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Product Support
Switches
Cisco Catalyst 4900 Series Switches
Cisco Catalyst 4948 Switch
Specifications Overview
Series
Cisco Catalyst 4900 Series Switches
Overview
Product Overview
Product Type
Campus LAN Switches - Core and Distribution
Status
Orderable
Buy
Release Date
27-SEP-2004
Product ID
View All PIDs
4031360
C4948-ACC-KIT
HPC-E-4948
HPC-E-4948-10GE
PWR-C49-300AC
PWR-C49-300AC-RF
PWR-C49-300AC-WS
PWR-C49-300AC/2
PWR-C49-300AC/2-RF
PWR-C49-300AC=
PWR-C49-300DC
PWR-C49-300DC-RF
PWR-C49-300DC-WS
PWR-C49-300DC/2
PWR-C49-300DC=
RACK-IB-10GE-BUN
RACK-IB-1GE-BUN
WS-C4900-SW-LIC
WS-C4900-SW-LIC=
WS-C4948
WS-C4948-10GE-E
WS-C4948-10GE-E-RF
WS-C4948-10GE-E-WS
WS-C4948-10GE-S
WS-C4948-10GE-S-RF
WS-C4948-10GE-S-WS
WS-C4948-10GEBDL
WS-C4948-BDL
WS-C4948-E
WS-C4948-E-RF
WS-C4948-E-WS
WS-C4948-RF
WS-C4948-S
WS-C4948-S-RF
WS-C4948-S-WS
WS-C4948-WS
WS-X4908-10GE-RJ
Compatibility
Compatible Interfaces and Modules
10GBASE-CX4 X2 Module
10GBASE-ER X2 Module
10GBASE-LR X2 Module
10GBASE-LX4 X2 Module
10GBASE-SR X2 Module
Visio Stencil
(2 MB .zip file)
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Worldwide Support Phone Numbers
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Documentation
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My Recently Viewed
Recently viewed documents for this product will appear here.
Latest Security Notices
29-Jul-2020
Bulletin: Cisco IOS Software Release 12.2(31)SG for Cisco Catalyst 4900 Series Switches
10-Sep-2018
Field Notice: FN - 63746 - Catalyst C4500 and Catalyst 49xx Might Fail to Boot Up After a Software Upgrade or Power Cycle - Replace on Failure
Document Categories
Configuration
Data Sheets and Product Information
Design
Install and Upgrade
Literature
Maintain and Operate
Reference
Release and Compatibility
Security Notices
Troubleshooting
Data Sheets and Product Information
At-a-Glance
Cisco Network Assistant At-a-Glance
14-May-2008
(PDF - 371 KB)
Data Sheets
Cisco Catalyst 4948 10 Gigabit Ethernet Switch Data Sheet
10-Aug-2014
Cisco Catalyst 4948 Switch Data Sheet
15-Jan-2016
Cisco Catalyst 4900M Switch Data Sheet
10-Aug-2014
End-of-Life and End-of-Sale Notices
English
End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948E Switch Accessories
03-Aug-2020
End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948E Ethernet Switch
01-Feb-2019
End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4900M Switch
29-Mar-2018
End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948 Switch Accessories
25-Jul-2014
End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948 Switch
29-Mar-2018
End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 4948-10GE, Cisco Catalyst 4928-10GE, and Cisco ME 4924-10GE Switches
29-Mar-2018
French - Canadian
Annonce d’arrêt de commercialisation et de fin de vie de Cisco Catalyst 4948E Switch Accessories
03-Aug-2020
Annonce d’arrêt de commercialisation et de fin de vie des commutateurs Cisco Catalyst 4900M
03-Nov-2015
Annonce d’arrêt de commercialisation et de fin de vie des commutateurs Ethernet Cisco Catalyst 4948E
31-Oct-2016
Security Notices
Bulletins
Cisco IOS Software Release 12.2(31)SG for Cisco Catalyst 4900 Series Switches
29-Jul-2020
Field Notices
Cisco Catalyst 4948 Switch
Field Notice: FN - 63746 - Catalyst C4500 and Catalyst 49xx Might Fail to Boot Up After a Software Upgrade or Power Cycle - Replace on Failure
10-Sep-2018
Release and Compatibility
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
04-Dec-2017
Release Notes for the Catalyst 4900M Series Switch and the Catalyst 4948E Ethernet Switch, Cisco IOS 15.1(1)SG
30-Jun-2014
Release Note for Catalyst 4900M and Catalyst 4948E Switch, Release 15.0(2)SG
28-Apr-2011
Release Note for Catalyst 4900 Series Switch, Release 15.0(2)SG
03-Nov-2016
12.2(xx)SG
Release Note for Catalyst 4948 Series Switch, Cisco IOS Release 12.2(54)SGx and 12.2(53)SGx
18-Aug-2014
Release Note for Catalyst 4900M Series Switch and Catalyst 4948E Ethernet Switch, Cisco IOS Release 12.2(54)SGx and 12.2(53)SGx
18-Aug-2014
Release Note for Catalyst 4900M Series Switch, Cisco IOS, 12.2(53)SG3
27-Aug-2010
Release Note for the Cisco 4900M Switch, Cisco IOS, 12.2(53)SG2
09-Jun-2010
Release Notes for the Cisco Catalyst 4948E-F Ethernet Switch on Release 12.2(54)WO
21-Dec-2010
Reference
Command References
Catalyst 4500 Series Switch Cisco IOS Command Reference, IOS XE 3.8.xE and IOS 15.2.(4)Ex
18-Apr-2016
Command Reference BookMap123
29-Apr-2010
Design
Design TechNotes
Connecting a Modem to the Console Port on Catalyst Switches
12-Feb-2019
Connecting a Terminal to the Console Port on Catalyst Switches
16-Nov-2007
Inter-Switch Link and IEEE 802.1Q Frame Format
25-Aug-2006
Network Address Translation Catalyst Switch Support Matrix
05-Apr-2006
Spanning Tree Protocol Problems and Related Design Considerations
05-Dec-2017
Spanning Tree Protocol Root Guard Enhancement
30-Aug-2005
System Requirements to Implement Gigabit Ethernet on Catalyst Switches
20-Dec-2005
System Requirements to Implement Trunking
10-Aug-2006
Understanding Catalyst 2900 and Catalyst 4000 Naming Conventions
25-Feb-2019
Understanding VLAN Trunk Protocol (VTP)
29-Sep-2014
Understanding and Configuring the Cisco UplinkFast Feature
18-Aug-2008
Understanding and Configuring the Unidirectional Link Detection Protocol Feature
09-Jul-2007
Understanding and Troubleshooting DHCP in Catalyst Switch or Enterprise Networks
17-Nov-2008
Using PortFast and Other Commands to Fix Workstation Startup Connectivity Delays
19-Dec-2008
Install and Upgrade
Install and Upgrade Guides
Cisco Catalyst 4948 Switch
Catalyst 4948 Install Guide
06-May-2007
Catalyst 4900 Family Center Rack-Mount Kits Installation Note
19-Jan-2011
Catalyst 4900 Series Switch Installation Guide
03-Apr-2006
Cisco Catalyst 4900M Switch Installation Guide
06-Jan-2016
Install and Upgrade TechNotes
Configuration example to migrate Spanning Tree from PVST+ to MST
13-Dec-2006
Configuration example to migrate Spanning Tree from PVST+ to MST
26-Sep-2014
Configuration
Configuration Examples and TechNotes
Most Recent
Configuring and Troubleshooting Ethernet 10/100/1000Mb Half/Full Duplex Auto-Negotiation
15-Jul-2020
Connecting a Modem to the Console Port on Catalyst Switches
12-Feb-2019
Configuring EtherChannel and 802.1Q Trunking with Catalyst 2948G-L3s and CatOS Based Switches
01-Oct-2014
Understanding VLAN Trunk Protocol (VTP)
29-Sep-2014
Configuration example to migrate Spanning Tree from PVST+ to MST
26-Sep-2014
Spanning Tree from PVST+ to Rapid-PVST Migration Configuration Example
26-Sep-2014
Configuring VLAN Trunk Protocol (VTP)
24-Sep-2014
Creating Ethernet VLANs on Catalyst Switches
02-May-2014
Managing Software Images and Working with Configuration Files on Catalyst Switches
15-Oct-2009
Using PortFast and Other Commands to Fix Workstation Startup Connectivity Delays
19-Dec-2008
EtherChannel Between Catalyst 3550/3560/3750 Series Switches and Catalyst Switches Running Cisco IOS System Software Configuration Example
25-Sep-2008
Understanding and Configuring the Cisco UplinkFast Feature
18-Aug-2008
Configuring EtherChannel Between a Catalyst Switch Running CatOS and a Workstation or Server
12-Jul-2007
Understanding and Configuring the Unidirectional Link Detection Protocol Feature
09-Jul-2007
All Transparent VTP Domain to Server-Client VTP Domain Migration Configuration Example
02-Feb-2007
View all documentation of this type
Configuration Guides
Catalyst 4900 and 4500 switches share configuration information. Refer to the documentation at the locations below:
Catalyst 4500 Series Switch Software Configuration Guide, IOS XE 3.8.0E and IOS 15.2(4)E
25-Apr-2016
Maintain and Operate
Maintain and Operate TechNotes
Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting
29-Aug-2008
Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting
23-Sep-2014
(PDF - 345 KB)
Managing Software Images and Working with Configuration Files on Catalyst Switches
15-Oct-2009
Troubleshooting
Password Recovery
Password Recovery Procedure for Catalyst 4500/4000 Supervisor Engine II+/II+TS/II+10GE/III/IV/V/V 10GE Module and Catalyst 4900 Switches that Run Cisco IOS Software
26-Aug-2008
Troubleshooting TechNotes
Most Recent
Configuring and Troubleshooting Ethernet 10/100/1000Mb Half/Full Duplex Auto-Negotiation
15-Jul-2020
Understanding and Troubleshooting HSRP Problems in Catalyst Switch Networks
21-Aug-2019
Understanding Catalyst 2900 and Catalyst 4000 Naming Conventions
25-Feb-2019
Connecting a Modem to the Console Port on Catalyst Switches
12-Feb-2019
Spanning Tree Protocol Problems and Related Design Considerations
05-Dec-2017
Understand and Configure Backbone Fast on Catalyst Switches
19-Apr-2016
Errdisable Port State Recovery on the Cisco IOS Platforms
23-Mar-2016
Understanding VLAN Trunk Protocol (VTP)
29-Sep-2014
Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting
23-Sep-2014
(PDF - 345 KB)
Troubleshooting Cisco Catalyst Switches to NIC Compatibility Issues
19-Sep-2014
(PDF - 183 KB)
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
12-Aug-2014
Troubleshooting Cisco Catalyst Switches to NIC Compatibility Issues
27-Oct-2009
Managing Software Images and Working with Configuration Files on Catalyst Switches
15-Oct-2009
Hardware Troubleshooting for Catalyst 4000/4912G/2980G/2948G Series Switches
30-Sep-2009
Troubleshooting Switch Port and Interface Problems
03-Apr-2009
View all documentation of this type
Literature
Brochures
Cisco Switch Guide
07-Sep-2011
White Papers
Latency Busters Messaging 3.3.9 with Cisco Catalyst 4900M
29-May-2009
(PDF - 1 MB)
Downloads
Community
Cisco Community Home
Start A Discussion
Latest Community Activity For This Product
Solved Issues
Community Documents
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Specifications
AC/DC Support
AC/DC
Dimensions (H x W x D)
1.75 x 17.3 x 16.1 in. (4.45 x 43.91 x 40.99 cm.)
Max. Watt Power Consumption
300
Packets per second (Mpps)
72