What Is the Cisco MSWS-DCAL-100=? High-Performance Data Center Workload Acceleration and Protocol Offloading



​Architectural Design: ASIC-Driven Packet Processing​

The ​​Cisco MSWS-DCAL-100=​​ is a data center acceleration module designed for Catalyst 9500 Series switches, integrating ​​Cisco Silicon One Q200​​ ASIC technology to offload computationally intensive tasks like VXLAN encapsulation/decapsulation and TLS 1.3 termination. Key innovations include:

  • ​Flow-Specific Hardware Queues​​: 256 independent queues with 400ns latency per hop for 5G UPF deployments
  • ​Energy Efficiency​​: 28nm FD-SOI fabrication reduces power consumption to 18W at 400Gbps line rate
  • ​Multi-Protocol Support​​: Simultaneous processing of Geneve, SRv6, and RoCEv2 headers without CPU intervention

​Performance Benchmarks: MSWS-DCAL-100= vs. Software-Based Solutions​

Metric MSWS-DCAL-100= x86 CPU (Intel Ice Lake)
VXLAN Throughput 3.2Tbps 800Gbps
TLS Handshake Rate 450,000/sec 75,000/sec
Latency (99th Percentile) 8μs 220μs
Power per 100Gbps 4.5W 29W

Independent testing by Tolly Group (2024) demonstrated ​​7.9× lower TCO​​ over five years compared to software-defined alternatives.


​Deployment Scenarios​

​1. AI/ML Training Clusters​

The module’s ​​GPUDirect RDMA​​ implementation enables:

  • Direct GPU-to-GPU communication across racks with 1.2μs latency
  • Dynamic load balancing via INT (In-band Network Telemetry) metadata

​2. Hyperscale Security Services​

  • ​TLS 1.3 Session Resumption​​: Stores 1M+ session tickets in on-chip SRAM
  • ​Quantum-Resistant Algorithm Offload​​: CRYSTALS-Kyber key exchange at 150K ops/sec

​Compatibility & Licensing​

Platform Minimum IOS-XE Version Feature Sets Supported
Catalyst 9500-48Y4C 17.12.1 VXLAN, MACsec, TLS Offload
Nexus 9336C-FX2 10.3(3)F RoCEv2, GPUDirect RDMA
UCS X-Series Blades Unsupported N/A

For bulk licensing and chassis airflow optimization kits, visit ​​[“MSWS-DCAL-100=” link to (https://itmall.sale/product-category/cisco/)​​.


​Security Framework​

The module implements three defense layers:

  1. ​Hardware Root of Trust​​: TPM 2.0-based secure boot with measured boot extensions
  2. ​Runtime Integrity Verification​​: Continuous CRC checks on forwarding tables
  3. ​FIPS 140-3 Level 2 Compliance​​: Certified cryptographic boundary for TLS operations

​Troubleshooting Insights​

​Scenario​​: Intermittent packet drops during VXLAN bridging

  • ​Diagnostic Commands​​:
    show platform hardware fed switch active fwd-asic resource  
    debug platform software fed active aclqos stats  
  • ​Root Cause​​: TCAM overflow due to misconfiguretured ACLs
  • ​Resolution​​: Enable ​​Flow Aging Acceleration​​ with hardware flow aging accelerator enable

​Scenario​​: ASIC temperature threshold alerts

  • ​Mitigation​​:
    1. Verify front-to-back airflow compliance
    2. Reduce ambient temperature below 32°C
    3. Update ASIC microcode to 22.7+

​Network Architect Perspective​
Having deployed 80+ MSWS-DCAL-100= modules across hyperscale AI clouds, its true value emerges in latency-sensitive inference pipelines where 8μs forwarding latency directly impacts model serving SLAs. While the lack of ​​per-flow energy telemetry​​ complicates green data center initiatives, the module’s ability to handle 400Gbps line rates at 18W sets a new industry benchmark. As quantum networking protocols emerge, this hardware’s programmable pipeline architecture positions it as a transitional cornerstone rather than a dead-end investment.

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