Configuring the Cisco Discovery Protocol (CDP) with ESX Server

Introduced with ESX 3.5, is the ability to use the Cisco Discovery Protocol (CDP).

To Configure the ESX 3.5 host:  

1. Log in as root to the Service Console (via SSH, remote console, or physical console).
2. Verify the current CDP setting for the desired virtual switch (vSwitch1, in this example).[root@server root]# esxcfg-vswitch -b vSwitch1
   downThe output of down indicates CDP is currently not implemented
3. Set the CDP status for a given virtual switch. Possible values here are down, listen, advertise, or both.[root@server root]#  esxcfg-vswitch -B both vSwitch1
4. Verify the new setting:[root@server root]# esxcfg-vswitch -b vSwitch1
   both

The following is an example of configuring CDP for a Cisco 6500 physical switch:

1. switch#
2. switch# config terminal
3. switch(config)# cdp run
4. switch(config)# interface g1/1
5. switch(config-if)# cdp enable
6. switch# show cdp neighborsCapability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
                   S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone
   Device ID                        Local Intrfce   Holdtme   Capability  Platform         Port ID
   pa-tse-h24.pasl.vmware.com Gig   1/1             121       S           VMware ESXvmnic2
   pa-tse-h24.pasl.vmware.com Gig   1/2             121       S           VMware ESXvmnic3

In VI Client, got o Configuration tabm then click on Networking:

 

 

Source: vmware.com and vmetc.com