FreeBSD 9.1 ix driver vlan problem

Daniel Kalchev daniel at
Wed Sep 25 08:33:07 UTC 2013

On 25.09.2013, at 02:16, Rumen Telbizov <telbizov at> wrote:

> Example:
> ifconfig vlan200 create  # this is OK
> ifconfig vlan200 inet  vlan 200 vlandev ix1 description DEBUG #
> this second line makes the rest of the vlans freeze for 6-7 seconds
> On the switch side (Juniper) the physical interface flaps. There's nothing
> in logs/dmesg.

Might be, you have spanning tree enabled on the switch port and when the interface "flaps" it needs time to converge. Disable spanning tree on the port and the reset will be very short.


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