Login or Register to Ask a Question and Join Our Community


AIX

AIX with 2 Net Interfaces lose connectivity

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems AIX AIX with 2 Net Interfaces lose connectivity
# 8  
Old 07-07-2014
Quote:
Originally Posted by ibmtech
Where is the default gateway in here? I see 10.10.20.16 as en0 interface IP.
I feel its an issue of gateway.

Ok run this and paste the output.

lsattr -El inet0 | grep route
thanks a lot for you help

Ok, I was able to access one of the production server which has both nics and I run both commands again

Code:
Server1PRD: /> netstat -nr                                                           
Routing tables                                                                     
Destination        Gateway           Flags   Refs     Use  If   Exp  Groups        
                                                                                   
Route Tree for Protocol Family 2 (Internet):                                       
default            10.10.10.1         UG       34  35227001 en0      -      -       
10.10.10.0          10.10.10.11        UHSb      0         0 en0      -      -   =>  
10.10.10/24         10.10.10.11        U         2      6962 en0      -      -       
10.10.10.11         127.0.0.1         UGHS     61 560916318 lo0      -      -       
10.10.10.255        10.10.10.11        UHSb      0         4 en0      -      -       
10.10.20.0          10.10.20.11        UHSb      0         0 en1      -      -   =>  
10.10.20/24         10.10.20.11        U         0 568733107 en1      -      -       
10.10.20.11         127.0.0.1         UGHS      2       763 lo0      -      -       
10.10.20.255        10.10.20.11        UHSb      0         0 en1      -      -       
127/8              127.0.0.1         U        17   2471843 lo0      -      -       
                                                                                   
Route Tree for Protocol Family 24 (Internet v6):                                   
::1%1              ::1%1             UH        2    426257 lo0      -      -


Code:
Server1PRD: /> lsattr -El inet0 | grep route                                          
route         net,-hopcount,0,,0,10.10.10.1 Route                               True



by the way both en0 and en1 have GW 10.10.10.1

I can not remove Gateway 10.10.10.1 from en1 should I?

thanks a lot
# 9  
Old 07-07-2014
You are confusing me,
You showed a different server 1st, which does not have a gateway and now you are showing another server.

Paste the output from the problematic server (mention the hostname and/or IP), I don't need output from others.
Are you saying you did etherchanneling and configured different subnet on each adapter? have you done vlan tagging? For multiple VLANs to exist on same ent port we need vlan tagging and NOT just doing etherchanneling.

Explain me the above.
# 10  
Old 07-07-2014
the output I just pasted is from a problematic server which has 2 nics I was using a "TEST" server which has just one nic in the 10.10.20.x segment but to be realistic I requested access to one of the production server having the issue... since it was out customer who found the issue

this server is 10.10.10.23 - Production IP
10.10.20.11 - Backup IP


yes both ends have etherchannels I mean Power 701 (AIX-TSM) is using 2 adapters for etherchannel and yes I used smitty vlan to create VLAN 500 for backups

for VIO in the p260 - pureflex - which hosts the PRODuction LPARs is using etherchannel and vlans are create as well
# 11  
Old 07-07-2014
Hmmm,
Ok, did you try to login to the client using 10.10.20.11 IP?

Have you done a traceroute from TSM server to client (10.10.20.11)?

Or have you tried adding the TSM server IP/Hostname in /etc/hosts file of client?
# 12  
Old 07-07-2014
Quote:
Originally Posted by ibmtech
Hmmm,
Ok, did you try to login to the client using 10.10.20.11 IP?

Have you done a traceroute from TSM server to client (10.10.20.11)?

Or have you tried adding the TSM server IP/Hostname in /etc/hosts file of client?

Yes I can login from AIX-TSM to 10.10.20.11 using ssh

this is the traceroute
Code:
Power-TSM:/> traceroute 10.10.20.11
trying to get source for 10.10.20.11
source should be 10.10.20.10
traceroute to 10.10.20.11 (10.10.20.11) from 10.10.20.10 (10.10.20.10), 30 hops max
outgoing MTU = 1500
 1  10.10.20.11 (10.10.20.11)  1 ms  0 ms  0 ms

I have not tested - /etc/hosts - but do you think it will work?

thanks
# 13  
Old 07-08-2014
Ah! ok, let me ask you this, have you looked the DNS?
Code:
nslookup <hostname of  tsmserver>  from client
also do the reverse nslookup
nslookup <IP of tsmserver> from client (x.x.20.11)

Is it resolving to correct IP/Hostname?

Check you /etc/resolv.conf file

Also, your /etc/netsvc.conf file for "hosts=xxxx" what is this value?

Let me know, what you see.
# 14  
Old 07-08-2014
Quote:
Originally Posted by ibmtech
Ah! ok, let me ask you this, have you looked the DNS?
Code:
nslookup <hostname of  tsmserver>  from client
also do the reverse nslookup
nslookup <IP of tsmserver> from client (x.x.20.11)

Is it resolving to correct IP/Hostname?

Check you /etc/resolv.conf file

Also, your /etc/netsvc.conf file for "hosts=xxxx" what is this value?

Let me know, what you see.
no we are not using DNS here, we are hosting those LPARs in our VIO and there is on DNS to resolve between 10.10.20.x
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. AIX

Temporarily lose connection to AIX box

Hello All, I have a strange problem and I'm hoping someone can help. I honestly don't know where else to look. I have a number of AIX boxes in my environment and for some reason I would periodically lose connectivity to all services (except ping) to one of my boxes. It happens sporadically... (2 Replies)
Discussion started by: bbbngowc
2 Replies

2. AIX

Udp_sendspace setting in AIX diff interfaces

Hey, would like to set udp_sendspace parameters in diferrent interface ent2 ent3 ent4 , no -p -o udp_sendspace=65536 just set on ent2 and chdev -l ent3 -a udp_sendspace=65536 doesn't work is that possible to set up this parameters by interface? (1 Reply)
Discussion started by: prpkrk
1 Replies

3. Solaris

Interfaces and Virtual-interfaces queries

Hi Al, In course of understanding networking in Solaris, I have these doubts on Interfaces. Please clarify me. I have done fair research in this site and others but could not be clarified. 1. In the "ifconfig -a" command, I see many interfaces and their configurations. But I see many... (1 Reply)
Discussion started by: satish51392111
1 Replies

4. AIX

ODBC Connectivity between Oracle10g on AIX and Mainframe

Hi, I have a task of setting up connectivity between Oracle 10g (AIX) and Mainframe (1 library). Went through couple of documents, forums, blogs etc. MY understanding is ODBC Generic Connectivity is free from Oracle side. Question: (may be dumb to you) 1. Has anybody done this and would... (3 Replies)
Discussion started by: jvmani_1
3 Replies

5. AIX

Connectivity from WIndows to AIX

Hi, We have installed oracle on a AIX machine and when we try to connect to AIX machine from oracle client installed on a windows machine or do a telnet to AIX machine on 1521 port , it throws an error connection refused on port 1521 , where all the ports and firewalls are open from windows to... (2 Replies)
Discussion started by: adityakp123
2 Replies

6. Programming

How to run C#.NET in AIX

Hi Guys Am new in UNIX environment I was asked by my boss to write a program that transfer files from the AIX server to the Wintel Server. I have written the program in C# windows which does almost the same thing. So how to run the C# program in UNIX? (1 Reply)
Discussion started by: michmsk
1 Replies

7. UNIX for Advanced & Expert Users

Running C#.NET program in AIX?

Hi Guys Am new in UNIX environment I was asked by my boss to write a program that transfer files from the AIX server to the Wintel Server. I have written the program in C# windows which does almost the same thing. So how to run the C# program in UNIX? (1 Reply)
Discussion started by: michmsk
1 Replies

8. Solaris

list of physical net interfaces

hi, Can I listdown all available net interfaces on my system like SF4800 or Netra440. I know there are 4 port physically present but I can't see or list them using either sysdef -v prtconf -vp prtdiag -v dladm kstat may be I'm missing switched on these or may some other command... (8 Replies)
Discussion started by: busyboy
8 Replies

9. Shell Programming and Scripting

Net::SFTP problem AIX

I am having an issue while trying to run the Net::SFTP module. I have been able to install this on several machines before but have never had this problem. When I am running a simple script to test the sftp it dies but does not trigger the print statement for my error. The last line is in red. ... (0 Replies)
Discussion started by: kofs79
0 Replies
Login or Register to Ask a Question