Technical Documentation

Monitoring the Status of MAC Address Validation on Physical Interfaces

Displays the status of the MAC address validation on the physical interface.

To display the status of the MAC address validation on the physical interface:

host1:boston#show ip mac-validate interface fastEthernet 11/0 
FastEthernet11/0:  Strict

         Address     Hardware Addr
         3.3.3.3     0090.1a30.3365
         4.4.4.4     0090.1a30.3368

Table 1 lists the show ip mac-validate interface fastEthernet command output fields.

Table 1: show ip mac-validate interface fastEthernet Output Fields

Field Name	Field Description
FastEthernet interfaceSpecifier	On the ERX14xx models, ERX7xx models, and ERX310 router, the Fast Ethernet or Gigabit Ethernet interface is of the format:slot/port; on the E120 and E320 routers, the Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet interface is of the format: slot/adapter/port
Keyword assigned to interface	Type of MAC address validation configured on the interface. Possible values are: Strict—Prevents transmission of IP packets • that do not reside in the validation table Loose—Allows IP packets to pass through even though the packets do not have entries in the validation table; only packets that have matching IP–MAC pair entries in the table are validated; this is the default setting
Address	IP address of the entry
Hardware Addr	Physical (MAC) address of the entry