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NEXUS:: Virtual Device Contexts (VDCs)

Overview VDCs are used to Virtualize Physical Hardware on NX-OS. A single physical device can be partitioned into multiple logical devices to provide fault isolation, management isolation, address...

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NEXUS:: Layer2 Switching

Overview NX-OS configuration for basic VLANs, switchport modes and trunking is almost identical to Catalyst IOS so is not covered further here. (as we all know how to drive Catalyst switches, don’t...

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NEXUS:: Fabric Extenders (FEX)

Overview Fabric Extenders (FEX) are remote line cards for the NEXUS 5K and 7K. They are administered from the parent switches and carry no intelligence and do not have Console or VTY ports. All traffic...

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NEXUS:: FEX Topologies

Overview Brief description of different types of FEX Topologies. Topologies A Single NEXUS 5K with Port-Channel to single FEX Single link from FEX to server B Single NEXUS 5K with Port-Channels to 2...

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NEXUS:: Virtual Port-Channel (vPC) Introduction

Overview A virtual Port-Channel (vPC) allows links that are physically connected to two different Cisco Nexus 5K or 7K devices to appear as a single Port-Channel to the downstream device, which could...

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NEXUS:: vPC Configuration 1 – Nexus 5K

Overview 2 NEXUS 5K parent switches with a single vPC to a downstream server. Diagram Configuration Mgmt0 is used for the peer keep-alive link and the IP address on N5K1 is 192.168.1.1/24 and N5K2 is...

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NEXUS:: vPC Configuration 2 – Nexus 7K

Overview 2 NEXUS 7K parent switches with dual vPCs to 2 downstream NEXUS 5K Diagram Configuration Both 5K Devices – Enable Features: feature lacp N5K1: (sees the vPC as a standard Port-Channel)...

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NEXUS:: Admin Supervisor Switchover

Overview Procedure to initiate an Admin SUP switchover on a Nexus 7K, for instance to replace a faulty module. Procedure Ensure the standby SUP is ready to take over: nexus# show module Mod Ports...

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NEXUS:: In-Service Software Upgrade – ISSU

Overview In a Nexus 7K with dual supervisors, ISSU can be used to upgrade the system software while the system continues to forward traffic uninterrupted. Some control-plane protocols such as AAA, NTP,...

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NEXUS:: Routing Protocol Configuration

Overview Not too much changed from IOS to NX-OS in terms of configuring routing protocols. The most notable difference is that the ‘network’ command, used to define which interfaces participate in OSPF...

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