topic Re: incorrect LLDP information on procurve 2524 in Switches, Hubs, and Modems

incorrect LLDP information on procurve 2524

Baudin Maxime — Mon, 16 Jun 2008 06:38:40 GMT

Hello,
While trying to create a network map, I found that lldp infos on procurve 2524 are wrong.

Lots of my 2524 are connected to 4108 or 4104 switchs and a 'sh lldp info remote device' tells me that 2524 is connected to 4108 on port number 184....instead of H16.

I don't have this problem with other switchs (2650, 2824, 2510).

All switchs have been upgraded with last firmware available.

This issue is for every 2524 switch on my network.

Did I miis an option ? I this a bug ?

Regards,
Maxime

Re: incorrect LLDP information on procurve 2524

cenk sasmaztin — Mon, 16 Jun 2008 08:41:57 GMT

hi Maxime
this is not bug bucause
2524 and 2512 only transmit lldp not recieve lldp packet

please look feature for 2500 switch family
you see not support lldp protocol on switch

http://www.hp.com/rnd/products/switches
/switch2524-2512/features.htm

and please read this guide page 8
http://cdn.procurve.com/training/Manuals/2300-2500-RelNotes-F0565-59903102.pdf
this switch only for procurve manager support lldp

cenk

Re: incorrect LLDP information on procurve 2524

Baudin Maxime — Mon, 16 Jun 2008 09:28:35 GMT

Thanks for your answer.

The documentation says :

"With version F.05.60, LLDP advertisements from remote neighbor devices can be received. Use the
show lldp info remote-device command to display information received from LLDP remote devices."

So it's working, but the information is incorrect.

Maxime

Re: incorrect LLDP information on procurve 2524

cenk sasmaztin — Mon, 16 Jun 2008 10:44:56 GMT

please read page 8 note:
Note
Selected LLDP information (such as system name, port description, port type, chassis type) received
by a Series 2500 switch from a remote neighbor is not viewable.

because connect now my costumer site for you and test 4200 switch on lldp command and I see all 2524 -2512 switch lldp info

my costumer 2524 switch frimware F.05.61

please check commnad

#sh lldp info remote-device

and trun around your 2524 switch frimware F_05_61
please retest

cenk

cenk

Re: incorrect LLDP information on procurve 2524

Baudin Maxime — Mon, 16 Jun 2008 13:19:21 GMT

I didn't said that lldp info wasn't here, I said that lldp information was wrong on 2524 side and right on 4108 side.

from 2524 (in 5_65 firmware version) :

LLDP Remote Device Information

LocalPort | ChassisId PortId PortDescr SysName
--------- + ------------------------- ------ --------- ----------------------
24 | 0001e7-cac900 184

look at the "PortId" : 184 !! which is not possible, there is no such port on a 4108 switch, the real port is : H16 (it's the 184'th port on the 4108 but it should appears as H16 and not 184).

here is the info on 4108 side :

sh lldp info remote-device :

H16 | 00 08 83 96 d8 80 24 24 swcopsm2

which is the right info.

And all my 2524 (with 5_65 firmware) give me wrong lldp informations.

Re: incorrect LLDP information on procurve 2524

cenk sasmaztin — Mon, 16 Jun 2008 14:57:32 GMT

hi Maxime
each info true

because port number H16 port id 184
port id number not switch port number ,port id number on backplane port number
A24+B24+C24+D24+E24+F24+G24+H16= <184>

2524 switch see sum port number other all chassis switch very normal.

cenk

Re: incorrect LLDP information on procurve 2524

Matt Hobbs — Tue, 17 Jun 2008 03:53:39 GMT

Maxime,

You've discovered a definite bug. The bug is the PortDescr and SysName is missing.

The PortId is correct (184), but you should also get a friendly name such as H16 (PortDescr).

You should open a case with HP Support and report this.

Matt

HP ProCurve Switch 2524# show lldp info remote-device

LLDP Remote Device Information

LocalPort | ChassisId PortId PortDescr SysName
--------- + ------------------------- ------ --------- ----------------------
24 | 0014c2-10dbc0 11
25 | 001185-d05780 46
26 | 0001e7-5f1100 26

Re: incorrect LLDP information on procurve 2524

Baudin Maxime — Tue, 17 Jun 2008 06:38:54 GMT

Thanks, I understand more clearly now.

I'll contact HP support.

regards,
Maxime

Re: incorrect LLDP information on procurve 2524

Richard Brodie_1 — Tue, 17 Jun 2008 10:04:35 GMT

The LLDP support in the 2500 is limited;
it's an old model, and has smaller flash memory than the others. There probably wasn't room to fit the full LLDP code in. You may just have to live with it, unfortunately.

"Selected LLDP information (such as system name, port description, port type, chassis type) received by a Series 2500 switch from a remote neighbor is not viewable."

Re: incorrect LLDP information on procurve 2524

Matt Hobbs — Tue, 17 Jun 2008 11:23:05 GMT

Nice one Richard.

It is not a bug after all, it is expected behaviour as per the release notes - http://cdn.procurve.com/training/Manuals/2300-2500-RelNotes-F0565-59903102.pdf

Maybe you can try 'show cdp n d' instead as it is cross populated with the LLDP information.

Re: incorrect LLDP information on procurve 2524

cenk sasmaztin — Wed, 18 Jun 2008 05:27:54 GMT

I read in this guide

Enhancements in Release F.05.05 through F.05.65
Implementation of LLDP
Viewing LLDP-detected Devices
Note
Selected LLDP information (such as system name, port description, port type, chassis type) received
by a Series 2500 switch from a remote neighbor is not viewable.
With version F.05.60, LLDP advertisements from remote neighbor devices can be received. Use the
show lldp info remote-device command to display information received from LLDP remote devices.
For example, show lldp info remote-device produces the following display when LLDP is enabled and
a device is detected:
Figure 2. Example of Viewing the LLDP Remote Device List
Syntax show lldp info remote-device [ < local port > ]
Displays LLDP Remote Device Information.
: If the local port number connected to the remote
device is specified, additional details of the remote device are
displayed.
HP ProCurve Switch 2524# show lldp info remote-device
LLDP Remote Device Information
Local Port | Chassis Id Port Id Port Descr SysName
---------- + ------------------ ------- ---------- ---------
1 | 0030c1-7fec40 5
HP ProCurve Switch 2524#

Re: incorrect LLDP information on procurve 2524

cenk sasmaztin — Wed, 18 Jun 2008 05:34:51 GMT

please you read be carefully lldp info part

http://cdn.procurve.com/training/Manuals/2300-2500-RelNotes-F0565-59903102.pdf