Arista 7048-A Series 48P 1GbE RJ45 + 4x 10GBE SFP+ Gigabit Switch DCS-7048T-A-R
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Local Pickup in Dallas, TX Available
- Specifications
- Description
| Manufacturer Part Number | DCS-7048T-A-R |
| Manufacturer | Arista |
| Condition | Seller Refurbished |
| Standard Warranty | 90 Day Replacement Warranty |
| Item Category | Network Switch |
| Model | 7048-A |
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Arista DCS-7048T-A-R
Series: Arista 7048-A Series
Model Format (no spaces): DCS-7048T-A-R
The Arista DCS-7048T-A-R is a high-performance 1U managed data center switch designed for high-density rack deployments. It delivers non-blocking Layer 2/3 performance with ultra-low latency and rear-to-front airflow (“-R” variant) to match hot aisle/cold aisle cooling designs.
Physical Specifications
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Rack Height: 1U (1.75 in / 4.4 cm)
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Width: 19 in (standard rack mount)
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Depth: 16 in (40.6 cm)
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Weight: ~17–18 lbs (7.7–8.2 kg)
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Airflow: Rear-to-Front (Back-to-Front)
Interface & Port Configuration
Data Ports
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48 × 10/100/1000Base-T (RJ-45) Gigabit Ethernet
Uplink Ports
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4 × 1/10GbE SFP+
Management Interfaces
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1 × 10/100/1000 RJ-45 management port
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1 × RS-232 serial console port
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1 × USB port
This high port density makes it ideal for top-of-rack (ToR) data center deployments.
Performance Specifications
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Switching Throughput: 176 Gbps (non-blocking)
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Forwarding Rate: 132 Mpps
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Latency: As low as 3 microseconds (64-byte frames)
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Packet Buffer: 768 MB deep buffer
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Allows simultaneous buffering across all ports (up to ~50ms traffic burst handling)
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Hardware & Power
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CPU: Dual-core x86
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Memory: 4 GB DRAM / 2 GB Flash
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Power Supplies: Dual hot-swappable 460W AC (1+1 redundancy)
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Typical Power Draw: ~174W
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Maximum Power Draw: ~212W
Designed for continuous data center operation with redundant components.
Software & Advanced Features
Runs Arista Extensible Operating System (EOS), delivering enterprise-grade automation and routing capabilities.
Automation & Provisioning
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Zero Touch Provisioning (ZTP)
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Ansible, Puppet, Chef integration
Layer 2 / Layer 3 Features
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OSPF
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BGP
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ECMP (up to 16-way)
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VRRP
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MLAG
Virtualization Support
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VMTracer integration with VMware vSphere
VLAN Support
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Up to 4,094 VLAN IDs
What is ZTP on This Switch?
ZTP (Zero Touch Provisioning) allows the switch to automatically configure itself when first powered on.
How It Works
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On first boot (no startup-config present), the switch enters ZTP mode.
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It sends DHCP requests on all interfaces.
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If DHCP Option 67 is provided, it downloads a config file or script via HTTP, HTTPS, FTP, or TFTP.
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It applies the configuration and reloads automatically.
Why It’s Useful
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Rapid deployment of large switch batches
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Eliminates manual console configuration
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Reduces human configuration errors
Summary
The Arista DCS-7048T-A-R is a 1U, 48-port Gigabit Ethernet data center switch with 4×10GbE SFP+ uplinks, deep buffering, ultra-low latency, redundant power supplies, and enterprise automation via EOS. It is optimized for top-of-rack deployments requiring reliability, high throughput, and scalable Layer 3 functionality.