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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 1 Overview
Features
IEEE 802.1x accounting to track network usage
IEEE 802.1x readiness check to determine the readiness of connected end hosts before
configuring IEEE 802.1x on the switch
Quality of Service and Class of Service Features
Configurable control-plane queue assignment to assign control plane traffic for CPU-generated
traffic to a specific egress queue.
Cisco modular quality of service (QoS) command-line (MQC) implementation
Classification based on IP precedence, Differentiated Services Code Point (DSCP), and IEEE
802.1p class of service (CoS) packet fields, ACL lookup, or assigning a QoS label for output
classification
Policing
One-rate policing based on average rate and burst rate for a policer
Two-color policing that allows different actions for packets that conform to or exceed the rate
Aggregate policing for policers shared by multiple traffic classes
Weighted tail drop (WTD) as the congestion-avoidance mechanism for managing the queue lengths
and providing drop precedences for different traffic classifications
Table maps for mapping DSCP, CoS, and IP precedence values
Queuing and Scheduling
Shaped round robin (SRR) traffic shaping to mix packets from all queues to minimize traffic
burst
Class-based traffic shaping to specify a maximum permitted average rate for a traffic class
Port shaping to specify the maximum permitted average rate for a port
Class-based weighted queuing (CBWFQ) to control bandwidth to a traffic class
WTD to adjust queue size for a specified traffic class
Low-latency priority queuing to allow preferential treatment to certain traffic
Per-port, per-VLAN QoS to control traffic carried on a user-specified VLAN for a given interface.
Beginning with IOS software release 12.2(25)SEG, you can use hierarchical policy maps for
per-VLAN classification and apply the per-port, per-VLAN hierarchical policy maps to trunk ports.
Layer 2 Virtual Private Network Services
Layer 2 virtual private network (VPN) features are only available when the switch is running the metro
IP access or metro access image.
IEEE 802.1Q tunneling enables service providers to offer multiple point Layer 2 VPN services to
customers
Layer 2 protocol tunneling to enable customers to control protocols such as BPDU, CDP, VTP,
PAgP, LACP, and UDLD protocols to be tunneled across service-provider networks.