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Cisco Catalyst 4948 User Manual

Cisco Catalyst 4948
359 pages
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Table of Contents

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Cisco Catalyst 4948 Specifications

General IconGeneral
Switching Capacity136 Gbps
Forwarding Rate102 Mpps
Rack Units1U
MAC Address Table Size32, 000 entries
Authentication MethodRADIUS, TACACS+
RAM256 MB
Flash Memory64 MB
Power DeviceInternal power supply
Voltage Required100-240 VAC
Weight16.5 lbs
Operating Humidity10% to 85% non-condensing
Ports48 x 10/100/1000
Power SupplyInternal
Layer SupportLayer 3
Jumbo Frame SupportYes (up to 9216 bytes)
Routing ProtocolRIP, OSPF, EIGRP, BGP
Remote Management ProtocolSNMP, Telnet, SSH
FeaturesVLAN support, QoS
Compliant StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.1Q, IEEE 802.1p
Operating Temperature32 °F to 104 °F (0 °C to 40 °C)

Summary

CLI Usage

Cisco Internetwork Operating System (IOS) Software

Describes the use of Cisco IOS Software for switching configuration, including user interface modes, commands, and help.

Supervisor Engine Configuration

Passwords and Password Recovery

Covers setting passwords and recovering lost or unknown passwords for switches.

Layer 2 Interface Configuration

EtherChannel

Covers configuration steps to bundle several switch ports into a single logical link.

Layer 3 Interface Configuration

Layer 3 Switching

Describes the process of Layer 3 switching and the elements needed for Layer 3 processing.

Layer 3 EtherChannels

Covers configuring multiple interfaces into a single logical channel for Layer 3 processing.

VLANs and Trunking

VLAN Configuration

Describes configuring, creating, and configuring VLANs on a switch.

Trunking

Covers extending VLANs beyond switch boundaries using tagging mechanisms.

Spanning Tree Protocol (STP)

STP Operation

Explains the spanning-tree algorithm, processes, and decisions made by a switch.

STP Configuration

Presents basic steps for configuring the Spanning Tree Protocol (STP).

Configuring High Availability Features

Route Processor Redundancy (RPR/RPR+): Supervisor Redundancy

Discusses steps for configuring redundancy and failover for Catalyst 6500 with redundant supervisors.

Non-Stop Forwarding/Supervisor Switchover (NSF/SSO) with Supervisor Redundancy

Covers configuring and tuning non-stop forwarding and supervisor switchover.

Router Redundancy with HSRP

Discusses configuration steps for Layer 3 switches to share a common IP address for gateway redundancy.

Multicast

IGMP Snooping

Explains configuring switches to constrain multicast traffic by listening to IGMP messages.

Server Load Balancing (SLB)

SLB

Covers configuration steps for load balancing traffic to one or more server farms.

SLB Firewall Load Balancing

Discusses steps to load balance traffic to one or more firewall farms.

Controlling Traffic and Switch Access

Protocol Filtering

Explains configuring ports to prevent forwarding of flood packets of a particular protocol.

Port Security

Provides information to configure ports for use only by specified clients based on MAC addresses.

VLAN Access Control Lists

Describes controlling traffic through Layer 2 switches using access control lists applied to a VLAN.

Quality of Service

QoS Theory

Discusses various operations and mechanisms that constitute quality of service (QoS).

QoS Configuration

Explains steps to configure and monitor QoS on a Catalyst switch.

Voice

Voice QoS

Presents guidelines and suggestions for end-to-end quality of service (QoS) in a campus network.

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