What is FabricPath in Cisco Nexus?

What is FabricPath in Cisco Nexus?

Fabricpath is a Cisco proprietary protocol, found on some of the Nexus switch range, such as the N5K and N7K. Fabricpath is not supported on the N3K or N9K series. These switches support VxLAN based fabric. This is an alternate way to put non-blocking uplinks in place.

What is vPC and vPC+?

vPC and FabricPath. vPC connects hosts and other devices to the network. It does this in a highly available way, using many active links. vPC+ is an extension to traditional vPC. It connects Classical Ethernet devices to a Fabricpath domain.

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 is difference between VLAN and VxLAN?

The main difference is that VLAN uses the tag on the layer 2 frame for encapsulation and can scale up to 4000 VLANs. VXLAN, on the other hand, encapsulates the MAC in UDP and is capable of scaling up to 16 million VxLAN segments.

What is vPC in Nexus switch?

vPC (Virtual Port Channel) is the Cisco Proprietary feature that is only working on Cisco Nexus Components. vPC use to make Nexus devices logically single devices for the end host or devices. vPC is also known as Multi-chassis EtherChannel (MEC).

What is the use of configuring peer gateway on both N7K1 and N7K2?

N7K2 will forward the packet to N7K1 via peer-link where the inter-vlan routing occurs. N7K1 has to forward the packet to host-2 via vPC 20, where vPC loop prevention mechanism kicks in and eventually the packet will get dropped.

What is Nexus OTV?

OTV Terminology Is a device (Nexus 7000 or Nexus 7000 VDC) that sits at the edge of a data center, performing all the OTV functions, with the purpose to connect to other data centers. The OTV edge device is connected to the layer2 DC domain as well as the IP transport network.

What is VDC in Nexus?

The Nexus 7000 NX-OS software supports Virtual Device Contexts (VDCs), VDC(s) allow the partitioning of a single physical Nexus 7000 device into multiple logical devices. This logical separation provides the following benefits: Administrative and management separation.

What is split brain in vPC?

Basically, in the vPC world, all links are set to forward, and nothing blocks at layer-2 because Spanning Tree is not really in place here. Cisco calls it a “split-brain” scenario. If that vPC peer-link fails for any reason, both switches assume the role of primary. This then creates the forwarding-loop-from-hell.

How many switches can be in a vPC domain?

two
The maximum number of switches in a vPC domain is two. The maximum number of vPC peers per switch or VDC is one. When Static routing from a device to vPC peer switches with next hop, FHRP virtual IP is supported. Dynamic routing adjacency from vPC peer switches to any Layer3 device connected on a vPC is not supported.