Datasheet

Data Sheet
© 2011 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 2 of 9
The Cisco Catalyst 4948E and 4948E-F switches offer:
Scalability and Performance
●
Nonblocking server-to-server traffic with 176-Gbps aggregate throughput
●
Ease of migration from Gigabit Ethernet to 10 Gigabit Ethernet upstream with support for SFP and SFP+
optics
●
Large buffers optimized to handle microbursts with 17.5 MB of centralized buffering, helping ensure that
business-critical packets are not lost due to insufficient buffering
●
Active queue management through dynamic buffer limiting for TCP throughput optimizations
●
Investment protection through data center design with dual-stack IP Versions 4 and 6 (IPv4 and v6) support
●
Advanced quality of service (QoS) with eight configurable queues for each port
●
Data center server virtualization support for larger Layer 2 domains with scalable MAC addresses
●
Support for a wide variety of optics connecting to the aggregation layer
●
Front-to-back and back-to-front airflow options
Enhanced Manageability
●
Pay as you grow with software feature packages, from Layer 2 only (LAN Base) to full Layer 3 capability
(Enterprise Services)
●
Reduced operating expenses (OpEx) with tools such as AutoInstall and Cisco IOS
®
Embedded Event
Manager (EEM) that enable immediate availability
●
Data center automation with IP service-level agreement (SLA) and Smart Call Home
●
Data center optimization with true front-to-back and back-to-front airflow, including power supply cooling
●
Enhanced application visibility with smart flow logging
●
Enhanced manageability through eight bidirectional Switched Port Analyzer (SPAN) and Remote SPAN
(RSPAN) sessions
●
Network visibility through Cisco
®
NetFlow-Lite (future support)
Resiliency
●
1+1 AC or DC power supplies and hot-swappable fan tray with redundant fans for high availability for mission-
critical applications
●
Optimized forwarding across all four uplinks with equal-cost multipath (ECMP) load sharing
●
Improved resiliency with protection from attacks with access control lists (ACLs), Control Plane Policing
(CoPP), Address Resolution Protocol (ARP) inspection, and Dynamic Host Configuration Protocol (DHCP)
snooping
●
Active queue management using dynamic buffer limiting (DBL) for increased security and network control
Cisco IOS Software
Cisco IOS Software is a proven network OS that offers best-in-class availability, manageability, and scalability.
The Cisco Catalyst 4948E and 4948E-F support three levels of Cisco IOS Software. The basic level is LAN Base,
developed for deployments that require data center-class hardware along with Layer 2 switching but not advanced
features such as routing and Cisco IOS EEM. The next level of software is IP Base; this level supports static routes,
Routing Information Protocol (RIP) Versions and 2, and Enhanced Interior Gateway Routing Protocol Stub (EIGRP-
Stub) for limited routing. The top level of software is Enterprise Services; this level adds support for advanced routing
protocols such as Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), Intermediate System-to-