FDB Information
  
  
    
      To view FDB (forwarding database) entries, use the following
        command:
      show fdb netlogin [all | mac-based-vlans]
      By specifying netlogin, you see only FDB entries related to network
        login or network login MAC-based VLANs.
      The flags associated with network login include:
          - v—Indicates the FDB entry was added because the port is part of a MAC-Based virtual
            port/VLAN combination
- n—Indicates the FDB entry was added by network login