Cisco Catalyst 4948 User Manual

DHCP Snooping 189
Feature Example 189
Verification 190
Dynamic ARP Inspection 191
Feature Example 191
Verification 192
Chapter 12 Switch Management 193
12-1: Logging 193
Configuration 194
Logging Example 198
Displaying Information About Logging 198
12-2: Simple Network Management Protocol 198
Configuration 199
SNMP Example 205
Displaying Information About SNMP 206
12-3: Switched Port Analyzer 206
SPAN Configuration 206
RSPAN Configuration 208
SPAN Examples 210
Displaying Information About SPAN 211
12-4: Power Management 213
Configuration 213
Displaying Information About Power Management 214
12-5: Environmental Monitoring 214
12-6: Packet Tracing 214
Configuration 215
Packet-Tracing Example 218
Chapter 13 Quality of Service 221
13-1: QoS Theory 221
Layer 2 QoS Classification and Marking 222
Layer 3 QoS Classification and Marking 223
Catalyst Switch Queuing 226
13-2: QoS Configuration 226
Catalyst 2000/3000 Configuration 228
All Other Catalyst Configuration 228
Displaying Information About QoS 245
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Cisco Catalyst 4948 Specifications

General

Switching Capacity	136 Gbps
Forwarding Rate	102 Mpps
Rack Units	1U
MAC Address Table Size	32, 000 entries
Authentication Method	RADIUS, TACACS+
RAM	256 MB
Flash Memory	64 MB
Power Device	Internal power supply
Voltage Required	100-240 VAC
Weight	16.5 lbs
Operating Humidity	10% to 85% non-condensing
Ports	48 x 10/100/1000
Power Supply	Internal
Layer Support	Layer 3
Jumbo Frame Support	Yes (up to 9216 bytes)
Routing Protocol	RIP, OSPF, EIGRP, BGP
Remote Management Protocol	SNMP, Telnet, SSH
Features	VLAN support, QoS
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.1Q, IEEE 802.1p
Operating Temperature	32 °F to 104 °F (0 °C to 40 °C)