AIX

Originally posted by: SystemAdmin

Hi,

Seems like the question in my previous post was not phrased properly. But anyways, now I would like to know something about the lsattr command and the ODM Database.

I ran the "lsattr -El en1" command the AIX machine which is a cluster node. There are two IP Addresses for Resource Groups (Virtual IP Addresses) on that interface (en1) and one more IP Address (i.e. Total 3). This command returns the third IP Address (not one of the Resource Groups) as value of its "netaddr" attribute. Is it correct to assume that this is the Physical IP address of this interface?

And hence,
#1 In general can we assume that the value returned by the "lsattr -El <interface name>" command will return the Physical IP Address of the interface?

#2 If there are multiple IP Addresses configured for a particular interface, which I believe are returned as values of the "alias4" attribute through the "lsattr -El <interface name>" command, then is there any other command to find those IP Address? In short, I want to find out the IP Addresses, which can be pinged successfully.

Hoping for few replies this time as a different point of view is always helpful even though we don't have a concrete answer.

Thanks in advance.

Regards,
Chaitanya

Originally posted by: nh4aix

Hi there...

you asked:

#1 In general can we assume that the value returned by the "lsattr -El <interface name>" command will return the Physical IP Address of the interface?

Response: Yes, it has been my experience that "lsattr -El enX" will give you the physical IP address. It will not give you any aliases.

#2 If there are multiple IP Addresses configured for a particular interface, which I believe are returned as values of the "alias4" attribute through the "lsattr -El <interface name>" command, then is there any other command to find those IP Address? In short, I want to find out the IP Addresses, which can be pinged successfully.

Response: I like the "netstat -i" command to see all of the interfaces with the aliases assocated with each one. I have colleagues that like "ifconfig -a". They both give you similar info, but I find netstat easier to read. The man pages for netstat are at http://publib.boulder.ibm.com/infocenter/pseries/v5r3/topic/com.ibm.aix.cmds/doc/aixcmds4/netstat.htm?resultof=%22%6e%65%74%73%74%61%74%22%20

Good luck...

joe

Originally posted by: tom-aixadmin

hctunx110$ lsattr -El en0 -a alias4 -a netaddr
alias4 111.222.19.82,255.255.252.0 IPv4 Alias including Subnet Mask True
netaddr 111.222.19.246 Internet Address True
hctunx110$ lsattr -El en0 -a alias4 -a netaddr|sed 's/,/ /'|awk '{print $2}'
111.222.19.82
111.222.19.246

you appear to be on the right track, I'm not sure if I'm not understanding your question.. what addresses would you want that may not be in the lsattr output?

It IS possible for addresses to not be in the ODM.. (if you use ifconifg to change your running system, those dynamic changes don't get stored in the ODM, thus are lost after a reboot.

to see the running system, use netstat or ifconfig. as indicated in previous message.

Tom

Originally posted by: SystemAdmin

Thank you for your answers Joe and Tom. I appreciate the answers.

Actually I want to find the IP addresses which are not associated to the Service IP Labels (Addresses) of the cluster resource groups. I was wondering if it is possible to achieve this through any of the commands. But I guess I can achieve this through a combination of the ifconfig, netstat and lsattr.

I would appreciate if anyone posts a better way to achieve the above.

Thanks,
Chaitanya :)