Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation
Guide That Contains This Content
[+] Expand All
[-] Collapse All

    allowed-mac

    Syntax

    allowed-mac mac-address-list

    Hierarchy Level

    Release Information

    Statement introduced in Junos OS Release 11.1 for the QFX Series.

    Description

    Specify particular MAC addresses to be added to the MAC address cache.

    Note: Although this configuration restricts the addresses that can be added to the MAC address cache, it does not block the switch from receiving Layer 2 control packets—such as Link Layer Discovery Protocol (LLDP) packets—transmitted from MAC addresses that are not specified in the list of allowed MAC addresses. Control packets do not undergo the MAC address check, and they are therefore included in the statistics of packets received, though, they are not forwarded to another destination.

    Default

    Allowed MAC addresses take precedence over dynamic MAC values. For example, if the mac-limit statement is set to four and three allowed MACs are configured, only one dynamic MAC can be learned on that interface.

    Options

    mac-address-list—One or more MAC addresses configured as allowed MAC addresses for a specified interface or all interfaces.

    Required Privilege Level

    routing—To view this statement in the configuration.
    routing–control—To add this statement to the configuration.

    Modified: 2017-12-20