Licensing Requirements
For a complete explanation of Cisco NX-OS licensing recommendations and how to obtain and apply licenses, see the Cisco NX-OS Licensing Guide.
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
This preface includes the following sections:
For a complete explanation of Cisco NX-OS licensing recommendations and how to obtain and apply licenses, see the Cisco NX-OS Licensing Guide.
Cisco NX-OS supports multiple configuration parameters for each of the interface types supported. Most of these parameters are covered in this guide but some are described in other documents.
The following table shows where to get further information on the parameters you can configure for an interface.
Feature |
Parameters |
Further Information |
---|---|---|
Basic parameters |
Description, duplex, error disable, flow control, beacon |
Configuring Basic Interface Parameters |
Layer 3 |
Medium, IPv4 addresses |
Configuring Layer 3 Interfaces |
Layer 3 |
Bandwidth, delay, IP routing, VRFs |
Cisco Nexus® 3550-T Unicast Routing Configuration section Cisco Nexus® 3550-T Multicast Routing Configuration section |
Port Channels |
Channel group, LACP |
Configuring Port Channels |
Security |
EOU |
Cisco Nexus® 3550-T Security Configuration section |
Ethernet interfaces include routed ports.
Cisco Nexus® 3550-T switch has the following guidelines and limitations:
Cisco Nexus® 3550-T supports only 10G speed.
An access port carries traffic for one VLAN. This type of port is a Layer 2 interface only.
For more information on access ports, see the “Information About Access and Trunk Interfaces” section.
A trunk port transmits untagged packets for one VLAN plus encapsulated, tagged, packetsfor multiple VLANs. (See the IEEE 802.1Q Encapsulation section for information about encapsulation.)
You can configure Layer 2 switching ports as access or trunk ports. Trunks carry the traffic of multiple VLANs over a single link and allow you to extend VLANs across an entire network. All Layer 2 switching ports maintain MAC address tables.
A routed port is a physical port that can route IP traffic to another device. A routed port is a Layer 3 interface only.
For more information on routed ports, see the Routed Interfaces section.
You can use the management Ethernet interface to connect the device to a network for remote management using a Telnet client, the Simple Network Management Protocol (SNMP), or other management agents. The management port (mgmt0) is autosensing and operates in full-duplex mode at a speed of 10/100/1000 Mb/s.
For more information on the management interface, see the Cisco Nexus 9000 Series NX-OS Fundamentals Configuration Guide. You will also find information on configuring the IP address and default IP routing for the management interface in this document.
A port channel is a logical interface that is an aggregation of multiple physical interfaces. You can bundle up to 4 individual links to physical ports into a port channel to improve bandwidth and redundancy. You can also use port channeling to load balance traffic across these channeled physical interfaces. For more information about port-channel interfaces, see the Configuring Port Channels section.
A virtual loopback interface is a virtual interface with a single endpoint that is always up. Any packet that is transmitted over a virtual loopback interface is immediately received by that interface. Loopback interfaces emulate a physical interface.
Interfaces support stateful and stateless restarts.