View Remote Network Monitoring (RMON) settings to see the maps of network layer address to physical address to interface.
show rmon address-map
None
User EXEC
The show rmon address-map command displays the following information:
| 
                         Output field  | 
                     
                         Description  | 
                  
|---|---|
| 
                         PROTOIDX  | 
                     
                         Shows a unique identifier for the entry in the table.  | 
                  
| 
                         HOSTADDR  | 
                     
                         Shows the network address for this entry. The format of the value depends on the protocol portion of the local index.  | 
                  
| 
                         SOURCE  | 
                     
                         Shows the interface or port on which the network address was most recently seen.  | 
                  
| 
                         PHYADDR  | 
                     
                         Shows the physical address on which the network address was most recently seen.  | 
                  
| 
                         LASTCHANGE  | 
                     
                         Shows when the entry was created or last changed. If this value changes frequently, it can indicate duplicate address problems.  | 
                  
The following example displays the RMON address map table on the switch.
Switch:1(config)#show rmon address-map
========================================================================
                             Rmon Address Map Table
========================================================================
PROTOIDX  HOSTADDR         SOURCE  PHYADDR            LASTCHANGE
------------------------------------------------------------------------
1         192.0.2.11        3     b0:ad:aa:42:a5:03  05/04/21 08:20:13