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[ScreenOS] Does NS-5GT Support 802.1q VLAN tagged Subinterfaces?

  [KB15560] Show Article Properties


Summary:
This article provides information about the possibility of NetScreen-5GT supporting 802.1q VLAN tagged subinterfaces.
Symptoms:
Environment:

  • 802.1q VLAN Tagging

  • Sub-interface

  • NetScreen-5GT
Cause:

Solution:
NetScreen-5GT supports 802.1q tagged sub-interfaces, beginning with ScreenOS 5.3.0; but only if the device is in the trust-untrust port mode. If the NetScreen-5GT device is in any other port mode, 802.1q VLAN tagging will not available.

To switch to the trust-untrust port mode, refer to KB6117 - How to check or change the operation port mode on the NetScreen-5XT or 5GT.
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