![]() You can rely on Spanning Tree for establishing redundant links from a Nexus pair to dual Core’s, with only one uplink marked as active by STP.This configuration only applies if there is NOT VSS established between the Catalyst 6509 core’s.Here is a useful Cisco reference document on vPC for the Nexus 5000 series. Id Port Status Consistency Reason Active vlans (*) – local vPC is down, forwarding via vPC peer-linkĬonfiguration consistency status: success ![]() Repeat this process for the 2nd Catalyst switch. Until this step is complete, the vPC status will show as down. Here we will create ONE port channel per Catalyst, consisting of the uplinks from each Nexus switch, so that the Catalyst will see the Nexus pair as a single switch. Also, the Allowed VLAN’s should match the VLAN ID’s allowed in the peer-link.įinally, create the port channels on the Catalyst side. Notice that spanning-tree Loop Guard has been enabled on the uplinks to prevent STP looping issues. We will create one port-channel per uplink interface. Next you need to create the virtual port-channels on the Nexus side. The peer-link must include at least 2 interfaces. To setup vPC on the Nexus switches, first you need to create a vPC peer-link between the pair of Nexus switches. Here is a diagram of the planned configuration of vPC uplinks between the Nexus 5596UP and Catalyst 6509 (core) switches: The Nexus switches support vPC (Virtual Port Channels), which “allows links that are physically connected to two different Cisco Nexus 5000 Series switches or Cisco Nexus 2000 Series Fabric Extenders to appear as a single port channel by a third device.” (Cisco) ![]() The Nexus 5000 series is primarily aimed at the edge, with Layer 3 capabilities available as an add-on. The Nexus switches represent Cisco’s presence in the Converged Fabric segment, which is gaining momentum recently as more IT shops seek to streamline datacenter infrastructure towards a “private cloud” approach. I recently had the opportunity to deploy a Cisco Nexus solution 5596UP switches for a healthcare customer. Posted on AugUpdated on September 14, 2015 Cisco Nexus 5596’s with Redundant Uplinks to Catalyst 6509 Core’s Using vPC ![]()
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