CiscoNexus and VMWare

I am trying to remove the VIB of VEM from ESXi

And this is how to do it.

1. Enable SSH in your ESxi, login to ESXi Shell
2. #vem stop
3. #esxcli software vib list | grep cisco
4. #esxcli software vib remove --vibname=cisco-vem-v162-esx --maintenance-mode
   Removal Result
      Message: Operation finished successfully.
      Reboot Required: false
      VIBs Installed:
      VIBs Removed: Cisco_bootbank_cisco-vem-v162-esx_4.2.1.2.2.1a.0-3.2.1
      VIBs Skipped:

With the 1000v, the intention is you're SPAN/ERSPAN traffic to your own sniffing device.  Either another switch (Cat6500), Wireshark Host/VM or other traffic capturing device.

The SPAN is mirroring source traffic on a single VEM host.  SPAN does not utilize the uplinks for traffic in this regard.  The amount of extra traffic in a SPAN/ERSPAN session is dictated by the source (vEth, Eth, Port Channel, Port Profile, entire VLAN etc.).  The destination for a SPAN session can be another vEthernet, Ethernet or Port Channel interface on that host.  Most customers setup a Wireshark VM, migrate it to whichever VEM host they want to run a SPAN on, and then just set their SPAN destination to the vEth port of the Wireshark VM.  Simple and free way to capture traffic.