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[ScreenOS] VLAN tag greyed out for aggregate interface



Article ID: KB27060 KB Last Updated: 12 Sep 2013Version: 2.0

This article explains the situation where the VLAN tag is greyed out when creating a sub-interface for an aggregate interface


User has created an aggregate interface, but when the user tries to create a sub-interface for aggregate1, the VLAN tag option is greyed out

CLI does not show tag option:


No physical interface is a member of aggregate1.


Firewall will prohibit creation of sub-interfaces for an aggregate interface unless a physical interface is its member. Once the aggregate interface has members, the VLAN tag can be provided.

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