Full English Description for Cisco ASR 1004

1. Official Short Order Description (Datasheet Standard Format)

ASR 1004: Cisco ASR 1000 Series 4RU Mid-Range Modular Aggregation Services Router, fully FRU field-replaceable architecture with dedicated single Route Processor (RP1) slot, single Embedded Services Processor (ESP) slot, dual SIP SPA Interface Processors supporting total 8 half-height SPA shared port adapter slots, built-in BITS timing clock interface, dual redundant hot-swappable AC/DC power supplies and redundant fan trays, default 2GB DDR memory upgradable to 4GB, 1GB industrial eUSB bootflash plus optional internal HDD/SSD mass storage, modular Cisco IOS XE OS, scalable ESP throughput options (5G / 10G / 40Gbps), integrated hardware crypto acceleration, full carrier-grade MPLS, Catalyst SD-WAN/IWAN, NGFW security and broadband aggregation capabilities, designed for medium-large enterprise WAN aggregation, multi-tenant service provider POP core, broadband BRAS aggregation, large-scale DMVPN/FlexVPN VPN termination and central-site hybrid cloud interconnection deployments.

2. Complete Detailed Product Overview

Product Line Positioning

Cisco ASR 1004 is the mid-range modular 4RU chassis of ASR 1000 aggregation router family, positioned above 2RU ASR 1002 series and below high-capacity 6RU ASR 1006 chassis. It adopts a fully discrete FRU modular design: separate RP route processor, ESP forwarding plane, SIP SPA interface cards, power supplies and fan trays are all field-replaceable without full chassis replacement, delivering flexible mixed-media SPA expansion for fiber, copper, T1/E1 PRI, T3 and POS trunk circuits. It inherits the unified IOS XE modular software architecture of the entire ASR 1000 platform, supporting carrier-grade multi-tenant MPLS, large-scale SD-WAN aggregation and broadband BRAS convergence for medium core aggregation sites.

Modular Slot Architecture (Core Hardware Layout)

1 × Route Processor (RP1) Slot

Dedicated FRU slot for ASR1000-RP1 control plane module, handles routing protocols, device orchestration, system management and IOS XE control-plane processing. Memory expandable from base 2GB DDR to max 4GB DDR ECC memory for medium-scale BGP routing tables.

1 × Embedded Services Processor (ESP) Forwarding Slot

Supports three official ESP forwarding modules for performance scaling:

ASR1000-ESP5: 5 Gbps aggregate IMIX forwarding throughput
ASR1000-ESP10: 10 Gbps aggregate IMIX forwarding throughput
ASR1000-ESP40: 40 Gbps aggregate IMIX forwarding throughput

All ESP modules integrate dedicated Nitrox hardware crypto co-processor for wire-speed IPsec, FlexVPN and DMVPN VPN acceleration.

Dual SIP SPA Interface Processors (Total 8 Half-Height SPA Slots)

Two independent SIP trays, each hosting four half-height hot-swappable SPA slots, supporting OIR (Online Insertion and Removal) without chassis power cycle. Compatible full SPA portfolio:

Ethernet SPAs: 4×1GE SFP, 2×10GE SFP+ high-density fiber aggregation modules
Channelized trunk SPAs: 8×T1/E1 PRI, 4×T3 serial voice/WAN trunk modules
Optical SPAs: OC-3 / OC-12 POS/ATM fiber uplink modules
Async serial SPAs for legacy industrial SCADA and serial equipment integration

Fixed Timing & Management Auxiliary Interfaces

1× BITS RJ45 timing interface compliant with GR-1244-CORE Stratum 3 clock standard for carrier central office and substation synchronization
1×10/100/1000BASE-T RJ45 out-of-band management Ethernet port for isolated remote chassis monitoring
Dual console access: RJ45 serial console + Mini-USB Type B console port for local offline configuration
1×RJ45 AUX dial-out port for backup analog modem out-of-band management
2×USB 2.0 Type-A host ports for license import, offline configuration backup and firmware image upload
Front-panel multi-color LED array monitoring power supply, fan health, SPA slot link status, timing lock, crypto engine activity and system fault alarms

Memory & Storage

Route Processor Memory: Base 2GB DDR industrial memory, field-upgradable to 4GB DDR ECC memory, supports up to 1 million IPv4/IPv6 routing table entries at maximum memory configuration
Boot Flash: Fixed 1GB rugged industrial eUSB internal flash for IOS XE modular system images, crash dumps and base NVRAM logging
Expandable Mass Storage: Optional internal 40GB HDD or industrial SSD tray for offline telemetry log retention, NetFlow/IPFIX streaming telemetry archiving and offline edge data buffering

Power, Mechanical & Environmental Specifications

Form Factor: Standard 4RU 19-inch four-post rack-mount chassis
Dimensions: 178mm H × 438mm W × 571.5mm D, chassis-only weight 8.16kg; fully loaded weight ~22.7kg
Cooling: Dual hot-swappable redundant fan trays with front-to-back data center airflow, OIR-supported zero-downtime fan replacement
Power Supply Architecture: Dual hot-swappable wide-range AC/DC/HVDC power supplies (N+1 redundant) for carrier-grade high availability; max AC power draw 960W, max DC power draw 1020W
Operating Temperature: 5°C ~ +40°C continuous indoor data center / equipment room operation
Storage Temperature: -40°C ~ +70°C
Humidity: 10%–85% RH non-condensing operating humidity
Compliance: UL 62368-1, IEC 60950-1, NEBS GR-1089 / GR-63, FCC Class A, CE certified for carrier central office and enterprise core deployments

Official Performance Benchmarks

Aggregate IMIX forwarding throughput: 5 Gbps (ESP5) / 10 Gbps (ESP10) / 40 Gbps (ESP40)
Hardware-accelerated IMIX IPsec VPN throughput: Up to 8 Gbps (ESP40)
Maximum concurrent SD-WAN SVTI overlay tunnels: Up to 8,000 tunnels with 4GB RP memory
Total concurrent stateful firewall sessions: Up to 2 million sessions
Full hardware offload support for NBAR2 AVC deep packet inspection, hierarchical MQC QoS, stateful NAT, MACsec link encryption and multicast replication

Software & Core Supported Capabilities (Modular IOS XE)

Carrier-Grade Routing & Full MPLS Suite

IPv4/IPv6 dual-stack forwarding, BGP, OSPF, EIGRP, IS-IS, Segment Routing, BFD fast convergence; complete MPLS feature stack including L3VPN, VPLS, EoMPLS, multi-tenant route reflector and broadband L2TP BRAS termination for service provider multi-tenant private WAN architectures.
Enterprise & Carrier Catalyst SD-WAN / IWAN Hybrid Multi-WAN Convergence

Full IWAN and modern SD-WAN feature support, zero-touch provisioning via vManage orchestrator, application-aware multi-path routing, multi-hybrid wired/wireless WAN aggregation, seamless integration with Cisco Umbrella SASE cloud security and ThousandEyes end-to-end full-path network monitoring.
Unified Integrated NGFW Industrial & Carrier Security Stack

Hardware wire-speed VPN acceleration, zone-based stateful firewall, IDS/IPS threat inspection, advanced malware protection (AMP), CGNAT carrier-grade large-scale address translation, AAA RADIUS/TACACS+, TLS encrypted remote management and IT/OT traffic segmentation.
Application Visibility & Hierarchical QoS Management

NBAR2 full application signature recognition, hierarchical MQC traffic shaping/policing, IP SLA performance monitoring, NetFlow/IPFIX streaming telemetry for centralized traffic analytics and capacity planning for broadband aggregation networks.
Enterprise & Carrier High Availability Mechanisms

NSF Nonstop Forwarding, SSO Stateful Switchover, ISSU In-Service Software Upgrade for zero-downtime firmware updates, HSRP/VRRP/GLBP gateway redundancy, sub-second BFD failure detection for fast WAN convergence.
Multi-Tenant Automation & Programmability

CLI/SSH console access, REST API, NETCONF/YANG data models, streaming telemetry, native integration with Catalyst Center and NSO Network Services Orchestrator for mass enterprise and multi-tenant service provider lifecycle automation.

Typical Deployment Scenarios

Medium-large enterprise regional core WAN aggregation hubs, service provider medium POP multi-tenant virtual CPE, broadband multi-subscriber BRAS aggregation nodes, nationwide retail SD-WAN central core aggregation gateways, financial multi-region MPLS convergence core routers, solar/wind renewable energy central control room aggregation sites, hybrid cloud high-capacity interconnection gateways requiring large SPA modular expansion for bulk fiber, T1/E1 and POS trunk circuits.

3. E-commerce Short Marketing Description

Cisco ASR 1004 4RU Mid-Range Modular Aggregation Services Router, fully FRU RP/ESP/SIP modular architecture, scalable ESP throughput up to 40Gbps, RP1 with 2GB DDR memory upgradable to 4GB, 1GB eUSB bootflash with optional HDD/SSD mass storage, dual SIP trays providing 8 half-height SPA expansion slots, built-in BITS timing clock, dual redundant PSU & fan trays, modular IOS XE OS with full MPLS, Catalyst SD-WAN IWAN and integrated NGFW security, ideal for enterprise core aggregation, service provider medium POP and broadband BRAS multi-tenant convergence deployments.

4. Product Catalog Keyword Tags

Cisco, ASR 1004, ASR 1000 Series, 4RU Modular Aggregation Services Router, Full FRU Discrete RP/ESP/SIP Architecture, 8 Half-Height SPA Shared Port Adapter Slots, BITS Stratum 3 Timing Clock, Dual Redundant PSU & Fan Trays, NEBS GR-1089 Certified, Scalable 5/10/40 Gbps ESP Forwarding, IOS XE Modular Operating System, Carrier-Grade MPLS L3VPN, Catalyst SD-WAN / IWAN Support, Broadband BRAS Aggregation Gateway, Medium Enterprise WAN Core Router, Multi-Tenant Service Provider POP CPE

Naming Rule Explanation

ASR = Aggregation Services Router carrier/enterprise multi-service modular WAN aggregation platform
1004 = Mid-range 4RU modular chassis variant of ASR 1000 family (8 SPA slots, single RP/ESP layout, positioned between 2RU ASR 1002 and 6RU ASR 1006)


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