Support Support Downloads Knowledge Base Case Manager My Juniper Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

'Interface-mode access' is currently not supported on the Trio chipset

0

0

Article ID: KB26970 KB Last Updated: 06 Mar 2013Version: 1.0
Summary:
This article describes the issue of the configuration of a logical interface to accept untagged packets with interface-mode access not being valid for Trio MPCs or MICs.
Symptoms:
Unable to pass traffic on a VLAN access interface with the Trio chipset. Similar messages, such as the following message, are noticed:
root@mx80a# Jan 7 07:27:52 mx80a tfeb0 l2pd_modify_inbound_vlan_tags: vtag is NULL before modify packet
Cause:
The configuration of a logical interface to accept untagged packets with the interface-mode access is not valid for Trio MPCs or MICs.

Which product platforms use the Junos Trio chipset?

  • MX 3D MPC line cards

  • 16 port 10-Gigabit Ethernet MPC

  • MX80 (standalone chassis)
Solution:
Changing the configuration of the access interface will get the access port to work. The current configuration is as follows:

Interface:
ge-1/1/0 {
    unit 0 {
        family bridge {
            interface-mode access;
            vlan-id 999;
Bridge-domain:
vlan-999 {
    domain-type bridge;
    vlan-id 999;
    routing-interface irb.999;
You will have to change the configuration as follows:

Interface:
ge-1/1/0 {
    encapsulation ethernet-bridge
    unit 0 {
        family bridge
Bridge-domain:
vlan-999 {
    domain-type bridge;
    vlan-id 999;
    interface ge-1/1/0.0
    routing-interface irb.999;
Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search