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VLAN internal allocation policy ascending/descending

Unanswered Question
May 1st, 2006
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When I configured some vlans below 1002 on my new 4900 switch I noticed a line in the config that reads "vlan internal allocation policy ascending" We only use vlans below 1005. Is this anything to worry about? Should I set the policy to descending?

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andrew.butterworth Mon, 05/01/2006 - 07:14
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Layer-3 Catalysts use VLAN id's internally for a few things, one of these is routed interfaces (no switchport). By default the internal allocation policy is ascending - that means it will use VLAN 1006 and upwards for internal usage. If you change this to descending it starts at 4094 and goes down.


HTH


Andy

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