avoid unnecessary entries.
    - 6PE and 6VPE: Introduce IPv6 from the edge over an IPv4/MPLS backbone without IPv6 addressing restrictions, minimizing risk and operational cost.
    MPLS Traffic Engineering (TE)
    - MPLS Traffic Engineering: Supports TE-FRR, RSVP, LDP, and T-LDP.
    - MPLS TE Preferred Path: Maps pseudowires to specific TE tunnels, cross-connecting attachment circuits to MPLS TE tunnel interfaces instead of remote PE IP addresses.
    - MPLS TE Auto-Bandwidth: Automatically adjusts TE tunnel bandwidth based on measured traffic load.
    - Point-to-Multipoint (P2MP) Traffic Engineering: Forwards MPLS traffic from one source to multiple destinations with explicit paths and FRR protection for P2MP TE sub-LSPs.
    High availability
    - MPLS TE-FRR: Provides Layer 3 protection switching and temporary rerouting around failed links, nodes, or paths for MPLS LSPs.
    - Bidirectional Forwarding Detection (BFD): Fast forwarding-path failure detection for all media, encapsulations, topologies, and routing protocols.
    - IEEE 802.3ad Link Aggregation Bundles: Bundles multiple links for resiliency and load balancing across member links.
    - Multichassis Link Aggregation Group (MC-LAG): Standards-based 802.3ad bundle to a pair of Cisco ASR 9000 routers that appear as a single router, with rapid restoration on link or node failure, supporting business L2VPN, L3VPN, residential backhaul, mobile aggregation, and service provider edge.
    Manageability
    - Cisco IOS XR manageability: Modular CLI, SNMP, Cisco Discovery Protocol (CDP), Link Layer Discovery Protocol (LLDP), and native XML interfaces.
    - Smart Call Home (SCH): Proactive support that detects and reports issues before they affect services for faster troubleshooting and resolution.
    - Cisco Active Network Abstraction (ANA): Vendor-neutral management framework that discovers and tracks network elements in near real time, aggregating VNEs into a virtual network and offering simplified OSS integration, a common resource management infrastructure, and consistent procedures and interfaces.
    Security
    - Cisco IOS XR Software: Provides ACLs, control-plane protection, routing authentication, AAA and TACACS+, SSH, SNMPv3, and advanced RPL support.
    - Layer 2 ACLs: Filters packets under an EVC based on MAC addresses.
    - Layer 3 ACLs: Matches IPv4 packets based on Layer 3 attributes.
    - Additional security features: 802.1ad L2CP and BPDU filtering; MAC limiting per EFP or bridge domain; unicast, multicast, and broadcast storm-control on any interface or port; Unknown Unicast Flood Blocking (UUFB); DHCP snooping; URPF; control-plane security; Dynamic ARP Inspection (DAI); and IP Source Guard (IPSG).
    Connectivity
    10 Mbps, 100 Mbps, 1 Gbps, and 10 Gbps IEEE 802.3 Ethernet
    Memory
    4 GB DRAM
    Options
    Available as low queue, base, or extended line card.
    Physical dimensions (H × W × D)
    14 × 1.72 × 20.5 in (35.56 × 4.37 × 52.07 cm)
    Card weight range
    14 - 19 lb (6.35 - 8.62 kg)
    Power consumption
    Maximum 350 W - 630 W (depending on card type); typical 310 W - 565 W (depending on card type)
    Operating temperature (nominal)
    5 to 40 °C (41 to 104 °F)
    Operating temperature (short-term)
    -5 to 55 °C (23 to 131 °F)
    Operating humidity (nominal)
    10% to 85% relative humidity
    Storage temperature
    -40 to 70 °C (-40 to 158 °F)
    Storage humidity (relative)
    5% to 95% relative humidity (not to exceed 0.024 kg water per 1 kg of dry air)
    Operating altitude
    -60 to 4000 m (up to 2000 m conforms to IEC, EN, UL, and CSA 60950 requirements)
    Network Equipment Building Standards (NEBS)
    Designed to meet SR-3580 NEBS Criteria Levels (Level 3); GR-1089-CORE NEBS EMC and Safety; GR-63-CORE NEBS Physical Protection; VZ.TPR.9205 Verizon TEEER.
    ETSI standards
    Designed to meet EN 300 386 Telecommunications Network Equipment (EMC); ETSI 300 019 Storage Class 1.1; ETSI 300 019 Transportation Class 2.3; ETSI 300 019 Stationary Use Class 3.1; EN 55022 Information Technology Equipment (Emissions); EN 55024 Information Technology Equipment (Immunity); EN 50082-1 / EN 61000-6-1 Generic Immunity Standard.
    EMC standards
    Designed to meet FCC Class A; ICES-003 Class A; AS/NZS 3548 Class A; CISPR 22 (EN 55022) Class A; VCCI Class A; BSMI Class A; IEC/EN 61000-3-2 Power Line Harmonics; IEC/EN 61000-3-3 Voltage Fluctuations and Flicker; EN 50121-4 Railway EMC.
    Immunity standards
    Designed to meet IEC/EN 61000-4-2 Electrostatic Discharge Immunity (8 kV contact, 15 kV air); IEC/EN 61000-4-3 Radiated Immunity (10 V/m); IEC/EN 61000-4-4 Electrical Fast Transient Immunity (2 kV power, 1 kV signal); IEC/EN 61000-4-5 Surge AC Port (4 kV CM, 2 kV DM); IEC/EN 61000-4-5 Signal Ports (1 kV); IEC/EN 61000-4-5 Surge DC Port (1 kV); IEC/EN 61000-4-6 Immunity to Conducted Disturbances (10 Vrms); IEC/EN 61000-4-8 Power Frequency Magnetic Field Immunity (30 A/m); IEC/EN 61000-4-11 Voltage dips, short interruptions, and voltage variations; EN 50121-4 Railway EMC.
    Safety standards
    Designed to meet UL/CSA/IEC/EN 60950-1; IEC/EN 60825 Laser Safety; ACA TS001; AS/NZS 60950; FDA Code of Federal Regulations Laser Safety.
    Weight
    kg

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    Q&A

    Questions & Answers

    What common troubleshooting steps are there for the Cisco ASR 9000 Line Card A9K-2T20GE-E?

    Common steps include checking the connections, ensuring proper firmware, and rebooting the line card.

    What accessories are available for the Cisco ASR 9000 Line Card A9K-2T20GE-E?

    Accessories include compatible XFPs, SFPs, and chassis mounting kits.

    How does the Cisco ASR 9000 Line Card A9K-2T20GE-E compare with similar products?

    Compared to similar products, the A9K-2T20GE-E offers a balanced mix of 10GE and GE ports, making it versatile and cost-effective.

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    Absolutely. As a multi-brand authorized distributor, router-switch.com is directly certified by leading technology manufacturers. We guarantee 100% genuine products, competitive pricing, and full manufacturer warranties and support.

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