Contents
What is back to back vPC?
A back-to-back vPC is a way of connecting two pairs of Nexus switches with vPC. Depending on the documentation, it is also known as Multi-Layer vPC or Double-Sided vPC. When a device connects to a pair of switches, it will do so with a regular port channel or LAG. It is unaware that there is a vPC at the other end.
What happens when vPC peer link goes down?
2) vPC Peer Link is Down –> All of the vPC Member ports of the Secondary vPC Member will be shut down if the Keep-Alive Link is up. –> Impact on the Data Traffic. –> vPC Primary only would be to continue to forward the traffic from member ports.
Can vPC be formed between 2 Vdcos on the same device?
Consolidating a vPC pair (two vPC peer devices of the same domain) in two VDCs of the same physical device is not supported. The vPC peer link must use 10-Gigabit Ethernet ports for both ends of the link or the link will not form.
What is vPC in data center?
A virtual private cloud (VPC) is an on-demand configurable pool of shared resources allocated within a public cloud environment, providing a certain level of isolation between the different organizations (denoted as users hereafter) using the resources.
What is enhanced vPC?
Enhanced vPC is a method that allows the connection of FEX in an active-active manner using vPC between the FEX and upstream Nexus switch, and at the same time connection of a device to the FEX host interfaces with a vPC.
What is vPC+ in Nexus?
vPC (Virtual Port-Channel), also known as multichassis EtherChannel (MEC) is a feature on the Cisco Nexus switches that provides the ability to configure a Port-Channel across multiple switches (i.e. vPC peers). vPC is similar to Virtual Switch System (VSS) on the Catalyst 6500s.
How does fabric path work?
Cisco’s Fabricpath is scalable and allows for many active uplinks. It does this by creating a layer-2 fabric or mesh of active links between switches. It is able to make all the links active by taking layer-3 concepts, and applying them at layer-2. FabricPath uses the IS-IS routing protocol.
What does Cisco back to back VPC look like?
Cisco mentions back-to-back vPCs in the Cisco Data Center Interconnect Design and Implementation Guide under the “2 Sites vPC-vPC Case Study”, and also calls them multi-layer vPCs in their recent configuration guides. I decided put together a set of configurations on paper to see what they would look like on N7Ks.
How many VLANs are on a Cisco FabricPath switch?
You should configure the Cisco FabricPath VLANs consistently on all the Cisco FabricPath switches in a particular topology (Figure 4). In this example, VLANs 10 to 100 are Cisco FabricPath VLANs, so they must be configured as such on every switch running Cisco FabricPath in the network (the network has only a single topology).
When was Cisco FabricPath deployed in the field?
Cisco®FabricPath has been deployed and running in the field since end of 2010, and thousands of customers have now acquired Cisco FabricPath licenses for their networks. This document introduces some best practices that are mainly the results of their experiences.
Is there such a thing as double sided VPC?
Double-sided vPC: In double-sided vPC both the Nexus 7000 and Nexus 5000 switches run vPC. Each vPC pair of Nexus 5000 switches is connected to the aggregation vPC pair using a unique vPC.