22.05.2017 Views

nx.os.and.cisco.nexus.switching.2nd.edition.1587143046

Nexus Switching 2nd Edition

Nexus Switching 2nd Edition

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Chapter 12. Layer 3 Virtualization <strong>and</strong> Multiprotocol Label<br />

Switching (MPLS)<br />

This chapter covers the following topics:<br />

• Virtual Routing <strong>and</strong> Forwarding (VRF):<br />

• VRF, VRF-Lite, VRF Import-Export<br />

• Configuration examples<br />

• Multiprotocol Label Switching (MPLS):<br />

• Introduction<br />

• Terminology<br />

• Layer 3 virtual private networks (VPNs), Traffic Engineering, 6PE <strong>and</strong> 6VPE, highavailability<br />

• Management <strong>and</strong> Troubleshooting: LSP Ping/Trace <strong>and</strong> TE Tunnel Ping/Trace<br />

• Configuration examples<br />

• Nexus hardware requirements <strong>and</strong> NX-OS licensing for MPLS <strong>and</strong> VRF<br />

Virtual Routing <strong>and</strong> Forwarding<br />

Virtual Routing <strong>and</strong> Forwarding provides logical network segmentation by virtualizing both<br />

the routing control plane <strong>and</strong> data plane functions into autonomous instances. Routing<br />

protocols <strong>and</strong> interfaces, both physical <strong>and</strong> logical, become members of a specific VRF<br />

instance via configuration. For each VRF, IPv4 <strong>and</strong> IPv6 tables are created automatically<br />

<strong>and</strong> independent routing <strong>and</strong> forwarding decisions are made. NX-OS supports up to 1000<br />

unique VRF instances, whether defined in a single Virtual Device Context (VDC) or spread<br />

acr<strong>os</strong>s multiple VDCs.<br />

In NX-OS, all components were designed from the ground up to be VRF-capable. This<br />

includes management services, network services, routing protocols, <strong>and</strong> uniform<br />

configuration <strong>and</strong> operational parameters, such as the following:<br />

• VRF-Specific Static ARP<br />

• VRF-Aware Ping<br />

• PBR-set VRF<br />

• VRF-Aware SCP<br />

• VRF-Aware AAA (RADIUS)<br />

• VRF-Aware SNMP Agent<br />

• VRF-Aware AAA (TACACS+)<br />

• VRF-Aware SSH<br />

• VRF-Aware BGP<br />

• VRF-Aware Syslog<br />

• VRF-Aware DHCP

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!