Login or Register to Ask a Question and Join Our Community


Linux

Issue with ethernet interface

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems Linux Issue with ethernet interface
# 22  
Old 02-21-2014
traceroute from B to C:
Code:
$ traceroute 10.6.0.33
traceroute to 10.6.0.33 (10.6.0.33), 30 hops max, 46 byte packets
 1  10.6.0.33 (10.6.0.33)  0.588 ms  0.118 ms  0.092 ms
$

netstat for hostA
Code:
# netstat -rv
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.10.128.49    10.10.136.1     255.255.255.255 UGH       0 0          0 eth0
10.10.135.10    10.10.136.1     255.255.255.255 UGH       0 0          0 eth0
10.6.0.0        *               255.255.255.192 U         0 0          0 eth2
10.10.136.0     *               255.255.255.192 U         0 0          0 eth0
default         10.10.136.2     0.0.0.0         UG        0 0          0 eth0
#

netstat for hostB
Code:
$ netstat -rv
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.9.3.8        *               255.255.255.248 U         0 0          0 eth1
10.9.3.0        *               255.255.255.248 U         0 0          0 eth0
10.6.0.0        *               255.255.255.192 U         0 0          0 eth2
default         10.9.3.1        0.0.0.0         UG           0 0          0 eth0
$

netstat for hostC
Code:
$ netstat -rv

IRE Table: IPv4
  Destination             Mask           Gateway          Device Mxfrg Rtt   Ref Flg  Out  In/Fwd 
-------------------- --------------- -------------------- ------ ----- ----- --- --- ----- ------ 
default              0.0.0.0         10.10.128.1                  1500*    0   1 UG    5334      0 
10.6.0.0             255.255.255.192 RKARM1               eth0    1500*    0   1 U     3737      0 
10.10.128.0          255.255.255.192 RKARM1-01            eth1    1500*    0   1 U     2169      0 
localhost            255.255.255.255 localhost            lo0     8232*    0   3 UH    1456      0 
$

I notify that the link light is lit
This User Gave Thanks to cerco For This Post:
rbatte1
# 23  
Old 02-21-2014
I can't put the information you have posted together into a picture that makes any sense. In post 18 HostC had a single interface, eth0. If that is true why does the hostC routing table think that hostC has two interfaces? I'm not real sure what I can trust.

The strangest thing I see is the default route in hostC being first. I thought that the routing table is scanned sequentially with the first match being taken. If that is right, HostC default route will always win.

Other than that, I don't don't know where your problem is. This one has me stumped.
# 24  
Old 02-26-2014
hi All,

finally I've resolved my issue, just by this command:
Code:
route add 10.6.0.50 eth2

Frankly I don't understand the importance of this line, although this resolved my problem. so, if someone can explan me its importance, it will help me a lot.

once again thanks to all for your help

bye
# 25  
Old 02-26-2014
Firstly, this added route definition will not be available after the next boot. Is 10.6.0.50 the gateway?

If not and this was the address you were struggling to connect with, then perhaps the address was cached somewhere, perhaps an ARP pointing to the wrong MAC or because of a previous attempt to go via eth0. Maybe I'm talking out of my hat, but i can't think of another explanation.


When you get a chance to boot, please test if the problem recurs. If not, then it is likely to have been something cached, but if it does we will have to dig some more.





Robin
# 26  
Old 02-26-2014
hi Robin,

thanks for your explanation, and as you told it, I'll let you know, if the issue persists or not, when I get the chance to reboot my server.

take care
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

C program to detect duplicate ip address if any after assigning ip address to ethernet interface

Hi , Could someone let me know how to detect duplicate ip address after assigning ip address to ethernet interface using c program (3 Replies)
Discussion started by: Gopi Krishna P
3 Replies

2. IP Networking

Channel bonding Issue - Bond0 interface not getting up in on RHEL6

Hello, I am trying to set up Channel Bonding on a RHEL6 Virtual Box VM. I have 2 ethernet cards on the machine which are set up in Internal Network mode. I followed all the steps exactly as mentioned in the RHEL6 deployment Guide, but for some reason i think results are not correct. Here are my... (13 Replies)
Discussion started by: Rohit Bhanot
13 Replies

3. AIX

interface collisions on ethernet nic

Hi, is there any method to check the interface collisions on ethernet NIC in AIX. I know that in Solaris it's netstat -i but I've written that in AIX it doesn't show this. Thanks&regards, p (1 Reply)
Discussion started by: pitmod
1 Replies

4. IP Networking

Need a bridge from an ethernet interface to a serial interface

This is my situation DOS pc serial cable (sl0) Linux Pc eth1 192.168.0.10 <-------------------->192.168.0.2 <------------>192.168.0.1 (router) I connected the linux pc and the dos pc with a SLIP (serial line internet protocol), so they can communicate in the sl0 interface. ... (3 Replies)
Discussion started by: mghis
3 Replies

5. Solaris

Sun Solaris ethernet interface

Hi, During the installation of solaris suppose I am configuring one ethernet interface that is primary but on my server there are 4 ethernet interfaces,because all other interface not configured, what is way to find out how many ethernet interfaces are there on Server, (6 Replies)
Discussion started by: manoj.solaris
6 Replies

6. Solaris

Network interface issue

Hi All, I want to configure network into my system. i tried following in to configure the interface to find the name of interface #prtdiag |grep net i got following 0 PCI-1 33 1 network-SUNW, hme then i tried following #prtconf -v |grep net network, instance #0 (6 Replies)
Discussion started by: kumarmani
6 Replies

7. Solaris

Ethernet card drivers issue...

I need to install ethernet card drivers on intel machine. How can i know which Ethernet card interface (sfe,rh,rtls...) is it? How can i know the speed of that card? How can i know network traffic ? If network traffic is more with that interface what should i do? Thanks in advance (2 Replies)
Discussion started by: younus_syed
2 Replies

8. Solaris

Network Interface Issue

Hi all, Here im facing problem with NIC Interface with my X86 Version of Solaris Express, even after loading module for that Interface. So please check this below mentioned log for your use and get back to me ASAP. - - - -- --... (0 Replies)
Discussion started by: baraghun
0 Replies

9. SCO

Issue with a ethernet card

Installed a replacement 3com pci card on an ibm PC 300 GL, running OpenServer 6.0 , brought up system, and recieved this message: Fsstat:/dev/boot mounted Mounted /stand filesystem System auditing is not enabled. Dlpid:Unable to open network adapter driver (/dev/mdi/r8e0) Dlpid:No such... (0 Replies)
Discussion started by: tazmss1
0 Replies

10. Programming

determine if a ethernet interface is up

Howto check if a ethernet interface is up? It's impossible to determine via the ipaddress i have learned, or? Can someone please give me a hint on howto do? Environment == Linux x86 GNU GCC. :D regards Esaia (2 Replies)
Discussion started by: Esaia
2 Replies
Login or Register to Ask a Question