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    Monitoring the Status of MAC Address Validation on Physical Interfaces

    Purpose

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

    Action

    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

    Meaning

    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

    Published: 2014-08-14