Cisco 4948 Series Datasheet - Page 3

Browse online or download pdf Datasheet for Switch Cisco 4948 Series. Cisco 4948 Series 16 pages. 10 gigabit ethernet switch
Also for Cisco 4948 Series: Datasheet (14 pages), Product Bulletin (4 pages), Datasheet (18 pages)

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Table 1.

Descriptions of Software Configuration Options for Cisco Catalyst 4948

Software Image

IP Base Image

Enterprise Services Image

TECHNICAL SPECIFICATIONS

Performance and Switching Specifications

96 Gbps nonblocking switch fabric

72 Mpps Layer 2 Forwarding (hardware)

72 Mpps Layer 3 and 4 forwarding—IP routing, Cisco Express Forwarding-based (hardware)

Layer 2–4 hardware-based switch engine (application-specific integrated circuit [ASIC]-based)

Unicast and multicast routing entries: 32,000

Support for 2048 active VLANs and 4096 VLAN IDs per switch

Layer 2 multicast addresses: 16,384

MAC addresses: 32,768

Policers: 512 ingress and 512 egress

ACL or quality-of-service (QoS) entries: 32,000

Uplinks: 4 alternatively wired SFP ports with (Gigabit EtherChannel) support

Latency: 6 microseconds for 64-byte packets

Switched virtual interfaces (SVIs): 2048

STP instances: 1500

Internet Group Management Protocol (IGMP) snooping entries: 8000

Layer 2 Features

Layer 2 hardware forwarding at 72 Mpps

Layer 2 switch ports and VLAN trunks

IEEE 802. 1Q VLAN encapsulation

Inter-Switch Link (ISL) VLAN encapsulation

Dynamic Trunking Protocol (DTP)

VLAN Trunking Protocol (VTP) and VTP domains

Per-VLAN Spanning Tree Protocol (PVST+) and Per-VLAN Rapid Spanning Tree Protocol (PVRST)

Spanning-tree PortFast and PortFast guard

Spanning-tree UplinkFast and BackboneFast

802.1s

802.1w

Spanning-tree root guard

Cisco Discovery Protocol

IGMP snooping v1, v2, and v3

802.3ad

Cisco EtherChannel

technology, Cisco Fast EtherChannel technology, and Cisco Gigabit EtherChannel technology support

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Description

Standard Layer 3 image, including Routing Information Protocol Version 1 (RIPv1), RIPv2, static routes,

EIGRP stub.

Enhanced Layer 3 image, including Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System

(IS-IS), and Enhanced Interior Gateway Routing Protocol (EIGRP), Border Gateway Protocol (BGP), Appletalk, and

Internetwork Packet Exchange (IPX). Also includes all IP Base Image features.

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