Chapter 26 Vsi Discovery And Configuration Protocol; Information About Vdp - Cisco Nexus 1000V Troubleshooting Manual

VSI Discovery and Configuration Protocol
This chapter describes how to identify and resolve problems that might occur when implementing the
VSI Discovery and Configuration Protocol (VDP) and includes the following sections:
•
•
•

Information About VDP

VDP on the Cisco Nexus 1000V is an implementation of the IEEE standard 802.1Qbg/D2.2 (Edge
Virtual Bridging). VDP can detect and signal the presence of end hosts and exchange capability with an
adjacent VDP-capable bridge. VDP serves as a reliable first-hop protocol and communicates the
presence of end-host Virtual Machines (VMs) to adjacent leaf nodes on the Cisco Dynamic Fabric
Automation (DFA) architecture. In addition to detecting the MAC and IP addresses of the end-host VMs
when a host comes up, or during VM mobility events, the VDP triggers auto-configuration of leaf nodes
on the DFA architecture to make them ready for more VM traffic.
VDP enables network-based overlays that are a more scalable alternative when compared to the
host-based overlays for segmentation and enable access to more than 4000 VLANs in a multi-tenant
network. With the VDP configured on the Cisco Nexus 1000V, segmentation support for bridge domains
is extended to native encapsulated bridge domains. The original VXLAN-based bridge domains can also
coexist with these bridge domains.
For more information about the Cisco DFA architecture, see the Cisco DFA Solutions Guide.
OL-31593-01
Information About VDP, page 26-1
Problems with VDP, page 26-2
VDP Troubleshooting Commands, page 26-2
C H A P T E R
Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
26
26-1