Cisco Catalyst 4948 Switch
Specifications Overview
| Series | Cisco Catalyst 4900 Series Switches |
|---|---|
| Product Type | Campus LAN Switches - Core and Distribution |
| Status | Orderable Buy |
| Release Date | 27-SEP-2004 |
| Product ID | |
| Compatibility | |
| Visio Stencil (2 MB .zip file) | |
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Document Categories-
At-a-Glance
- Cisco Network Assistant At-a-Glance (PDF - 371 KB)
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Brochures
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Bulletins
- Cisco Catalyst 4948 Fixed-Config Switch for Rack-Optimized Server Switching
- Cisco Catalyst 4900M Series
- Cisco Catalyst 4900M Switch Receives Metro Ethernet Forum 9 and 14 Certification
- Cisco IOS Software Release 15.0(1)SY
- Cisco IOS Software Release 12.2(54)SG for Cisco Catalyst 4500 Series Supervisor Engines and Cisco Catalyst 4900 Series Fixed-Configuration Switches
- Cisco IOS Software Release 12.2(40)SG for Cisco Catalyst 4900 Series Switches
- Cisco IOS Software Release 12.2(31)SG for Cisco Catalyst 4900 Series Switches
- Cisco IOS Software Release 12.2(31)SGA for Cisco Catalyst 4900 Series Switches.
- Cisco IOS Software Release 12.2(25)SG For Cisco Catalyst 4900 Series Switches
- New 8-Port 10GBASE-T Line Card for Cisco Catalyst 4900M Switch
- New 8-Port 10GBASE-T Line Card for Cisco Catalyst 4900M Switch
- New Cisco Catalyst 4948E-F Ethernet Switch for High-Performance Data Center Access
- New Cisco Catalyst 4900 Series Green Bundle with Volume Service Pricing
- New LAN Base Option for Cisco Catalyst 4948 Switch and 4948 10 Gigabit Ethernet Switch
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Command References
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Configuration Examples and TechNotes
- All Transparent VTP Domain to Server-Client VTP Domain Migration Configuration Example
- Configuration example to migrate Spanning Tree from PVST+ to MST
- Configuration example to migrate Spanning Tree from PVST+ to MST
- Configure IOS Catalyst Switches to Connect Cisco IP Phones Configuration Example
- Configuring EtherChannel Between a Catalyst Switch Running CatOS and a Workstation or Server
- Configuring EtherChannel and 802.1Q Trunking with Catalyst 2948G-L3s and CatOS Based Switches
- Configuring EtherChannel and 802.1Q Trunking with Catalyst 2948G-L3s and CatOS Based Switches
- Configuring VLAN Trunk Protocol (VTP)
- Configuring a Management IP Address on Catalyst 4500/4000, 5500/5000, 6500/6000, and Catalyst Fixed Configuration Switches
- Configuring and Troubleshooting Ethernet 10/100/1000Mb Half/Full Duplex Auto-Negotiation
- Connecting a Modem to the Console Port on Catalyst Switches
- Creating Ethernet VLANs on Catalyst Switches
- EtherChannel Between Catalyst 3550/3560/3750 Series Switches and Catalyst Switches Running Cisco IOS System Software Configuration Example
- Managing Software Images and Working with Configuration Files on Catalyst Switches
- Spanning Tree Protocol Root Guard Enhancement
- Spanning Tree from PVST+ to Rapid-PVST Migration Configuration Example
- Spanning Tree from PVST+ to Rapid-PVST Migration Configuration Example
- Understanding VLAN Trunk Protocol (VTP)
- Understanding and Configuring the Cisco UplinkFast Feature
- Understanding and Configuring the Unidirectional Link Detection Protocol Feature
- Using PortFast and Other Commands to Fix Workstation Startup Connectivity Delays
- VLAN Load Balancing Between Trunks Using the Spanning-Tree Protocol Port Priority
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Configuration Guides
Catalyst 4900 and 4500 switches share configuration information. Refer to the documentation at the locations below:
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Data Sheets
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End-of-Life and End-of-Sale Notices
English
- End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948E Ethernet Switch
- End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4900M Switch
- End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948 Switch Accessories
- End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948 Switch
- End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948-10GE, Cisco Catalyst 4928-10GE, and Cisco ME 4924-10GE Switches
French - Canadian
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Field Notices
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Install and Upgrade Guides
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Password Recovery
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Release Notes
15.x(x)SGx
- Release Notes for the Catalyst 4900M Series Switch and the Catalyst 4948E Ethernet Switch, Cisco IOS 15.1(2)SGx
- Release Notes for the Catalyst 4900M Series Switch and the Catalyst 4948E Ethernet Switch, Cisco IOS 15.1(1)SG
- Release Note for Catalyst 4900M and Catalyst 4948E Switch, Release 15.0(2)SG
- Release Note for Catalyst 4900 Series Switch, Release 15.0(2)SG
12.2(xx)SG
- Release Note for Catalyst 4948 Series Switch, Cisco IOS Release 12.2(54)SGx and 12.2(53)SGx
- Release Note for Catalyst 4900M Series Switch and Catalyst 4948E Ethernet Switch, Cisco IOS Release 12.2(54)SGx and 12.2(53)SGx
- Release Note for Catalyst 4900M Series Switch, Cisco IOS, 12.2(53)SG3
- Release Note for the Cisco 4900M Switch, Cisco IOS, 12.2(53)SG2
- Release Notes for the Cisco Catalyst 4948E-F Ethernet Switch on Release 12.2(54)WO
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Troubleshooting TechNotes
- CPU Utilization on Catalyst 4500/4000, 2948G, 2980G, and 4912G Switches That Run CatOS Software
- Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting
- Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting (PDF - 345 KB)
- Configuring a Management IP Address on Catalyst 4500/4000, 5500/5000, 6500/6000, and Catalyst Fixed Configuration Switches
- Configuring and Troubleshooting Ethernet 10/100/1000Mb Half/Full Duplex Auto-Negotiation
- Connecting a Modem to the Console Port on Catalyst Switches
- Connecting a Terminal to the Console Port on Catalyst Switches
- Errdisable Port State Recovery on the Cisco IOS Platforms
- Hardware Troubleshooting for Catalyst 4000/4912G/2980G/2948G Series Switches
- Inter-Switch Link and IEEE 802.1Q Frame Format
- MS Windows Load Balancing Server: Issues with Switching and Routing
- Managing Software Images and Working with Configuration Files on Catalyst Switches
- Network Address Translation Catalyst Switch Support Matrix
- Private VLAN Catalyst Switch Support Matrix
- Spanning Tree Protocol Problems and Related Design Considerations
- Spanning Tree Protocol Root Guard Enhancement
- System Requirements to Implement Gigabit Ethernet on Catalyst Switches
- System Requirements to Implement Trunking
- Troubleshooting Cisco Catalyst Switches to NIC Compatibility Issues
- Troubleshooting Cisco Catalyst Switches to NIC Compatibility Issues (PDF - 183 KB)
- Troubleshooting LAN Switching Environments
- Troubleshooting Switch Port and Interface Problems
- Troubleshooting Transparent Bridging Environments
- Understand and Configure Backbone Fast on Catalyst Switches
- Understanding Catalyst 2900 and Catalyst 4000 Naming Conventions
- Understanding Spanning-Tree Protocol Topology Changes
- Understanding VLAN Trunk Protocol (VTP)
- Understanding and Configuring the Cisco UplinkFast Feature
- Understanding and Configuring the Unidirectional Link Detection Protocol Feature
- Understanding and Troubleshooting DHCP in Catalyst Switch or Enterprise Networks
- Understanding and Troubleshooting HSRP Problems in Catalyst Switch Networks
- Using PortFast and Other Commands to Fix Workstation Startup Connectivity Delays
- VLAN Load Balancing Between Trunks Using the Spanning-Tree Protocol Port Priority
- WCCP negotiation fails with error: WCCP debug message: Here_I_Am packet from x.x.x.x w/bad fwd method 00000001, was offered 00000002
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