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Author Topic: Flowcontrol between ERS8610 and HP-GbE2c  (Read 5604 times)

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Offline udobock

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Flowcontrol between ERS8610 and HP-GbE2c
« on: July 22, 2013, 08:35:14 AM »
I hope this is the right category. If it is wrong, please move

Hi,

we have 9 HP-Blade-Enclosure that are connected to the Network with LACP like this:

http://blog.michaelfmcnamara.com/2009/08/lacp-configuration-examples-part-3/

Everthing works fine, but then we have a problem to get a SMLT to a ERS5650 up.

In Log We found this :

KHI WARNING Slot 1 Middle Lane is experiencing F2X Errors - F2E Packet Parity Error
KHI WARNING Slot 2 Middle Lane is experiencing F2X Errors - F2E Packet Parity Error
KHI WARNING Slot 2 Left Lane is experiencing F2X Errors - F2E Packet Parity Error
KHI INFO Slot 1 Right Lane is experiencing F2X Errors - FOQ Drops
KHI INFO Slot 7 Middle Lane is experiencing F2X Errors - FOQ Drops

We open a Ticket by Avaya.
We change a 8612LXR5-Card (two times), Gbic and Chassis. Nothing helps.

After some time, CPU-Switch-Over happens because the utilization was to high.
This happens 4 times.

After we change both 8692CPU the SMLT came up. But the Message in the Log still there.

By seeking the reason of the utilization, we find out the uplinks to the GbE2c L2/L3 switches have many Flowcontrol Packets.

The Avaya-Support give us the advice to upgrade the ERS8610 from 7.1.5.0 to 7.2.1.1

After we update the Software on the GbE2c L2/L3 switches to 5.2.8 and Update the ERS8610 to 7.2.1.1 the Flowcontrol-counter is still high.

For example 12 hours after Update :

ERS8610-A:5# show ports stats interface main
*******************************************************************************
Command Execution Time: FRI JUL 19 06:20:50 2013 UTC
*******************************************************************************

================================================================================
                              Port Stats Interface
================================================================================
PORT     IN         OUT        IN        OUT         IN        OUT     OUTLOSS
NUM    OCTETS     OCTETS     PACKET     PACKET     FLOWCTRL  FLOWCTRL  PACKETS
--------------------------------------------------------------------------------
.
.
1/21   6384322326 11589742822 13822287   25269748   8         0         0
1/22   37882864114 33979242093 61443551   59794816   43012     0         0
1/23   38006805800 17827303556 54790914   49986306   0         0         0
1/24   69388678634 12620484369 56030628   40286242   0         0         0
1/25   24687896793 12143596838 26896460   17059515   252       0         0
1/26   37776430721 31093905518 82327123   27601283   234088    0         0
1/27   16987620513 1753648705 14401478   9497239    0         0         0
1/28   2463502562 2924640905 3245113    7334611    0         0         0
.
.
2/21   420796485  1407852681 894799     4948448    0         0         0
2/22   18516402234 60405049008 54307245   109292637  4         0         0
2/23   36339831852 23223039581 37220340   53067400   818       0         0
2/24   986383121  592019439  1719264    4418640    0         0         0
2/25   21716534099 1292371565 50132179   5917312    178       0         0
2/26   16055731879 26653607081 35900850   45234755   42        0         0
2/27   76199870415 2825151976 66139723   8465915    16        0         0
2/28   24522322623 29096306065 26583797   43220242   5684      0         0
.
.

ERS8610-B:6# show ports stats interface main
*******************************************************************************
Command Execution Time: FRI JUL 19 06:25:03 2013 UTC
*******************************************************************************

================================================================================
                              Port Stats Interface
================================================================================
PORT     IN         OUT        IN        OUT         IN        OUT     OUTLOSS
NUM    OCTETS     OCTETS     PACKET     PACKET     FLOWCTRL  FLOWCTRL  PACKETS
--------------------------------------------------------------------------------
.
.
1/21   38771087451 6993095906 37577099   24420736   8         0         0
1/22   20584886352 14527097255 21182005   25293777   47016     0         0
1/23   7822355948 2632156961 8103377    7919651    0         0         0
1/24   23091636924 11394371746 39895830   44559353   18        0         0
1/25   14051566518 7882202020 16616388   25530004   96        0         0
1/26   240917272312 229998214404 179494772  199513487  281382    0         0
1/27   3698726213 2623204030 5930938    12100725   0         0         0
1/28   1546329424 2198361627 4885259    7759652    0         0         0
.
.
2/21   1281827878 1383960818 1562233    5059299    0         0         0
2/22   46774098308 38925936991 123079056  91156798   6         0         0
2/23   45061818820 7284819307 46300692   19819104   1114      0         0
2/24   710523792  1233748103 1212509    4297961    0         0         0
2/25   524786573  63596022629 1591817    63652881   504       0         0
2/26   3575932629 4150712326 21367081   24294370   14        0         0
2/27   15544662776 16929631006 19490126   49660764   48        0         0
2/28   30556230199 11819532229 37097385   22746499   7472      0         0
.
.

In Log the are still Messages like this:

KHI INFO Slot 1 Right Lane is experiencing F2X Errors - FOQ Drops

What can I do to reduce the Flowcontrol Packets?
I think there ist a connection between the high Utilization and the Flowcontrol Packets.

Regards

Udo


Offline Michael McNamara

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Re: Flowcontrol between ERS8610 and HP-GbE2c
« Reply #1 on: July 22, 2013, 10:08:29 PM »
Are you sure you don't have a loop in there... looks like that to me at first glance.
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Offline udobock

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Re: Flowcontrol between ERS8610 and HP-GbE2c
« Reply #2 on: July 23, 2013, 02:18:28 AM »
Are you sure you don't have a loop in there... looks like that to me at first glance.

Thanks for reply.
Very sure.

Offline caxinas

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Re: Flowcontrol between ERS8610 and HP-GbE2c
« Reply #3 on: September 21, 2016, 11:27:13 AM »
Hi Udobock,
How did you solved this problem?
Actually i have a similiar problem, im having "KHI INFO Slot 7 Middle Lane is experiencing F2X Errors - Fabric Drops", and approximately, 12h on 12h i have "CPU WARNING Shutting down port 3/10 due to excessive control frames multicast 0, broadcast 12497 packet per second".
Everything points to a loop, but the strange is the 12h periodicity.

Can you help me?

Offline udobock

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Re: Flowcontrol between ERS8610 and HP-GbE2c
« Reply #4 on: September 23, 2016, 03:30:08 AM »
Hi caximas,

the Problem is not at the Avaya Side.

The HP-Support give us the advice to disable Flowcontrol on the HP-Switch (all Ports!).

After that, everthing is fine.

Regards

Udo