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Cisco 4948 Series User Manual

Cisco 4948 Series
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© 2006 Cisco Systems, Inc. All rights reserved.
Important notices, privacy statements, and trademarks of Cisco Systems, Inc. can be found on cisco.com.
Page 6 of 16
Advanced Security
TACACS+ and RADIUS, which enable centralized control of the
Standard and extended ACLs on all ports
802.1x user authentication (with VLAN assignment, port security, voice VLAN, and guest VLAN extension)
802.1x accounting
802. 1x authentication failure
802. 1x Private VLAN assignment
802. 1x Private Guest VLAN
802. 1x Radius-supplied time out
Trusted boundary
Router ACLs (RACLs) on all ports (no performance penalty)
VLAN ACLs (VACLs)
Port ACLs (PACLs)
PVLANs on access and trunk ports
DHCP snooping
DHCP Option 82
DHCP Option 82 insertion
DHCP Option 82 pass through
Port security
Trunk port security
Sticky port security
SSHv1 and v2
VLAN Management Policy Server (VMPS) client
Unicast MAC filtering
Unicast port flood blocking
Dynamic Address Resolution Protocol (ARP) inspection switch and restrict unauthorized users from altering the configuration
IP source guard
Community PVLAN
Control Plane Policing
802.1x Unidirectional Controlled Port
Voice VLAN Sticky Port Security
Secure Copy Protocol (SCP)
802.1x Inaccessible Authentication Bypass
MAC Authentication Bypass
Traffic and Congestion Management
Number of queues: four queues per port
Type of buffers: Dynamic
Switch Architecture Specifications
Packet buffering: Dynamic, 16 MB shared memory
CPU speed: 266 MHz
Flash memory: 64 MB
Synchronous dynamic RAM (SDRAM): 256 MB

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Cisco 4948 Series Specifications

General IconGeneral
Rack Units1U
ModelCisco Catalyst 4948
Ports48
Uplink Ports4 x 10 Gigabit Ethernet
Layer SupportLayer 2
MAC Address Table Size32000 entries
Jumbo Frame Support9216 bytes
Routing ProtocolRIP, OSPF, BGP, EIGRP, HSRP, VRRP
Remote Management ProtocolSNMP, Telnet, SSH, HTTP, HTTPS
Authentication MethodRADIUS, TACACS+
FeaturesQuality of Service (QoS), Access Control Lists (ACLs), VLAN support, Port Security, DHCP Snooping
Compliant StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.3ab, IEEE 802.3x
Weight7.7 kg
Operating Temperature0 °C to 40 °C
Operating Humidity10% to 85% non-condensing

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