Cisco AIM-VPN/SSL-2 Full Official Technical Specification Document

1. Product Overview

Official Full Designation

Core Definition

SKU Naming Breakdown

1. AIM: Advanced Integration Module, dedicated internal router expansion slot form factor for specialized hardware co-processors
2. VPN/SSL: Combined acceleration support for both IPsec site-to-site VPN and SSL (AnyConnect) remote access VPN cryptographic workloads
3. 2: Second-generation dual independent security processing engine design, upgraded performance versus first-gen AIM-VPN/SSL-1
4. =: Optional suffix for standalone spare-only AIM spare kits (AIM-VPN/SSL-2=)

Product Lifecycle Notice

• Official Global Release Year: 2004
• End-of-Sale (EoS) Status: Discontinued; Cisco permanently halted production of brand-new AIM-VPN/SSL-2 hardware units
• Direct Upgrade Replacement Models: ISR G2 onboard integrated VPN acceleration, ISR 4000 series built-in crypto processors, dedicated ISR AIM-VPN/SSL-3 third-gen acceleration modules
• Minimum Supported IOS Software Version: Cisco IOS Release 12.3(11)T for full dual-engine IPsec + SSL VPN acceleration functionality; base IPsec acceleration available in earlier 12.2T IOS trains
• Software Maintenance Status: Only critical security vulnerability patches are released for customers holding active Cisco DNA service contracts; no new feature enhancements will be developed
• Legacy Status: End-of-sale legacy hardware; certified refurbished spare modules, validated legacy IOS firmware images and 24×7 Cisco TAC engineering technical support remain available through authorized Cisco distribution partners

Supported Router Platform Compatibility

1. Cisco 1700 Series Multiservice Routers (1721, 1751, 1760)
2. Cisco 2600 Series Multiservice Routers (2610, 2611, 2620, 2621, 2650, 2651, 2600XM, 2691)
3. Cisco 3600 Series Multiservice Routers (3620, 3640, 3660)
4. Cisco 3700 Series Multiservice Routers (3725, 3745)

Deployment Restrictions

1. No certified hot-swap capability: Power cycling the entire router chassis is mandatory for safe installation or replacement; live insertion/removal triggers hardware bus errors, VPN tunnel outages and persistent IOS system error logging.
2. IOS feature license dependency: Full IPsec and SSL VPN acceleration requires an IOS image that includes Advanced Security or Advanced Enterprise feature sets; base IP Base IOS images lack VPN cryptographic support and cannot utilize the AIM acceleration hardware.
3. Slot compatibility limitation: The AIM card only fits dedicated internal AIM expansion slots; cannot be installed into external WIC/VWIC/EHWIC expansion bays. Each router chassis supports a limited maximum number of AIM modules based on internal bus architecture.
4. Voice coexistence resource constraint: When deployed alongside voice DSP AIM modules (AIM-VOICE), total router internal bus bandwidth is shared; high-density VPN tunnel loads may slightly limit maximum concurrent voice call capacity.

Standard Factory Complete Bundle Contents

1. AIM-VPN/SSL-2 second-generation dual-engine VPN acceleration Advanced Integration Module card with internal edge connector for router AIM slot bus interface
2. Anti-static ESD handling storage bag and protective foam packaging
3. Quick-start hardware installation guide covering AIM slot insertion/removal, ESD protection procedures, IOS VPN acceleration feature configuration, IPsec tunnel group and AnyConnect SSL VPN profile setup examples
4. Global regulatory compliance, safety, and electromagnetic interference (EMI) certification documentation packet

Core Integrated Functional Capabilities

1. Dual Independent Dedicated Crypto Acceleration Engines: Two isolated security processing co-processors fully offload all CPU-intensive symmetric encryption, asymmetric public-key cryptography and secure hash authentication workloads for concurrent IPsec and SSL VPN tunnels, eliminating router general-purpose CPU bottlenecks under heavy encrypted traffic.
2. Full IPsec Site-to-Site VPN Hardware Offload Support: Accelerates all standard IPsec cryptographic primitives: AES-128/AES-192/AES-256, 3DES, DES symmetric encryption; SHA-1, SHA-256, MD5 integrity hash authentication; Diffie-Hellman DH1/DH2/DH5/DH7 key exchange; IKEv1/IKEv2 tunnel negotiation processing.
3. Full SSL (AnyConnect) Remote Access VPN Hardware Offload Support: Hardware acceleration for TLS 1.0/1.1/1.2 session establishment, RSA/ECDSA certificate authentication, AES/3DES TLS payload encryption, SHA hash integrity verification for AnyConnect Secure Mobility Client remote worker SSL VPN tunnels.
4. High-Density Concurrent VPN Tunnel Scalability: By offloading all crypto processing, the AIM-VPN/SSL-2 enables drastically higher simultaneous tunnel counts for mixed IPsec site-to-site links and AnyConnect SSL remote access sessions versus router CPU-only VPN deployments.
5. Full IOS VPN Feature Compatibility: Natively integrates with all Cisco IOS VPN feature suites, including static/dynamic IPsec site-to-site tunnels, IKE keepalives, dead peer detection (DPD), AnyConnect SSL VPN profiles, group policies, split tunneling, full tunnel remote access, certificate-based PKI authentication, pre-shared key authentication, and VPN QoS traffic marking.
6. Unified Router Resource Preservation: Offloading cryptographic workloads reserves the router’s main CPU for core enterprise services: static/dynamic IP routing (RIP, EIGRP, OSPF), zone-based IOS firewall, NAT/PAT, IPSec VPN tunneling, VoIP voice processing, QoS traffic shaping/policing, AAA identity authentication and SNMP network monitoring.
7. Transparent Hardware Acceleration Operation: No complex manual traffic classification configuration required; the IOS VPN stack automatically routes all IPsec and SSL VPN cryptographic processing tasks to the AIM hardware accelerator without disrupting existing tunnel or remote access policy configurations.
8. SNMP MIB Monitoring Support: Implements standard Cisco VPN acceleration SNMP MIBs for remote monitoring of AIM hardware status, crypto engine utilization, total encrypted throughput, active IPsec/SSL tunnel counters and hardware fault alarm reporting.

2. Hardware & Performance Specifications

Core Dual Crypto Engine VPN Acceleration Performance

• Hardware Architecture: Dual independent dedicated security co-processing engines on a single AIM module, shared internal PCI-style router backplane bus interface
• Supported Symmetric Encryption Algorithms (Hardware-Accelerated): DES, 3DES, AES-128, AES-192, AES-256
• Supported Integrity Hash Algorithms (Hardware-Accelerated): MD5, SHA-1, SHA-256
• Supported Public-Key & Key Exchange Algorithms (Hardware-Accelerated): RSA (512/1024/2048-bit), ECDSA, Diffie-Hellman DH1, DH2, DH5, DH7
• Supported VPN Protocol Acceleration: IKEv1, IKEv2, IPsec ESP/AH tunnels, TLS 1.0/1.1/1.2 (AnyConnect SSL VPN)
• Typical Maximum Concurrent Tunnel Scalability (Dual Engine Full Acceleration):
  • IPsec Site-to-Site Tunnels: Up to 1,000 concurrent tunnels
  • AnyConnect SSL Remote Access Sessions: Up to 500 concurrent remote worker tunnels
• Aggregate Encrypted VPN Throughput Rating: Up to 120 Mbps bidirectional IPsec/SSL combined encrypted traffic throughput

Hardware Indicator Definitions

1. POWER Status Indicator: Solid green = AIM module receives stable power supply from router backplane bus; off = No power detected, hardware fault or improperly seated module
2. ACT Activity Indicator: Blinking green = Active crypto acceleration workload processing (IPsec/SSL VPN encryption/decryption traffic); steady off = No active VPN tunnel crypto processing

Electrical & Thermal Specifications

Power Consumption

• Typical operating power draw under mixed IPsec + SSL VPN medium tunnel load: ~6 Watts
• Maximum full-load power consumption at peak 120 Mbps aggregate encrypted VPN throughput: ~9 Watts
• Power Delivery: Powered exclusively through the router chassis internal AIM slot backplane bus; no external power supply connectors mounted on the AIM module

Thermal & Environmental Operating Parameters

• Certified Continuous Operating Temperature Range: 0°C to 40°C (32°F to 104°F) standard enterprise branch equipment room environment
• Extended Validated Short-Term Operating Temperature: 0°C to 55°C (32°F to 131°F)
• Storage & Transport Temperature Range: -40°C to 70°C (-40°F to 158°F)
• Operating Relative Humidity: 5% to 85% RH, non-condensing
• Storage Relative Humidity: 5% to 95% RH, non-condensing
• Operating Altitude: Certified operational range -150 m to 2,000 m (-500 ft to 6,500 ft); extended validated range up to 3,000 m (10,000 ft)
• Cooling Design: Fanless passive heat dissipation architecture without onboard cooling fans; cooling airflow supplied by the host router’s internal chassis fan assembly
• Airflow Direction: Internal horizontal chassis airflow passing over the AIM module passive heat sink

Physical Form Factor & Weight

• Form Factor: Standard low-profile internal AIM (Advanced Integration Module) edge-connector expansion card form factor for legacy 1700/2600/3600/3700 series router internal dedicated AIM slots
• Bare AIM Module Net Weight (without packaging, cables and accessories): Approximately 45 grams
• Physical Dimensions: Height 0.6 in, Width 2.8 in, Depth 3.6 in

3. Regulatory & Compliance Certifications

1. Safety Standards: UL 60950-1, CSA C22.2 No. 60950-1, EN 60950-1, IEC 60950-1, GB 4943 Chinese national safety standard
2. EMC & EMI Standards: FCC CFR Title 47 Part 15 Class A, VCCI Class A ITE, EN55022 Class A, CISPR 22 Class A, ICES-003 Class A, CISPR 24, EN 61000 series electromagnetic immunity standards
3. Telecommunications & VPN Security Compliance: IPsec IETF RFC standards, TLS/SSL IETF RFC standards, FIPS 140-2 Level 1 cryptographic module compliance
4. Environmental Directive: EU RoHS hazardous substance restriction compliance

4. Core Deployment Advantages

1. Dual Independent Crypto Engine High-Density VPN Acceleration Architecture: Two fully isolated dedicated security co-processors integrated within a single internal AIM expansion slot, doubling VPN cryptographic processing capacity versus first-generation single-engine AIM-VPN/SSL-1 modules. This design maximizes internal router slot utilization and eliminates the need to deploy multiple separate AIM cards to support high concurrent IPsec and SSL VPN tunnel workloads, reducing hardware capital expenditure and internal chassis bus resource consumption.
2. Unified Concurrent IPsec + SSL VPN Hardware Offload: The dual-engine architecture simultaneously accelerates both IPsec site-to-site inter-branch VPN tunnels and AnyConnect SSL remote access worker tunnels, supporting mixed hybrid VPN deployment models common in enterprise networks. All cryptographic processing is fully offloaded from the router’s main general-purpose CPU, eliminating CPU bottlenecks that limit tunnel count and encrypted WAN throughput on CPU-only VPN router deployments.
3. Massive Scalability Improvements for Enterprise VPN Workloads: Hardware acceleration drastically increases the maximum number of concurrent IPsec site-to-site tunnels and AnyConnect SSL remote access sessions supported by compatible legacy ISR routers, enabling large-scale multi-branch IPsec VPN architectures and enterprise-wide remote worker SSL VPN deployments without costly router hardware upgrades or chassis replacements.
4. Router Main CPU Resource Preservation for Core Enterprise Services: By shifting all resource-intensive AES/3DES encryption, SHA hash authentication and RSA/DH key exchange workloads to dedicated AIM crypto hardware, the router’s primary CPU remains available to process critical core enterprise network services: dynamic routing protocols, stateful IOS firewall inspection, NAT address translation, VoIP voice call processing, QoS traffic management and AAA user authentication. This prevents VPN tunnel traffic from starving other essential network services of CPU resources.
5. Transparent Zero-Configuration Acceleration Operation: The Cisco IOS VPN software stack automatically detects the installed AIM-VPN/SSL-2 acceleration module and transparently routes all IPsec and SSL VPN cryptographic tasks to the dedicated hardware co-processors. No manual traffic classification, policy modification or complex crypto tuning configurations are required to enable acceleration, preserving existing production VPN tunnel and remote access policy configurations without administrative rework.
6. Full Native Compatibility with Complete IOS VPN Feature Suite: The AIM acceleration hardware integrates seamlessly with all standard Cisco IOS VPN functionality, including static/dynamic IKEv1/IKEv2 IPsec tunnels, dead peer detection, PKI certificate authentication, AnyConnect SSL VPN group policies, split tunneling, full-tunnel remote access and VPN traffic QoS marking. All existing VPN feature licensing and policy management workflows remain fully unchanged after AIM installation.
7. FIPS 140-2 Validated Cryptographic Module Security Compliance: The dual-engine AIM-VPN/SSL-2 crypto module meets FIPS 140-2 Level 1 cryptographic security validation standards, satisfying strict cryptographic compliance requirements for government, financial services, healthcare and other regulated enterprise network deployments handling sensitive confidential data over encrypted VPN tunnels.
8. Fanless Passive Cooling High-Reliability Low-Maintenance Architecture: The AIM module utilizes a fanless passive heat sink cooling design with zero moving mechanical fan components, eliminating mechanical hardware failure risks and enabling stable 24/7 continuous unattended router operation in remote unmanned branch equipment closets with minimal long-term on-site maintenance requirements. Low idle and full-load power consumption reduces overall router chassis energy draw and enterprise branch site cooling operational energy costs.

Supplementary Product Specification Notes

UNSPSC Classification Code

K9 Security Compliance Note

Factory Hardware Warranty Terms