Cisco 4948 - Manual (Page 3)

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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
or later
Cisco IOS Software Release 12.2(25)EWA
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)
• 16,000 (Layer 2)
• 28,000 (Layer 3)
• 16,000 (Layer 2)
Per VLAN Spanning Tree (PVST) and
VLAN IDs 4096 4096
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.