- New and Changed Information
- Preface
- Overview
- Tools
- Installation
- Licenses
- Upgrade
- High Availability
- VSM and VEM Modules
- Ports
- Port Profiles
- Port Channels and Trunking
- Layer 2 Switching
- VLANs
- Private VLANs
- NetFlow
- ACLs
- Quality of Service
- SPAN
- Multicast IGMP
- DHCP, DAI, and IPSG
- Virtual Service Domain
- System
- Network Segmentation Manager
- VXLANs
- VSI Discovery and Configuration Protocol
- Cisco TrustSec
- VC Plugin
- Ethanalyzer
- Before Contacting Technical Support
- Index
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).
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 which are a more scalable alternative when compared to the host-based overlays for segmentation and enable access to more than four thousand 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.
Problems with VDP
The following are symptoms, possible causes, and solutions for problems with VDP.
VDP Troubleshooting Commands
This section contains the following topics:
VSM Commands
You can use the commands in this section to troubleshoot problems related to VDP.
EXAMPLES
Example 24-1 show evb vsi interface
VEM Commands
You can use the VEM commands in this section to troubleshoot problems related to VDP.
EXAMPLES
Example 24-5 vemcmd show segment
Example 24-7 vemcmd show bd bd-name