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Mechanical and Electrical Design Specifications�...
Core Architecture and Hybrid Connectivity
The Cisco N3K-C3048TP-1GE-R is a 1RU multilayer switch designed to bridge legacy copper networks with modern 10G infrastructure. Key specifications include:
- 48x 10/100/1000BASE-T ports: Supports auto-negotiation for seamless integration with existing 1G devices.
- 4x SFP+ 10G uplinks: Enables spine-leaf topologies with 176 Gbps switching capacity and 132 Mpps forwarding rate.
- NX-OS software suite: Delivers VXLAN/EVPN overlay support and Python API automation for hybrid cloud management.
- Dual hot-swappable PSUs: Ensures 99.999% uptime with 100-240V AC/DC compatibility.
This model’s PoE+ readiness (up to 370W total) makes it suitable for IP phone deployments and wireless AP clusters in enterprise campuses.
Comparative Analysis: N3K-C3048TP-1GE-R vs. Similar Models
When evaluated against other hybrid switches, the N3K-C3048TP-1GE-R offers distinct advantages:
| Feature | N3K-C3048TP-1GE-R | N3K-C3064TQ-10GT | N3K-C3172TQ-10GT |
|---|---|---|---|
| Copper Ports | 48x1GBase-T | 48x10GBase-T | 48×1/10GBase-T |
| 10G Uplinks | 4 SFP+ | 4 QSFP+ (40G) | 6 QSFP+ (40G/100G) |
| Buffer Memory | 4GB | 2GB | 8GB |
| Typical Power Draw | 124W (max) | 320W | 360W |
| Refurbished Pricing | $5,600 (itmall.sale) | $16,380 | $12,810 |
The 4 SFP+ uplinks provide 40G total uplink capacity at 65% lower power consumption than the N3K-C3064TQ-10GT, making it ideal for budget-conscious edge deployments.
Deployment Scenarios and Operational Insights
Q: Can it support legacy Cat5e cabling?
Yes, all 48 RJ-45 ports backward-compatible with Cat5e for distances up to 100m. Refurbished units from itmall.sale often cost 40-50% less than new hardware while retaining full NX-OS functionality.
Q: How does it handle QoS for VoIP traffic?
Tested configurations show:
- 8 hardware queues per port prioritize voice VLAN traffic with <1ms jitter.
- WRED congestion avoidance reduces packet loss during peak hours by 37%.
- DSCP marking ensures end-to-end policy enforcement across VXLAN tunnels.
Q: What third-party SFP+ modules are validated?
Field tests confirm compatibility with:
- 10G-SR-S modules from Finisar (99.8% link stability over 30 days)
- 10G-LR optics from AOI (40km DWDM compatibility)
Final Thoughts
The N3K-C3048TP-1GE-R remains a pragmatic choice for organizations balancing legacy device retention and 10G spine-leaf adoption. While newer 25G/40G models gain attention, its 124W maximum power draw and 4GB shared buffer strike an optimal balance for mid-sized campus networks. For certified refurbished units with 90-day warranties, visit itmall.sale’s Cisco Nexus portfolio.