IP address conflict


 
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Operating Systems Solaris IP address conflict
# 1  
Old 05-15-2011
IP address conflict

Hi, I am currently working on 2 SPARC-ENTREPRISE T5220 (cluster servers), named SERVER 3A and SERVER 3B.

Both servers have their own Ip ADRESS and share 1 Virtual IP adress to share applications.......

Both servers are available , but can't communicate together right now. For example, from server A, I can't ping server B......, so server A can't use applications of server B.... anymore

I really don't know how to solve this, please help



*******************Network Configuration*******************

Virtual Adress that Both server share : **.***.17.45
IP ADRESS FROM SERVER 3A : **.***.17.41
IP ADRESS FROM SERVER 3B : **.***.17.43


Code:
 
Network Configuration of server 3A : 

ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
aggr1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet ***.168.0.1 netmask ffffff00 broadcast ***.***.*.255
        ether *:**:**:*:25:c3
e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
        inet **.***.17.41 netmask ffffff80 broadcast 10.179.17.127
        ether *:**:**:*:25:c2
e1000g0:1: flags=1040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4> mtu 1500 index 3
        inet [COLOR="red"]**.***.17.45[/COLOR] netmask ffffff80 broadcast **.***.**.127


Code:
 
Network Configuration of server 3B

ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
aggr1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet ***.***.0.2 netmask ffffff00 broadcast ***.***.*.255
        ether 0:21:28:25:5a:ad
e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
        inet **.***.17.43 netmask ffffff80 broadcast **.***.**.127
        ether *:**:28:25:5a:ac
e1000g0:1: flags=4001040842<BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,DUPLICATE> mtu 1500 index 3
        inet **.***.17.45 netmask ffffff80 broadcast **.***.**.127



**********************ERROR MESSAGES**************

Code:
 
3b ip: WARNING: e1000g0:1 has duplicate address ***.***.***.045 (in use by **:**:**:**:25:c2); disabled

Code:
 
May 11 12:38:43 3a TimesTen Replication *.1.**.51[961]: SDP_DB:transmitter.c(895): TT12038: Could not connect to TimesTen daemon on remote host
no answer from **.***.17.43

[/code]

Code:
 
May 11 14:00:00 3b ntpdate[18407]: the NTP socket is in use, exiting
May 11 14:00:00 3b ip: WARNING: e1000g0:1 has duplicate address ***.***.***.045 (in use by **:**:**:**:25:c2); disabled

# 2  
Old 05-15-2011
What kind of cluster do you have there?
# 3  
Old 05-15-2011
The customer didn't give me lots of details, I only know that both servers share some backup applications together. and each servers also have their own applications.
# 4  
Old 05-15-2011
It is clearly misconfigured. If it was working before, then look for recent changes in configuration. If not, then you should get all the info you can from the customer regarding those two servers configuration (someone had to architect this "solution", and hopefully there is some documentation regarding it). Just out of curiosity post output of (if it exists):
Code:
/usr/cluster/bin/scstat -g

# 5  
Old 05-15-2011
ok, i will post this output tomorow morning. do you have a procedure to resolve ip adress conflict?
# 6  
Old 05-15-2011
Yes.
Code:
ifconfig e1000g0 removeif **.***.17.45

on one of the servers.
# 7  
Old 05-15-2011
ok, but both server share this virtual adress to share application, are you sure it will fix the issue?
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