Description

When attempting to commit a configuration, the following message appears:

DHCP trusted configuration cannot be specified on a Dot1q tunneled interface

The commit fails. This article explains that unsupported configurations will not be committed.

Symptoms

While committing a new configuration, the mentioned message comes up. The system will not commit the configuration. This issue is seen on the EX 4200 and 4500 running Junos OS 12.3R6.6 and 13.2X50-19.2.

Configuration Part:

interfaces {
    ae1 {
        unit 0 {
            family ethernet-switching {
                port-mode trunk;
                vlan {
                    members all;
                }
            }
        }
    }
}

ethernet-switching-options {
    dot1q-tunneling {
        ether-type 0x8100;
    }

    secure-access-port {
        interface ae1.0 {
            dhcp-trusted;
        }
    }
}

vlans {
    sv2001 {
        vlan-id 2001;
        dot1q-tunneling;
    }
}

set ethernet-switching-options secure-access-port interface ae1.0 no-dhcp-trusted

Unable to commit the above configuration.

Output:

[edit]
root@lab1# commit check

[edit ethernet-switching-options secure-access-port]
'interface ae1.0' <<<< Commit error
DHCP trusted can not be specified on a Dot1q tunneled interface
error: configuration check-out failed

Solution

Configuration not supported.


The following are not supported on a dot1q-tunnel VLAN interface:


Any configuration using these techniques will not be committed and will generate a configuration check error.