Overview of the A900-WWA-RJ48-V=

The ​​A900-WWA-RJ48-V=​​ is a ​​48-port RJ45 copper interface module​​ designed for Cisco’s ASR 9000 Series routers. Tailored for environments requiring ​​high-density copper connectivity​​, it supports 10/100/1000BASE-T Ethernet, making it ideal for enterprise edge networks, legacy WAN transitions, or industrial IoT deployments where fiber isn’t feasible.


Core Technical Specifications

  • ​Port Density​​: 48x RJ45 ports with ​​auto-negotiation​​ for 10/100/1000 Mbps speeds.
  • ​MACsec Support​​: ​​Layer 2 encryption​​ for secure data transmission over copper.
  • ​Power Efficiency​​: Consumes 35% less power per port compared to older copper modules.
  • ​Compatibility​​: Works with ASR 9904, 9910, and 9922 chassis running Cisco IOS XR 6.6.3+.

Addressing Key User Concerns

​Q: Does this module support PoE/PoE+ for connected devices?​
No—the A900-WWA-RJ48-V= is ​​non-PoE​​ and designed purely for data transmission.

​Q: Can it coexist with fiber modules like the A900-IMA8Z= in the same chassis?​
Yes, but ensure IOS XR compatibility and sufficient power budget for mixed configurations.

​Q: Is it suitable for long-haul WAN links?​
No. Copper’s distance limitations (100m) make it better suited for ​​short-range intra-campus or data center interconnects​​.


Performance Comparison: A900-WWA-RJ48-V= vs. A900-IMA8Z= (Fiber)

​Feature​ ​A900-WWA-RJ48-V=​ ​A900-IMA8Z=​
Media Type Copper (RJ45) Fiber (SFP+)
Port Speed 1Gbps 10Gbps
Max Distance 100m 10km+ (based on optics)
Use Case Legacy LAN, industrial IoT High-speed WAN/data center
Security MACsec encryption MACsec + Layer 3 IPsec

Ideal Deployment Scenarios

  • ​Legacy Network Upgrades​​: Transitioning from Cat5/Cat6 cabling to modern routing without fiber overhauls.
  • ​Industrial Control Systems​​: Connecting PLCs and sensors in environments sensitive to EMI (fiber alternatives may disrupt existing setups).
  • ​Branch Office Aggregation​​: Consolidating copper-based VoIP or surveillance device traffic.

For verified sourcing, the A900-WWA-RJ48-V= is available via itmall.sale.


Why This Copper Module Still Matters

In an era dominated by fiber evangelism, the ​​A900-WWA-RJ48-V=​​ addresses a pragmatic reality: ​​not all networks can (or should) abandon copper​​. Having deployed ASR 9000 systems in mining and manufacturing sites, I’ve seen fiber’s fragility clash with harsh environments. This module’s MACsec support also bridges the security gap often cited against copper. While it won’t win speed contests, its cost efficiency in retrofitting legacy infrastructure makes it a tactical choice—especially when paired with ASR’s routing muscle for hybrid WAN-LAN roles.

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