Cisco Catalyst 4900 Series Switches deliver high-performance, low-latency wire-speed Layer 2 and 3 services in a small form factor (1 or 2 rack units). The 4900 Series is ideal for space-constrained deployments.
The Cisco Catalyst4948E offers forty-eight 10/100/1000-Gbps RJ45 downlink ports and four 1/10 Gigabit Ethernet uplink ports and is designed to simplify data center architecture and operations by offering enterprise-class hardware and software in a one-rack-unit (1RU) form factor optimized for smart top-of-rack (ToR) data center deployments.
The Cisco Catalyst 4948E offers: • Twice the uplink capacity of the previous switch generation • 1+1 power supply and fan redundancy for hardware replacement with no downtime • Strict front-to-back cooling with no side or top venting • Large shared packet buffers for microburst protection • Nonblocking internal packet switching for east-to-west traffic patterns • Full set of Layer 2 and 3 forwarding features • Outstanding multicast performance • Zero-touch provisioning with Cisco IOS Embedded Event Manager (EEM) • Advanced quality of service (QoS) • IP Version 6 (IPv6) switching and routing in hardware • Extended MAC address tables to enable server virtualization
Table 1 summarizes the main features of the Cisco Catalyst 4900 Series Switches.
Table1. Cisco Catalyst 4900 Series Features | Cisco Catalyst 4948 Switch | Cisco Catalyst 4948 10 Gigabit Ethernet Switch | Cisco Catalyst 4948E Switch |
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| 72 million packets per second (mpps) | | |
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Synchronous Dynamic RAM (SDRAM) | | | |
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Spanning Tree Protocol instances | | | |
Switched virtual interfaces (SVIs) | | | |
Security and QoS hardware entries | | | |
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Switched Port Analyzer (SPAN) | | | |
Minimum software requirement | Cisco IOS Software Release 12.2(20) EWA or later | Cisco IOS Software Release 12.2(25) EWA or later | Cisco IOS Software Release 12.2(54) XO or later |
Cisco IOS Software
The Cisco Catalyst 4948E supports three levels of Cisco IOS Software, summarized in Table 2. The basic level is LAN Base, developed for deployments that require data center - class hardware along with Layer 2 switching. The next level of software is IP Base; most customers will deploy this level of software because it offers many of the value-added Cisco features that provide operational consistency and an easy-to-manage environment. The top level of software is Enterprise Services. Enterprise Services adds support for advanced routing protocols such as Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), Intermediate System to Intermediate System (IS-IS), and Enhanced Interior Gateway Routing Protocol (EIGRP).
Software Configuration Options
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| • Nonstop Forwarding (NSF) • Policy-Based Routing (PBR) • Virtual Route Forwarding Lite (VRF-Lite) |
| • Multicast Listener Discovery (MLD) snooping • Rapid Per VLAN Spanning Tree Plus (RPVST+) • Routing Information Protocol (RIP) • VLAN access control list (VACL) and port ACL (PACL) | • IEEE 802.1Q-in-IEEE 802.1Q (QinQ) • IP service-level agreement (IP-SLA) responder • Network Mobility Service Protocol (NMSP) • Layer 2 Protocol Tunneling (L2PT) • Gateway Load Balancing
Protocol (GLBP) |
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More Cisco 4900 Info:
