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Cisco Nexus 3048 Switch

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1GE Top-of-Rack Integrated Layer 2/3 Switch

The Cisco Nexus 3048 Switch, part of the Unified Fabric family, is a 1 Gigabit Ethernet, top-of-rack (ToR) switch in a compact 1-rack-unit (1RU) form factor. It delivers wire-rate Layer 2 and Layer 3 switching on a data center-class Cisco NX-OS operating system. It is ideal for Big Data environments.

This switch provides local switching that connects transparently to upstream Cisco Nexus switches, creating an end-to-end Cisco Nexus fabric in data centers.

Feature and Capabilities

Wire-rate Layer 2 and Layer 3 switching
- Up to 176 Gbps
- Over 132 million packets per second (mpps)
Comprehensive feature set and innovations for next-generation data centers
- Virtual PortChannel (vPC)
  - Provides Layer 2 multipathing, by eliminating Spanning Tree Protocol
  - Enables fully utilized bisectional bandwidth
  - Supports simplified Layer 2 logical topologies
  - No need to change existing management and deployment models
- 32-way equal-cost multipath (ECMP) routing
  - Enables Layer 3 fat tree designs
  - Helps prevent network bottlenecks and increase resiliency
  - Helps increase capacity and minimize network disruptions
- EtherAnalyzer
  - Built-in packet analyzer to monitor and troubleshoot control-plane traffic
  - Based on Wireshark open source network protocol analyzer
- Precision Time Protocol (IEEE 1588)
  - Provides accurate clock synchronization
  - Improves data correlation with network captures and system events
- Precision Time Protocol (IEEE 1588)
  - Border Gateway Protocol (BGP)
  - Open Shortest Path First (OSPF)
  - Enhanced Interior Gateway Routing Protocol (EIGRP)
  - Routing Information Protocol Version 2 (RIPv2)
  - Protocol Independent Multicast sparse mode (PIM-SM) and more

Specifications at a Glance

Description	Specification
Physical	1 RU fixed-form-factor switch 48 100/1000 Mbps RJ-45 ports Four 1/10 Gbps SFP+ uplink ports Two redundant power supplies One fan tray with redundant fans 1 I/O module with management, console, and USB flash memory ports
Performance	176 Gbps switching capacity 132 mpps forwarding rate Line-rate traffic throughput (both Layer 2 and 3) on all ports Configurable MTUs of up to 9216 bytes (jumbo frames)
Hardware Tables and Scalability	MAC addresses	128,000
	Number of VLANS	4096
	Spanning-tree instances	Rapid Spanning Tree Protocol (RSTP): 512 Multiple Spanning Tree (MST) Protocol: 64
	Access control list (ACL) entries	2000 ingress 1000 egress
	Routing table	16,000 prefixes and 16,000 host entries* 8000 multicast routes*
	Number of EtherChannels	64 (with vPC)
	Number of ports per EtherChannel	16
	Buffers	9 MB shared
	Boot flash memory	2 GB

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