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4 or 8 10/100/1000BASE-TX ports
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● The switches offer line-rate forwarding for Layer 2 traffic on each port.
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Autosensing, autonegotiation, and Automatic Media-Dependent Interface Crossed Over (Auto-MDIX)
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● Autosensing allows the switch to detect the speed of the attached device and automatically configure the port for 10-, 100-, or 1000-Mbps operation.
● Autonegotiation allows the switch to automatically select half- or full-duplex transmission mode to optimize bandwidth on all the ports of the NIM.
● Auto-MDIX allows the switch to automatically detect cable type (straight-through vs. crossover) between an attached device and the switch port.
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Integrated switching
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● Integrated switching provides fewer points of management for remote and small branch offices.
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Intrachassis stacking or cascading
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● Grouping LAN switch NIMs together is called cascading. The NIMs are capable of cascading on all Cisco 4000 Series ISRs using the internal MGF.
● Cascading of multiple LAN switch NIMs over the MGF allows multiple NIMs to behave as a single switch.
● Layer 2 switching of packets can be internal to each LAN switch NIM, or they can go through the MGF when multiple LAN switch NIMs in the system are acting as a unified switch. The router CPU is not involved in this operation.
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IEEE 802.1P QoS (Traffic Prioritization)
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● This feature supports QoS based on the IEEE 802.1P class of service (CoS) and port-based prioritization, allowing the switch to change the CoS settings of tagged packets on a per-port basis.
● Each port has four QoS queues. Strict priority is enforced by default. The routers support SDWRR with configurable weight on each queue.
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802.1Q Trunking
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● This feature provides an industry wide VLAN tagging standard, allowing for trunks also to be set up to third-party devices.
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802.1D Spanning Tree Protocol
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● This industry-standard link layer network protocol helps ensure a loop-free topology between Layer 2 devices regardless of vendor. IEEE 802.1D Spanning Tree Protocol is turned off by default.
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Voice VLAN (VVLAN)
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● VVLANs enable Cisco IP phones to place voice and data in their own separate VLANs. The NIM switch port is manually configured as a trunk port to support voice and data VLANs on the same port. The switch then uses Cisco Discovery Protocol to dynamically configure the Cisco IP phones.
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IEEE 802.1X authentication
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● Support for 802.1X port-based authentication, single/multiple host mode, guest VLAN, MAC Authentication Bypass (MAB), restricted VLAN, critical VLAN, and dynamic VLAN.
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PoE+ (option)
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● Cisco Gigabit Ethernet technology with the appropriate PoE+ module and internal power supply can power Cisco IP phones and wireless access points. Support is provided for both IEEE 802.3af (PoE) and IEEE802.3at (POE+).
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IP Multicast management support
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● The routers provide Internet Group Management Protocol (IGMP) Snooping in hardware for management support.
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SNMP management
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● SNMP allows management of the MIB through a MIB browser.
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Cisco IOS® Software CLI
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● This feature provides configuration through the Cisco IOS Software CLI and provides a common user interface for all the router functions.
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CiscoWorks support
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● CiscoWorks network management software enables management on a per-port and per-switch basis, providing a common management interface for Cisco routers, switches, and hubs.
● SNMPv1, v2, and v3 (noncryptographic) and Telnet interface support delivers comprehensive in-band management, and a CLI management console provides detailed out-of-band management.
● Cisco Discovery Protocol Versions 1 and 2 enable a CiscoWorks network management station to automatically discover the switch in a network topology.
● Support is provided by the CiscoWorks LAN Management Solution.
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Cisco Discovery Protocol Versions 1 and 2
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● This protocol enables a CiscoWorks network management station to automatically discover the switch in a network topology.
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Cisco VLAN Trunking Protocol
(VTP; client, server, and transparent modes)
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● Cisco VTP supports dynamic VLAN configuration across Cisco switches.
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Cisco Configuration Professional -based configuration and device management
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● This feature simplifies initial configuration of a switch through a web-based GUI, eliminating the need for more complex terminal emulation programs and CLI knowledge.
● Cisco Discovery Protocol reduces the cost of deployment by helping less-skilled personnel set up switches quickly and simply.
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Status-indicator LEDs
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● Two LEDs per port provide visual indication of the switch-port status and PoE status.
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