Cisco is announcing the new Cisco Catalyst® 4948E Ethernet Switch optimized for full-featured server-access switching. The Cisco Catalyst 4948E 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 (Figure 1).
Figure 1. Cisco Catalyst 4948E
New Features
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.
Table 1. Cisco Catalyst 4900 Series Features
Feature
Cisco Catalyst 4948 Switch
Cisco Catalyst 4948 10 Gigabit Ethernet Switch
Cisco Catalyst 4948E Switch
Performance
Switching capacity
96 Gbps
136 Gbps
176 Gbps
Throughput
72 million packets per second (mpps)
102 mpps
131-mpps IPv4 switching
110-mpps IPv6 switching
CPU
266 MHz
666 MHz
1.0 GHz
Synchronous Dynamic RAM (SDRAM)
256 MB
256 MB
1024 MB
Active VLANs
4096
4096
4096
Multicast entries
• 28,000 (Layer 3)
• 16,000 (Layer 2)
• 28,000 (Layer 3)
• 16,000 (Layer 2)
• 32,000 (IPv4 Layer 3)
• 16,000 (IPv6 Layer 3)
• 32,000 (Layer 2)
Spanning Tree Protocol instances
1500
1500
3000
Switched virtual interfaces (SVIs)
2000
2000
4000
Security and QoS hardware entries
16,000
16,000
32,000
MAC addresses
32,000
55,000
55,000
Switched Port Analyzer (SPAN)
2 ingress and 4 egress
2 ingress and 4 egress
8 ingress and 8 egress
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).
Table 2. Software Configuration Options
Enterprise Services
IP Base
• BGPv4
• EIGRP
• OSPFv2 and v3
• IS-IS
• IP-SLA
• Nonstop Forwarding (NSF)
• Policy-Based Routing (PBR)
• Virtual Route Forwarding Lite (VRF-Lite)
• Multicast VRF-Lite
LAN Base
• AutoQoS
• Cisco EnergyWise
• Flexlink+
• Layer 2 traceroute
• Multicast Listener Discovery (MLD) snooping
• Rapid Per VLAN Spanning Tree Plus (RPVST+)
• Static routing
• Routing Information Protocol (RIP)
• Cisco SmartPort macros
• VLAN access control list (VACL) and port ACL (PACL)
• EIGRP-stub
• OSPF for routed access
• 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)
• Stub IP multicast
• Cisco IOS EEM
• Gateway Load Balancing
Protocol (GLBP)
Ordering Information
Table 3 provides ordering information for the Cisco Catalyst 4948E.
Table 3. Ordering Information
Description
Part Number
Hardware
Catalyst 4948E 48x 10/100/1000(RJ45)+4*10GbE(SFP+), opt sw, no p/s
WS-C4948E
Catalyst 4948E 48x 10/100/1000(RJ45)+4*10GbE(SFP+), IP Base IOS, AC p/s
WS-C4948E-S
Catalyst 4948E 48x 10/100/1000(RJ45)+4*10GbE(SFP+), Ent Ser IOS, AC p/s
WS-C4948E-E
Green Bundle 10x WS-C4948E
WS-C4948E-BDL
Catalyst 4948E 300WAC power supply rear exhaust (spare)
PWR-C49E-300AC-R(=)
Catalyst 4948E 300WAC redundant power supply rear exhaust
PWR-C49E-300AC-R/2
Catalyst 4948E 300WDC power supply (spare)
PWR-C49-300DC(=)
Catalyst 4948E 300WDC redundant power supply (spare)
PWR-C49-300DC/2
Software
Cisco IOS Software for Cisco Catalyst 4948E Series Switches (LAN Base image)
S49LB-12254XO(=)
Cisco IOS Software for Cisco Catalyst 4948E Series Switches (LAN Base image with Triple Data Encryption)
S49LBK9-12254XO(=)
Cisco IOS Software for Cisco Catalyst 4948E Series Switches (IP Base image)
S49IPB-12254XO(=)
Cisco IOS Software for Cisco Catalyst 4948E Series Switches (IP Base image with Triple Data Encryption)
S49IPBK9-12254XO(=)
Cisco IOS Software for Cisco Catalyst 4948E Series Switches (Enterprise Services image with BGP support)
S49ES-12254XO(=)
Cisco IOS Software for Cisco Catalyst 4948E Series Switches (Enterprise Services image with 3DES and BGP support)
S49ESK9-12254XO(=)
Catalyst 4948 IP Base Upgrade License for LAN Base IOS
WS-C4900-SW-LIC
Power Cables
AC Power cord, 110V North America, Japan
CAB-US515-C15-US(=)
AC Power cord, 220V North America
CAB-N5K6A-NA(=)
AC Power cord (Australia, New Zealand)
CAB-AS3112-C15-AU(=)
AC Power cord (Europe)
CAB-CEE77-C15-EU(=)
AC Power cord CD12 (Italy)
CAB-C2316-C15-IT(=)
AC Power cord (Argentina)
CAB-IR2073-C15-AR(=)
AC Power cord (South Africa, India)
CAB-SABS-C15-IND(=)
AC Power cord (United Kingdom)
CAB-BS1363-C15-UK(=)
AC Power cord (Switzerland)
CAB-9K10A-SW(=)
Accessories
Cisco Catalyst 4948E spare fan tray rear exhaust
WS-X4993(=)
Cisco Services
Cisco Services makes networks, applications, and the people who use them work better together.
Today, the network is a strategic platform in a world that demands better integration of people, information, and ideas. The network works better when services, together with products, create solutions aligned with business needs and opportunities.
The unique Cisco Lifecycle approach to services defines the requisite activities at each phase of the network lifecycle to help ensure service excellence. With a collaborative delivery methodology that joins the forces of Cisco, our skilled network of partners, and our customers, we achieve the best results.
