PsychoFelix:
I'm wanting a explanation from someone that understands the question and can explain it in layman's terms, not a Google search explanation that you provided(http://www.veloci
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What is "vlan internal allocation policy"? What is it used for and how does it work?
I have a Cisco 3750 switch, when I do a show run I see "vlan internal allocation policy" in the config, can someone tell me what this is and how it works?
Thank you,
DSterling
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Answers
my understanding of the question is EXACTLY as posted..
Internal VLAN allocation is purely a command to specify whether the internal policy allocates numbered vlans from :
1006 to 4094 (ascending)
4094 to 1006 (descending)
internal vlans are features that require to be loaded from the startup config on boot.
internal vlans and user configured vlans can share the same space (1006->4094), but are allocated on a first come first served basis.. therefore, if you are allocating vlan names in the 1006+ range, then you should set your internal vlan allocation policy to descending so that your vlans arent renumbered because by default the vlan allocation policy is ascending and will start allocating from 1094+
show vlan internal usage - will show you what you currently have allocated (if anything)
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by: PsychoFelixPosted on 2008-09-17 at 04:57:03ID: 22497446
> vlan internal allocation policy ascending
It configures the Internal Vlan allocation policy. You can choose between "ascending" and "descending".
Enter the ascending keyword to allocate internal VLANs from 1006 and up.
Enter the descending keyword to allocate internal VLAN from 4094 and down.
1006-4094 - this is extended range of etherenet-only vlans, they are not propagated by vtp protocol.