Dynamic VLAN (vmps)

Unanswered Question
Jul 16th, 2007
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I see a lot of 'vmps request' in my log. Why do the appear ?


Cisco Internetwork Operating System Software

IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA10, RELEASE SOFTWARE (fc2)

Copyright (c) 1986-2007 by cisco Systems, Inc.

Compiled Tue 08-May-07 11:50 by myl

Image text-base: 0x80010000, data-base: 0x8056C000


VQP Client Status:

--------------------

VMPS VQP Version: 1

Reconfirm Interval: 60 min

Server Retry Count: 3

VMPS domain server: 172.16.13.146 (primary, current)


Reconfirmation status

---------------------

VMPS Action: Success


VMPS Client Statistics

----------------------

VQP Queries: 18

VQP Responses: 18

VMPS Changes: 0

VQP Shutdowns: 0

VQP Denied: 0

VQP Wrong Domain: 0

VQP Wrong Version: 0

VQP Insufficient Resource: 0


part of 'show log':


07:07:12: %VQPCLIENT-7-RECONF: Reconfirming VMPS responses

07:11:32: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:12:46: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

......

07:42:02: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:44:18: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:46:48: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:46:48: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:48:55: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:51:32: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:52:24: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:54:03: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:54:04: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:54:47: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:55:31: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:56:07: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:57:03: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:58:36: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

07:59:04: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

08:00:02: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

08:00:32: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

08:01:32: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

08:03:09: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

08:04:27: Calhoun VQPC-calhoun_vqpc_learn_new: port 1, MAC 000b.cde3.855f, Vlan1

08:07:13: %VQPCLIENT-7-RECONF: Reconfirming VMPS responses



Does anyone know how to solve this ?



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Anonymous (not verified) Mon, 07/23/2007 - 10:14
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I think with the VMPS, you can dynamically assign switch ports to VLANs based on the source Media Access Control (MAC) address of the device connected to the port. When a loss of connectivity occurs between a VMPS client and a VMPS, the VMPS reconfirmation can fail and produce the DVLAN-2-MACNOTRECONFIRMED error message.


For more information on Dynamic VLAN (vmps) please clicks following URL:


http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a00800c4548.shtml#topic1-3

huitiko123 Mon, 07/23/2007 - 23:35
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Tanks for your answer...I know the document you sent me...BUT:


I don't get the DVLAN-2-MACNOTRECONFIRMED error message. The VMPS client can find the VMPS server ! I do see messages like:


01:00:54: VQPC PAK: xmt transaction ID = 0x00000005

01:00:54: VQPC PAK: sending query to VMPS

01:00:54: VQPC PAK:

01:00:54: VQPC PAK: rcvd packet from VMPS

01:00:54: VQPC PAK: transaction ID = 0x00000005

01:00:54: VQPC: rcvd response, transID = 0x00000005

01:00:54: VQPC PAK: VLAN name TLV, vlanName = default

01:00:54: VQPC PAK: Cookie TLV, cookie = 000b.cde3.855f, length = 6


Why do they appear ?


HELP !!

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