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High-Performance Space-Constrained Branch-Office Switching with Enterprise-Grade Features
Product Overview
The Cisco® Catalyst® 4928 10 Gigabit Ethernet Switch (4928-10GE) is a wire-speed, Layer 2 to 4, 1-rack-unit (1RU) switch designed for space-constrained LAN distribution and core applications. Based on the proven Cisco Catalyst 4500 Series hardware and software architecture, this switch offers exceptional performance, bandwidth, and reliability for medium-density, multilayer aggregation of high-performance LAN access switches. High performance and scalability of intelligent network services are made possible with dedicated specialized resources known as ternary content addressable memory (TCAM). Ample TCAM resources (64,000 entries) enable high feature capacity, providing wire-speed routing and switching performance with concurrent provisioning of services such as quality of service (QoS) and security, helping ensure scalability for today’s network requirements with ample room for future growth.
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch offers 28 wire-speed 1000BASE-X Small Form-Factor pluggable (SFP) ports and 2 wire-speed 10 Gigabit Ethernet (X2 optics) ports. Exceptional reliability and serviceability are delivered with optional internal AC or DC 1 + 1 hot-swappable power supplies and a hot-swappable fan tray with redundant fans.
Applications
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch offers flexible and highly available aggregation solutions for nonstop unified network services. Enterprise-grade features such as dynamic routing, dual hot-swappable power supplies, and redundant field-replaceable fans enhance switch availability.
The switch is well-suited for space- and power-constrained deployments because of its compact 1RU form factor, economical power needs, and efficient cooling. Ideally suited to support secure converged applications such as Cisco TelePresence and Cisco Unified Communications, the switch delivers high-performance intelligent switching with its robust feature set.
The 28-port downlink density is ideally suited for branch-office locations where a collapsed distribution core is the most common network architecture (Figure 2). The downlink ports provide both an aggregation point for all access switches and connectivity and policy services for traffic flows. The uplink ports connect the LAN to the external networks, including remote data centers and branch offices. The SFP downlink ports are compatible with many different optics types, allowing network architects to mix and match to meet specific network requirements.
Key Features and Benefits
Wire-Speed Performance in All Directions
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch delivers wire-speed throughput with low latency for data-intensive applications using a 96-Gbps switching fabric with a forwarding rate of 72 million packets per second (mpps) in hardware for Layer 2 to 4 traffic. High-performance switching is maintained regardless of the number of route entries or Layer 3 and 4 services enabled. Hardware-based Cisco Express Forwarding routing architecture enables increased scalability and performance. X2 10 Gigabit Ethernet optics provide 20 Gigabit Ethernet wire-speed uplinks for maximum traffic throughput.
Power-Supply Redundancy for Nonstop Operations
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch provides reliability for critical applications with 1 + 1 redundant, hot-swappable internal AC or DC power supplies. The 1 + 1 power supply design provides A-to-B failover when power supplies are connected to different circuits. You can mix AC and DC power supplies in the same unit for maximum deployment flexibility. The switch also has a hot-swappable fan tray with four redundant fans for additional serviceability and availability.
Comprehensive Management
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch includes a single, dedicated 10/100 console port and a single, dedicated 10/100 management port for offline disaster recovery and remote out-of-band management. Remote in-band management is available with the Simple Network Management Protocol (SNMP), Telnet Client, Bootstrap Protocol (BOOTP), and Trivial File Transfer Protocol (TFTP).
The management port has two operating modes designed to increase operational efficiency and availability. When the system is in Remote Monitoring (RMON) mode, the management port operates in a disaster-recovery mode. In this state the operator can reload new Cisco IOS® Software images from a TFTP server. During normal system operation the management port operates as a standard out-of-band management port. Network administrators can use standard command-line interface (CLI) commands to monitor and configure the switch without interrupting the data flow.
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch delivers a comprehensive set of management tools to provide the visibility and control required for LAN switching. With CiscoWorks solutions and embedded CiscoWorks CiscoView, you can configure the switch to manage devices, VLANs, traffic, and policies. These web-based management tools offer numerous services, including software deployment and quick isolation of error conditions.
Feature Availability
Table 1 lists software configuration options, Table 2 compares models for fiber aggregation, and Table 3 lists the features and benefits of the Cisco Catalyst 4929 10 Gigabit Ethernet Switch.
Table 1. Software Configuration Options for the Cisco Catalyst 4928 10 Gigabit Ethernet Switch
Software Image
Description
IP Base Image
Standard Layer 3 image, including Routing Information Protocol Version 1 (RIPv1), RIPv2, static routes, and Enhanced IGRP (EIGRP) stub
Enterprise Services Image
Enhanced Layer 3 image, including Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System (IS-IS), EIGRP, Border Gateway Protocol (BGP), and all IP Base image features
Table 2. Cisco Catalyst 4900 Series Switch Model Comparison for Fiber Aggregation
Feature and Description
Cisco Catalyst 4928 10 Gigabit Ethernet Switch
Cisco Catalyst 4900M Switch
Switch Capacity
96 Gbps
320 Gbps
Throughput
71 mpps
250 mpps for IPv4
125 mpps for IPv6
IPv6 Support
In software
In hardware
Height
1RU
2RU
Modular Half-Card Slots
0
2
Maximum Number of 10 Gigabit Ethernet Ports
2
24
Maximum Number of Gigabit Ethernet (Fiber) Ports
28
32 (Cisco TwinGig Converter Module)
Uplink Optics Type
4 SFP
2 X2 (10 Gigabit Ethernet) optics
8 X2 (10 Gigabit Ethernet) optics
Multilayer switching
IP Base and Enterprise Service options
IP Base and Enterprise Service options
Shared Buffer
16 MB
16 MB
CPU
666 MHz
1.3 GHz
Synchronous Dynamic RAM (SDRAM)
256 MB
512 MB
Active VLANs
2,048
4,096
Multicast Entries
28,000 (Layer 3)
16,000 (Layer 2)
56,000 for IPv4
28,000 for IPv6
Per-VLAN Spanning Tree (PVST) and VLAN IDs
4,096
4,096
Spanning Tree Protocol
10000
10000
Switched Virtual Interfaces (SVIs)
2,000
4,000
Security and QoS Hardware Entries
32,000
128,000
MAC Addresses
55,000
55,000
Switched Port Analyzer (SPAN)
2 ingress and 4 egress
8 ingress and 8 egress
USB Port
No
Yes
Compact Flash Memory Support
No
Yes
System Reset Button
No
Yes
Minimum Software Requirement
Cisco IOS Software Release 12.2(46)SG or later
Cisco IOS Software Release 12.2(40)XO or later
Table 3. Features and Benefits
Feature
Benefit
Outstanding Scalability
16-MB shared buffer
Large buffers for high-bandwidth video distribution and large file transfers
96-Gbps and 71-mpps wire-speed performance with low latency
Delay-sensitive traffic forwarding without interruption
Wire-speed uplinks
Elimination of oversubscription bottlenecks between downlinks and uplinks across the switch
Configuration Flexibility
SFP optics support
Wide range of cost-effective optics types for diverse deployment options
Table 4. X2 Optics Support of Cisco Catalyst 4928 10 Gigabit Ethernet Switch
Type
Maximum Distance over Specified Medium
Long reach (LR)
10 km on sigle-mode fiber (SMF) (G.652)
CX4
Up to 15m on IBX4 cable
LX4
300m on multimode fiber (MMF)
Short reach (SR)
26 to 300m on MMF (depends on MMF type)
Extended reach (ER)
40 km on SMF
Long reach LRM
220m on MMF
Power Supply
The Cisco Catalyst 4928 10 Gigabit Ethernet Switch offers a choice of 300-watt (W) AC or DC power supplies. The switch can operate with one power supply present. When two power supplies are installed, the switch shares the power load between the two supplies. Table 5 lists the specifications of the power supplies.
●No performance penalty for granular QoS functions
●Per-port, per-VLAN QoS
●Match CoS for non-IPv4 traffic
Predictable Performance
●96-Gbps switching fabric
●Layer 2 hardware forwarding at 72 mpps
●Layer 3 hardware-based IP Cisco Express Forwarding routing at 72 mpps
●Layer 4 TCP and User Datagram Protocol (UDP) hardware-based filtering at 72 mpps
●No performance penalty with advanced Layer 3 and 4 services enabled
●Software-based learning at a sustained rate of 3000 hosts per second
●Support for 55,000 unicast and 16,000 multicast MAC addresses
●Support for 32,000 entries in routing table (shared between unicast and multicast)
●Scalability to 2000 virtual ports (VLAN port instances)
●Bandwidth aggregation up to 40 Gbps using Cisco Gigabit Ethernet EtherChannel technology
Technology
●Hardware-based multicast management
●Hardware-based access control lists (ACLs), router ACLs (RACLs), and VLAN ACLs (VACLs)
●Comprehensive management
●Manageable through Cisco Network Assistant
●Single console port and single IP address to manage all system features
●Software configuration management, including local and remote storage
●Manageable through CiscoWorks Windows network-management software on a per-port and per-switch basis, providing a common management interface for Cisco routers, switches, and hubs
●SNMPv1, v2, and v3 instrumentation, delivering comprehensive in-band management
●CLI-based management console to provide detailed out-of-band management
●RMON software agent to support four RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis
●Support for all nine RMON groups through the use of a Cisco SwitchProbe analyzer (SPAN) port, which permits traffic monitoring of a single port, a group of ports, or the entire switch from a single network analyzer or RMON probe
●Analysis support, including ingress port, egress port, and VLAN SPAN
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Delivered By
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