Cisco 4948 Series - Manual (Page 6)

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