Hi,
 if4-mtu-changes fails only for specific value of mtu i.e 68 Instead of 68 if we will use  84 then this test case gets pass. below are interface betails for local host and remote host
 
for local host
===> ethtool -i eth1
 
driver: bnx2
version: 2.1.11
firmware-version: bc 5.2.2 NCSI 2.0.6
bus-info: 0000:02:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
for remote host
 
=======> ethtool -i eth1

driver: bnx2
version: 2.1.11
firmware-version: bc 5.2.3 NCSI 2.0.6
bus-info: 0000:02:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no
so my suggested code changes for if4-mtu-changes test case is
 
# The array of the value which MTU is changed into sequentially
--- CHANGE_VALUES="784 1142 426 1500 68 1500 68 748 68 1142 1500"

# The array of the value which MTU is changed into sequentially
+++ CHANGE_VALUES="784 1142 426 1500 84 1500 84 748 84 1142 1500"
Could u Please provide  me any pointer/suggstion.
 
Thanks and Regards,
Bhushan


From: chrubis@suse.cz [mailto:chrubis@suse.cz]
Sent: Tue 2/12/2013 9:03 PM
To: Bhushan Kumar
Cc: ltp-list@lists.sourceforge.net
Subject: Re: [LTP] LTP] [PATCH ]: network stress interfaces part of the LTP stress fails

Hi!
> Actually  i relized below mentioned suggetion given by you.Currently i am trying to find out exact root cause for this issue :
>
> The Network stress interfaces part of the LTP stress fails.
>
> network_stress.interface:if4-mtu-change                 FAIL       2  
>
> Below are the cause for failing above mentioned testcase:
>
> if4-mtu-change01    0  TINFO  :  Verify the IPv4 connectivity is not broken when ifconfig command changes MTU 128 times every 5 seconds
>
> if4-mtu-change01    1  TFAIL  :  eth1 is broken.
>
> if4-mtu-change02    0  TINFO  :  Verify the IPv4 connectivity is not broken when ip command changes MTU 128 times every 5 seconds
>
> if4-mtu-change02    2  TBROK  :  Test Link 0 is somthing wrong.
>
> Could u Please provide  me any pointer/suggstion.

Sorry, you have to debug this on your own.

--
Cyril Hrubis
chrubis@suse.cz


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