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Cisco Catalyst 4948 User Manual

Cisco Catalyst 4948
359 pages
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3-4: Managing Modules 34
Viewing Modules 34
Accessing Modules 34
Resetting Modules 34
Powering Modules Up and Down 35
3-5: File Management and Boot Parameters 35
Navigating File Systems 36
Deleting Files from Flash 38
Copying System Files 39
File System Boot Parameters 40
Alias Commands 41
3-6: Redundant Supervisors 42
Forcing a Change to the Standby Supervisor 43
Synchronizing IOS Images 44
Synchronizing Boot Parameters 45
3-7: Cisco Discovery Protocol 46
Configuration of CDP 46
Feature Example 47
3-8: Time and Calendar 47
System Time Configuration 48
Setting the System Time Manually 48
Setting the System Time Through NTP 49
Example 50
Chapter 4 Layer 2 Interface Configuration 53
4-1: Switching Table 53
Configuration 53
Displaying Information About the Switching Table 54
Switching Table Example 54
4-2: Port Selection 56
Configuration 56
Port Selection Example 57
4-3: Ethernet 57
Configuration 57
Ethernet Example 60
Displaying Information About Layer 2 Interfaces 61
x Cisco LAN Switching Configuration Handbook

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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)

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