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Old 10-15-2011, 11:09 AM
Benjamin
 
Default getting packet dropperd on interface

Hi All,

In one of my server , i can see packet dropped on interface in ifconfig
command.

I tried to find root cause of it, but nothing get any clue.

What could be the reason behind packet dropped occured.


ifconfig
em1 Link encap:Ethernet HWaddr 00:25:90:39:70:0C
inet addr:XX.XX.16.19 Bcast:XX.XX.16.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:fe39:700c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4613769 errors:0 dropped:106342 overruns:0 frame:0
TX packets:3238374 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1699839073 (1.5 GiB) TX bytes:1686919974 (1.5 GiB)
Interrupt:16 Memory:fb3e0000-fb400000



OS : FEDORA 15 64 BIT


LAN INTERFACE IS ONBOARD GIGABIT LAN CARD.

Regards,
Benjamin
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Old 10-15-2011, 11:11 AM
Reindl Harald
 
Default getting packet dropperd on interface

Am 15.10.2011 13:09, schrieb Benjamin:
> OS : FEDORA 15 64 BIT
> LAN INTERFACE IS ONBOARD GIGABIT LAN CARD

this is no information

WHAT network-card is on the board?
lspci is your friend!




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Old 10-15-2011, 11:17 AM
Benjamin
 
Default getting packet dropperd on interface

Hi,

lspci -v



05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network
Connection
Subsystem: Super Micro Computer Inc Device 040d
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at fb5e0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at dc00 [size=32]
Memory at fb5dc000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [e0] Express Endpoint, MSI 00
Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-25-90-ff-ff-39-70-0e
Kernel driver in use: e1000e
Kernel modules: e1000e


Thanks,
Benjamin



On 10/15/2011 04:41 PM, Reindl Harald wrote:
> Am 15.10.2011 13:09, schrieb Benjamin:
>> OS : FEDORA 15 64 BIT
>> LAN INTERFACE IS ONBOARD GIGABIT LAN CARD
> this is no information
>
> WHAT network-card is on the board?
> lspci is your friend!
>
>
>
>

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Old 10-15-2011, 12:41 PM
Soham Chakraborty
 
Default getting packet dropperd on interface

What does ethtool -g em1 say? A very common reason of dropping packets is that the rx and tx buffers have been full. In this case, you can increase the count with ethtool -G switch and check again.
-- Soham


On Sat, Oct 15, 2011 at 4:47 PM, Benjamin <benjo11111@gmail.com> wrote:

*Hi,



lspci -v







05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network

Connection

* * Subsystem: Super Micro Computer Inc Device 040d

* * Flags: bus master, fast devsel, latency 0, IRQ 18

* * Memory at fb5e0000 (32-bit, non-prefetchable) [size=128K]

* * I/O ports at dc00 [size=32]

* * Memory at fb5dc000 (32-bit, non-prefetchable) [size=16K]

* * Capabilities: [c8] Power Management version 2

* * Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+

* * Capabilities: [e0] Express Endpoint, MSI 00

* * Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-

* * Capabilities: [100] Advanced Error Reporting

* * Capabilities: [140] Device Serial Number 00-25-90-ff-ff-39-70-0e

* * Kernel driver in use: e1000e

* * Kernel modules: e1000e





Thanks,

Benjamin







On 10/15/2011 04:41 PM, Reindl Harald wrote:

> Am 15.10.2011 13:09, schrieb Benjamin:

>> OS : FEDORA 15 64 BIT

>> LAN INTERFACE IS ONBOARD GIGABIT LAN CARD

> this is no information

>

> WHAT network-card is on the board?

> lspci is your friend!

>

>

>

>



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Old 10-16-2011, 05:14 AM
Benjamin
 
Default getting packet dropperd on interface

Hi,



my output of command :



ethtool -g em1



Ring parameters for em1:

Pre-set maximums:

RX:*** *** 4096

RX Mini:*** 0

RX Jumbo:*** 0

TX:*** *** 4096



Current hardware settings:

RX:*** *** 1024

RX Mini:*** 0

RX Jumbo:*** 0

TX:*** *** 1024



before current value for RX and TX are 256 and i increased it by
1024 for both RX and TX. But still we having packet loss on
interface.



How to verify that buffer full for RX and TX?



Regards,

Benjo







What does ethtool -g em1 say? A very common reason of
dropping packets is that the rx and tx buffers have been full. In
this case, you can increase the count with ethtool -G switch and
check again.



-- Soham



On Sat, Oct 15, 2011 at 4:47 PM,
Benjamin <benjo11111@gmail.com>
wrote:

*Hi,



lspci -v







05:00.0 Ethernet controller: Intel Corporation 82574L
Gigabit Network

Connection

* * Subsystem: Super Micro Computer Inc Device 040d

* * Flags: bus master, fast devsel, latency 0, IRQ 18

* * Memory at fb5e0000 (32-bit, non-prefetchable)
[size=128K]

* * I/O ports at dc00 [size=32]

* * Memory at fb5dc000 (32-bit, non-prefetchable) [size=16K]

* * Capabilities: [c8] Power Management version 2

* * Capabilities: [d0] MSI: Enable- Count=1/1 Maskable-
64bit+

* * Capabilities: [e0] Express Endpoint, MSI 00

* * Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-

* * Capabilities: [100] Advanced Error Reporting

* * Capabilities: [140] Device Serial Number
00-25-90-ff-ff-39-70-0e

* * Kernel driver in use: e1000e

* * Kernel modules: e1000e





Thanks,

Benjamin







On 10/15/2011 04:41 PM, Reindl Harald wrote:

> Am 15.10.2011 13:09, schrieb Benjamin:

>> OS : FEDORA 15 64 BIT

>> LAN INTERFACE IS ONBOARD GIGABIT LAN CARD


> this is no information

>

> WHAT network-card is on the board?

> lspci is your friend!


>

>

>

>



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Old 10-16-2011, 08:39 AM
agraham
 
Default getting packet dropperd on interface

Benjamin,

Can you also include the network statistics, it may helpful to know
exactly what type of errors these are:

ethtool -S em1

Are you in a position to change the cable?

I see this is a Supermicro, does the machine have a IPMI card using the
same IP address by any chance ?

Albert.

On 10/16/2011 06:14 AM, Benjamin wrote:
> Hi,
>
> my output of command :
>
> ethtool -g em1
>
> Ring parameters for em1:
> Pre-set maximums:
> RX: 4096
> RX Mini: 0
> RX Jumbo: 0
> TX: 4096
>
> Current hardware settings:
> RX: 1024
> RX Mini: 0
> RX Jumbo: 0
> TX: 1024
>
> before current value for RX and TX are 256 and i increased it by 1024
> for both RX and TX. But still we having packet loss on interface.
>
> How to verify that buffer full for RX and TX?
>
> Regards,
> Benjo
>
>
>
>> What does ethtool -g em1 say? A very common reason of dropping packets
>> is that the rx and tx buffers have been full. In this case, you can
>> increase the count with ethtool -G switch and check again.
>>
>> -- Soham
>>
>> On Sat, Oct 15, 2011 at 4:47 PM, Benjamin <benjo11111@gmail.com
>> <mailto:benjo11111@gmail.com>> wrote:
>>
>> Hi,
>>
>> lspci -v
>>
>>
>>
>> 05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network
>> Connection
>> Subsystem: Super Micro Computer Inc Device 040d
>> Flags: bus master, fast devsel, latency 0, IRQ 18
>> Memory at fb5e0000 (32-bit, non-prefetchable) [size=128K]
>> I/O ports at dc00 [size=32]
>> Memory at fb5dc000 (32-bit, non-prefetchable) [size=16K]
>> Capabilities: [c8] Power Management version 2
>> Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
>> Capabilities: [e0] Express Endpoint, MSI 00
>> Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
>> Capabilities: [100] Advanced Error Reporting
>> Capabilities: [140] Device Serial Number 00-25-90-ff-ff-39-70-0e
>> Kernel driver in use: e1000e
>> Kernel modules: e1000e
>>
>>
>> Thanks,
>> Benjamin
>>
>>
>>
>> On 10/15/2011 04:41 PM, Reindl Harald wrote:
>> > Am 15.10.2011 13:09, schrieb Benjamin:
>> >> OS : FEDORA 15 64 BIT
>> >> LAN INTERFACE IS ONBOARD GIGABIT LAN CARD
>> > this is no information
>> >
>> > WHAT network-card is on the board?
>> > lspci is your friend!
>> >
>> >
>> >
>> >
>>
>> --
>> users mailing list
>> users@lists.fedoraproject.org <mailto:users@lists.fedoraproject.org>
>> To unsubscribe or change subscription options:
>> https://admin.fedoraproject.org/mailman/listinfo/users
>> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>>
>>
>

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I had no trouble with panics booting new CR kernel either, but detecting =

my PCI-e parallel port =

http://www.spinics.net/lists/centos/msg119673.html. The worst is nobody =

has given even any clue related to it. Maybe this is the difference =

between RHEL and CentOS. If I was a RHEL licensed user, RedHat support =

staff at least would answer saying anything.


El 16/10/11 03:45, Jim Wildman escribi=F3:
> Particularly important to file bugs against CR releases since
> CR users are functioning as pseudo QA people..
>
> On Sat, 15 Oct 2011, Digimer wrote:
>
>> On 10/15/2011 08:58 PM, TE Dukes wrote:
>>> Are we running CentOS or what?
>>>
>>> That new kernel in cr repository won't boot!! I get kernel panic. This =
is
>>> getting out of hand. Know you are smarter than me when it come to this
>>> stuff, but please..........
>> I have no trouble booting it.
>>
>> If you've run into a problem, the most effective thing to do is file a
>> bug. If you can do some digging into the cause, discussing your finding
>> here (and attaching relevant bits to the bug) will also help.
>>
>>
> ----------------------------------------------------------------------
> Jim Wildman, CISSP, RHCE jim@rossberry.com http://www.rossberry.net
> "Society in every state is a blessing, but Government, even in its best
> state, is a necessary evil; in its worst state, an intolerable one."
> Thomas Paine
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
>


-- =



Lorenzo Martinez Rodriguez

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