LLDP Error on 6850

[jcremer]

New to the board. We have an OS6850-U24X that suddenly started sending this message to syslog:

"LLDP(42) Data: lldpProcessPortIdTLV: Port ID subtype 1 TLV has invalid len 68"

I'm new to the Alcatel series and found this board.

Software Version: 6.4.2.807.R01 GA, August 27, 2009.

Any help is greatly appreciated.

[one6f]

Hi,
a related issue can be seen here.
But that was even older SW as you have.
Maybe you will try to update to 6.4.3 or 6.4.4?

[jcremer]

Thanks. Currently it is connected to a Cisco switch. Also we are currently perfroming a "bug scrub" and reviewing upgrade options. So is this really a cosmetic error?

[one6f]

So it seems.
If you don't need LLDP, you can try to disable the flow of LLDPDU on the Cisco switch.
To disable LLDPDU on Alcatel:
-> lldp chassis lldpdu disable
-> lldp chassis notification disable
or on port:
-> lldp 1/5 lldpdu disable

[alcatel_f]

Every 5 min I have on Alcatel 6850 untaged interfaces 3 such packets:

Code: Select all

No.     Time        Source                Destination           Protocol Info
      1 0.000000    Alcatel-_e4:2d:5f     AlcatelN_00:70:04     LLC      U, func=UI; SNAP, OUI 0x0020DA (Unknown), PID 0x0003

Frame 1: 106 bytes on wire (848 bits), 106 bytes captured (848 bits)
IEEE 802.3 Ethernet 
Logical-Link Control
    DSAP: SNAP (0xaa)
    IG Bit: Individual
    SSAP: SNAP (0xaa)
    CR Bit: Command
    Control field: U, func=UI (0x03)
        000. 00.. = Command: Unnumbered Information (0x00)
        .... ..11 = Frame type: Unnumbered frame (0x03)
    Organization Code: Unknown (0x0020da)
    Protocol ID: 0x0003
Data (84 bytes)

0000  05 03 01 cc 0b 00 01 0c 00 d0 95 e4 2d 52 00 05   ............-R..
0010  0a 11 00 01 c0 a8 87 fd c0 a8 86 fd c0 a8 85 fd   ................
0020  5b d4 d6 19 76 78 54 61 72 67 65 74 00 00 00 00   [...vxTarget....
0030  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0040  00 00 00 00 22 00 00 00 00 00 00 00 00 00 00 00   ...."...........
0050  00 00 00 00                                       ....
    Data: 050301cc0b00010c00d095e42d5200050a110001c0a887fd...
    [Length: 84]

How to disable LLC on Alcatel 6850? What feature use LLC packets?

[one6f]

Hi alcatel_f,

I am not quite sure, I think, that what you have here is AMAP (Alcatel-Lucent Mapping Adjacency Protocol).
For example, in OmniVista links between AOS devices are automatically shown when the devices are added to a map if AMAP is enabled.
You can also view a list of adjacent AOS switches.
It's like CDP from Cisco, which is encapsulated as LLC/SNAP with an OUI of 0x00000C and a protocol ID of 0x2000 (by AOS are different of course).
But, I may be wrong...

To deactivate AMAP on the switch, enter the following command:
-> amap disable