Cisco Systems 4948 Software Configuration Options, Predictable Performance and Scalability, Cpu

SOFTWARE CONFIGURATION OPTIONS

Table 1 describes the software configuration options for the Cisco Catalyst 4948-10GE.

Table 1. Software Configuration Options for the Cisco Catalyst 4948-10GE

Software Image	Description
IP Base Image	Standard Layer 3 image, including Routing Information Protocol Version 1 (RIPv1), RIPv2, static routes
Enterprise Services Image	Enhanced Layer 3 image, including Open Shortest Path First (OSPF), Intermediate System-to-Intermediate
	System (IS-IS), Enhanced Interior Gateway Routing Protocol (EIGRP), and Border Gateway Protocol (BGP)
	AppleTalk, and Internetwork Packet Exchange (IPX) software routing. Also includes all SMI features.

Table 2 compares the Cisco Catalyst 4948 Switch to the Catalyst 4948-10GE Switch.

Table 2. Comparison Between Cisco Catalyst 4948 and Catalyst 4948-10GE

Feature and Description	Cisco Catalyst 4948		Cisco Catalyst 4948-10GE
Layer 2–4 Performance	72 mpps and 96 Gbps		102 mpps and 136 Gbps
Uplink Optic Types	4 SFP optics		Two X2 (10 GE) optics
Switching Capacity	96 Gbps		136 Gbps
Throughput	72 mpps		102 mpps
Multilayer Switching	Full Layer 2–4 services and routing		Full Layer 2–4 services and routing
Minimum Software Requirement	Cisco IOS® Software Release 12.2(20)EWA		Cisco IOS Software Release 12.2(25)EWA
	or later		or later
CPU	266 MHz		666 MHz
Synchronous Dynamic RAM (SDRAM)	256 MB		256 MB
Active VLANs	2048		2048
Multicast Entries	•	28,000 (Layer 3)	•	28,000 (Layer 3)
	•	16,000 (Layer 2)	•	16,000 (Layer 2)
Per VLAN Spanning Tree (PVST) and	4096		4096
VLAN IDs
Spanning Tree Protocol Instances	1500		1500
Switched Virtual Interfaces (SVIs)	2k		2k

PREDICTABLE PERFORMANCE AND SCALABILITY

The Cisco Catalyst 4948-10GE is optimized for multimedia applications with its advanced multicast support. It supports Protocol Independent Multicast (PIM), Source Specific Multicast (SSM), and Pragmatic General Multicast (PGM), providing end users with additional scalability to support multimedia applications. Also supported is Internet Engineering Task Force (IGMP) snooping in hardware, enhancing performance and reducing network traffic by allowing a switch to dynamically add and remove hosts from a multicast group.

INTELLIGENT NETWORK SERVICES WITH QOS AND SOPHISTICATED TRAFFIC MANAGEMENT

The Cisco Catalyst 4948-10GE offers superior per-port quality of service (QoS) features to help ensure that network traffic is classified, prioritized, and scheduled optimally to efficiently manage bandwidth-hungry multimedia, and time-sensitive and mission-critical applications. The Catalyst 4948-10GE can classify, police, and mark incoming packets, allowing the administrator to differentiate between traffic flows and enforce policies.

© 2005 Cisco Systems, Inc. All rights reserved.

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