Sophisticated qos and traffic management, Predictable performance, Comprehensive management – Cisco 4948 User Manual

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IGMP v1, v2, and v3

IGMP filtering on access and trunk ports

IP Multicast routing protocols: PIM, SSM, and Distance Vector Multicast Routing Protocol (DVMRP)

Pragmatic General Multicast (PGM)

Cisco Group Multicast Protocol server

Full Internet Control Message Protocol (ICMP) support

ICMP Router Discovery Protocol

Policy-based routing (PBR)

Virtual Route Forwarding lite (VRF-lite)

IPv6 (software switched)

OSPF fast convergence

Sophisticated QoS and Traffic Management

Per-port QoS configuration

Support for four queues per port

Strict priority queuing

IP differentiated services code point (DSCP)

Classification and marking based on IP type of service (ToS) or DSCP

Classification and marking based on full Layer 3 and Layer 4 headers

Input and output policing based on Layer 3 and Layer 4 headers

Support for 512 policers on ingress and 512 policers on egress

Shaping and sharing output queue management

DBL—congestion-avoidance feature

No performance penalty for granular QoS functions

Per-port, per-vlan QoS

Predictable Performance

136 Gbps switching fabric

Layer 2 hardware forwarding at 102 mpps

Layer 3 hardware-based IP Cisco Express Forwarding routing at 102 mpps

Layer 4 TCP/User Datagram Protocol (UDP) hardware-based filtering at 102 mpps

No performance penalty with advanced Layer 3 and Layer 4 services enabled

Software-based learning at a sustained rate of 3000 hosts per second

Support for 55,000 unicast and 16000 multicast MAC addresses

Support for 32,000 entries in routing table (shared between unicast and multicast)

Scalability to 2000 virtual ports (VLAN port instances)

Bandwidth aggregation up to 40 Gbps using Cisco Gigabit Ethernet EtherChannel technology

Hardware-based multicast management

Hardware-based ACLs, router ACLs (RACLs), VLAN ACLs

Comprehensive Management

Manageable through Cisco Network Assistant

Single console port and single IP address to manage all system features

Software configuration management, including local and remote storage

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