speed duplex mis-match netvanta 150 connected to netvanta 7100

[Anonymous]

I have found that when I use a Netvanta 150 I sometimes get the following message:

2012.04.07 17:08:46 LLDP LLDP:  Speed Duplex mis-match on eth 0/21. Speed/Duplex: "100M/full-duplex"   Neighbor Speed/Duplex: "? duplex"

the message occurs every 5 seconds or so.

the equipment has been in service for a long time.

to solve the problem immediately I went into hte configuration of port 21 and entered in no LLDP send-and-receive

can you help explain why this is occuring?

thanks

[Anonymous]

@larryp - Thank you for your question. Based on the output you provided, it looks like the NetVanta 150 is not sending its speed and duplex information via LLDP to the NetVanta 7100. The cause of this needs further investigation.

I was hoping you could provide me with some additional information. Could you post the output to "show interface ethernet 0/21" and "show interface dot11ap <AP Interface Number>"? If you are not familiar with the CLI, this information can be pulled from the web interface. The information regarding port 21 can be viewed by navigating to Data -> Switch -> Ports from the panel on the left. Click on 'eth 0/21' and take note of what the 'speed/duplex' is set to. The information regarding the access point can be viewed by navigating to  Data -> Wireless -> APs/Radios/VAP from the panel on the left. Under "Access Point ID", click on the AP in question. Take note of what the 'speed/duplex' is set to.

Also, which firmware is the NetVanta 7100 currently running?

Please reply to this post with the information requested and we will be more than happy to help you. Please do not hesitate to let us know if you have any questions.

Thanks,

Noor

[Anonymous]

See below

Larry

[Anonymous]

Larry,

You provided the information below:

per your request,

show information regarding the 7100 interface:

show run int  eth 0/21 & show int eth 0/21

show run

interface eth 0/21

  description wireless AP - room

  spanning-tree edgeport

  no shutdown

  switchport mode trunk

  qos trust cos

  no lldp send-and-receive

!

end

show int eth 0/21

eth 0/21 is UP, line protocol is UP

  Description: wireless AP - room

  Hardware address is 00:A0:C8:80:92:01

  100Mb/s, negotiated full-duplex, configured full-duplex

  ARP type: ARPA; ARP timeout is 20 minutes

  5 minute input rate 1016 bits/sec, 0 packets/sec

  5 minute output rate 3704 bits/sec, 2 packets/sec

    Queueing method: fifo

    Output queue: 0/256/0 (size/max total/drops)

    Interface Shaper: NOT ENABLED

    13177785 packets input, 1495854931 bytes

    500633 unicasts, 13487 broadcasts, 80753 multicasts input

    0 unknown protocol, 0 symbol errors, 2094 discards

    0 input errors, 0 runts, 0 giants

    0 no buffer, 0 overruns, 0 internal receive errors

    0 alignment errors, 0 crc errors

    94525012 packets output, 1856246911 bytes

    4293286993 unicasts, 946662 broadcasts, 886813 multicasts output

    0 output errors, 0 deferred, 0 discards

    0 single, 0 multiple, 0 late collisions

    0 excessive collisions, 0 underruns

    0 internal transmit errors, 5 carrier sense errors

    0 resets, 0 throttles

show interface of the Netvanta 150

There are multiple NetVanta 150's on the 7100.  I am providig the information on the one that is not working correctly:

show int dot11ap 3
Dot11 AP 3 line protocol is UP
   Controller Status: Local AC in control
   Ap Version: FW: 1.0 0.B, DRVR: 1.0 0.0, HW: 1.0 0.0
   Ap S/N: LBADTN1037AK354
   AP MAC address: 00:A0:C8:65:82:73
   Radio1 - 802.11bg - Enabled, channel 0, address: 00:A0:C8:65:82:75
   Radio2 - 802.11a - Enabled, channel 0, address: 00:A0:C8:65:82:74
   Bootup Status: Normal
   Ap Status: With Session
   Controlling AC: 00:A0:C8:80:92:07
   802.1Q Encapsulation - Disabled
   Auto, Full Duplex

  Ethernet Statistics:
     Ethernet Rx Packets: 15178811
     Ethernet Rx Bytes: 1794315940
     Ethernet Tx Packets: 2997440
     Ethernet Tx Bytes: 277178417
ro1#show run int dot11ap 3
Building configuration...
!
!
interface dot11ap 3 ap-type nv150
   access-point mac-address 00:A0:C8:65:82:73
   name house-1
   location
   event-history on
   event-history priority 4
!
end

regarding the version of the 7100 software, it is

show ver

ADTRAN, Inc. OS version A4.08.00.E

  Mainline Version: M04

  Checksum: A6AFC59E

  Built on: Fri Jun 24 13:55:27 2011

  Upgrade key: d3d7c0219bc4b9f4f7798280d4d8b4ee

Hardware version 10A

Boot ROM version A2.06.B1

  Checksum: E213

  Built on: Thu Jun 17 10:50:21 2010

Copyright (c) 1999-2010, ADTRAN, Inc.

Platform: NetVanta 7100, part number 1200796E1

last question, speed / duplex, as indicated in show run, auto / full duplex

I hope that this helps.

as a side note, I have about a dozen 150s installed at various locations (this location has two).  out of the 12, there are 3 that have this behavor.

[Anonymous]

Larry,

From the information you provided, it appears that there is no speed or duplex mismatch. Could you re-enable LLDP on port 21 and turn on LLDP debug? The command to start the debug is "debug lldp". Please provide the output to this debug on this thread.

Thanks,

Noor

[Anonymous]

Noor,

Per your request, here is the debug… I took a few cycles, I also turned on verbose – looking at the data, it appears that the root cause of the message is a laptop that is connected to the Netvanta 150. 

Here is my analysis.

1.     Interface port 21 is connected to an access point (see show dot11 acc, show mac add int eth 0/21)

2.     Show mac address shows that there is the wifi hotspot connected (00:A0:C8:65:82:73) as well as two other devices

3.     LLDP says that the MAC address of the device responding on 0/21 is not the Adtran wireless router (see LLDP debug).  It appears to be one of the other devices (00:1E:4C:4F:E0:3C)

4.     Did a verbose debug – looks like it is a remote PC connected to the wireless access port 

Based upon the information that I gathered, it looks like the Netvanta 150 is not having a mismatch of speed but rather the PC that is connected over the wireless network side to the Netvanta.  That also explains my earlier statements about seeing this on more than one Netvanta 150.  I believe that my observations were correct, but there was a misunderstanding of the meaning of the Netvanta 7100 error message.  The problem was not with the device connected to port 21 but rather one of the wireless devices connected to the Netvanta 150.

So now here is the question, why is the Netvanta 7100 reacting to a speed mismatch when in fact there is none  (IE there is no speed mismatch with the Netvanta 150 and the device that is responding to the LLDP message is a PC that is transmitting it over the wireless connection). The response to the LLDP from the PC seems to make sense (LLDP:  Speed/Duplex: "? duplex" – see debug messages below).

Regards

Analysis follows:

Show dot11 acc

Wireless Access Points:

Name MAC-Address       AP Status Cfg'd  Control Status

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

house-2 00:A0:C8:3C:44:38 Session Y    Ctl_by_This_AC

house-1 00:A0:C8:65:82:73 Session Y    Ctl_by_This_AC

#show mac add int eth 0/21

          Mac Address Table

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

Vlan    Mac Address Type      Ports

---- ----------- ----      -----

1      00:1e:4c:4f:e0:3c DYNAMIC   eth 0/21

1      00:21:2a:02:09:f4   DYNAMIC eth 0/21

1      00:a0:c8:65:82:73 DYNAMIC   eth 0/21

Total Mac Addresses for this criterion: 3

Debug of LLDP (three sets mismatch message and debug statement)

2012.04.13 14:13:40 LLDP LLDP:  Speed Duplex mis-match on eth 0/21. Speed/Duplex: "100M/full-duplex"   Neighbor Speed/Duplex: "? duplex"

housero1#LLDP:  eth 0/21: RX LLDPDU from 00:1E:4C:4F:E0:3C len = 206

2012.04.13 14:13:41

LLDP:  Neighbor Port ID: port-001 on 2012.04.13 14:13:41

2012.04.13 14:13:41 LLDP LLDP:  Speed Duplex mis-match on eth 0/21. Speed/Duplex: "100M/full-duplex"   Neighbor Speed/Duplex: "? duplex"

LLDP:  eth 0/21: RX LLDPDU from 00:1E:4C:4F:E0:3C len = 206

2012.04.13 14:13:42

LLDP:  Neighbor Port ID: port-001 on 2012.04.13 14:13:42

2012.04.13 14:13:42 LLDP LLDP:  Speed Duplex mis-match on eth 0/21. Speed/Duplex: "100M/full-duplex"   Neighbor Speed/Duplex: "? duplex"

LLDP:  eth 0/18: TX LLDPDU on 2012.04.13 14:13:43

LLDP:  Next Update for eth 0/18 in 30 seconds

2012.04.13 14:13:43

LLDP:  eth 0/21: RX LLDPDU from 00:1E:4C:4F:E0:3C len = 206

2012.04.13 14:13:43

LLDP:  Neighbor Port ID: port-001 on 2012.04.13 14:13:43

Looks like another device on the network is responding.

2012.04.13 14:08:25 LLDP LLDP:  Speed Duplex mis-match on eth 0/21. Speed/Duplex: "100M/full-duplex"   Neighbor Speed/Duplex: "? duplex"

LLDP:  eth 0/21: RX LLDPDU from 00:1E:4C:4F:E0:3C len = 206

2012.04.13 14:08:26

LLDP:  Chassis ID (MAC Address) "00:1E:4C:4F:E0:3C"

2012.04.13 14:08:26

LLDP:  Port ID (Locally Assigned) "port-001"

2012.04.13 14:08:26

LLDP:  Neighbor Port ID: port-001 on 2012.04.13 14:08:26

LLDP:  TTL 20

2012.04.13 14:08:26

LLDP:  Port Description "Atheros AR5006X Wireless Network Adapter - Packet Scheduler Miniport"

2012.04.13 14:08:26

LLDP:  System Name "SIMATIC PC"

2012.04.13 14:08:26

LLDP:  System Description "SIEMENS AG SIMATIC PC + engineering"

2012.04.13 14:08:26

LLDP:  System Capabilities:

Station Only

       Enabled System Capabilities:

Station Only

2012.04.13 14:08:26

LLDP:  Management Address:

Type: "IP version 4"  Address: "0.0.0.0"

Interface Type: "Interface Index" Id: 1

OID: "721813764.25280622"

2012.04.13 14:08:26

LLDP:  Negotiation Status: "enabled"

LLDP:  Speed/Duplex: "? duplex"

2012.04.13 14:08:26

Larry

[Anonymous]

Larry,

Thank you for getting us that information. I apologize for the delay, but I am still looking into the issue here on my end. I'll have an answer for you by tomorrow COB at latest. Please do not hesitate to let us know if you have any further questions.

Thanks,

Noor

[Anonymous · Accepted solution]

Larry,

I have to agree with your assessment that it appears that there is a PC with a wireless NIC that is transmitting LLDP messages to the NetVanta 150 wirelessly.Since the connection is over wireless, it does not have a speed/duplex to report. The 7100 is receiving these messages and seeing that the PC is not reporting a speed and duplex, thus construing it as a duplex mismatch. I, personally, have not seen a PC transmit LLDP messages, especially over wireless. After discussing with Adtran Design Engineers, they would like the opportunity to look at this a bit deeper to determine if we are treating these LLDP messages as they should be treated. Please open a ticket with Adtran Technical Support so that we can open a case with our Design Engineering group to take a look at what you are experiencing.

You can open a ticket in several ways:

- Open a webticket by clicking on this link: Create a Service Request

- Open a ticket by emailing support@adtran.com

- Open a ticket by phone by calling 1-888-423-8726

Please be sure you reference this thread when opening the ticket so that the Tech Support Engineer knows where information can be referenced.

In the mean time, there are a couple of workarounds you can implement to stop the messages from coming up. First, as you mentioned, you can disable LLDP on the 7100. The other option is to disable LLDP on the wireless adapter on the PC.

Please do not hesitate to let us know if you have any further questions.

Thanks,

Noor

[Anonymous]

Thanks for the note… I will open a ticket.

Regarding disabling the reporting on the PC, I can’t find a way to disable the LLDP feature in the PC – already took a look…

It might be useful to publish that this happens….  It was driving me crazy for some time.  Because it was related to the laptop and it is reported via the 150, the problem appeared to move to different 150’s when in fact, it was actually related to my PC connecting through a specific 150.  Thus the comment about the problem with a one or two 150’s out of a dozen or so that I have installed.

Regards

Larry Pomatto

Director of Engineering

Systems Integrated

[Anonymous]

- I went ahead and flagged this post as “Assumed Answered.”  If any of the responses on this thread assisted you, please mark them as either Correct or Helpful answers with the applicable buttons.  This will make them visible and help other members of the community find solutions more easily.  If you still need assistance, I would be more than happy to continue working with you on this - just let me know in a reply.

Thanks,

Noor

[Anonymous]

:

I went ahead and flagged the "Correct Answer" on this post to make it more visible and help other members of the community find solutions more easily. If you don't feel like the answer I marked was correct, feel free to come back to this post and unmark it and select another in its place with the applicable buttons.  If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.

Thanks,

Levi