Cisco Catalyst 4948 User Manual

7-3: STP Convergence Tuning 124
Configuring STP Convergence Tuning 125
7-4: Navigating the Spanning-Tree Topology 126
Chapter 8 Configuring High Availability Features 131
8-1: Route Processor Redundancy (RPR/RPR+) 131
Configuration 132
Displaying Information About RPR 132
8-2: Non-Stop Forwarding/Supervisor Switchover (NSF/SSO) with Supervisor
Redundancy 132
SSO/NSF Configuration 133
Displaying Information About SSO and NSF 135
8-3: Router Redundancy with HSRP 135
Configuration 136
HSRP Example 137
Displaying Information About HSRP 138
8-4: Fast Software Upgrade (FSU) and Enhanced Fast Software Upgrade
(eFSU) 138
Chapter 9 Multicast 141
9-1: Multicast Addressing 141
9-2: IGMP Snooping 142
Configuration 143
IGMP Snooping Example 144
Displaying Information About IGMP Snooping 145
Chapter 10 Server Load Balancing (SLB) 147
10-1: SLB 147
Configuration 149
SLB Example 155
Displaying Information About SLB 157
10-2: SLB Firewall Load Balancing 158
Configuration 159
Firewall Load-Balancing Example 161
Displaying Information About Firewall Load Balancing 164
10-3: SLB Probes 164
Configuration 165
Displaying Information About SLB Probes 166
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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)