07-10-2014
Quote:
Originally Posted by
bakunin
hmm, in 3 you said there is no VIOS, now i am confused. Please describe your (physical and virtual) network setup in detail, from the switch to the kernel.
OK,
AIX-TSM Server is a Power 710, where AIX was installed on top of it. This servers has no VIO.
has two NICs
en0 administration
en1-en2 backup in etherchannel ( anyway without etherchannel we tried as well and the issue is still there just using en1)
Quote:
I don't think this is default. I even suppose this is why you lose connectivity sometimes. If a packet comes in on interface 1 this doesn't necessarily have to answer if two (or more) interfaces are in the same subnet. It could be any other interface in this network too. If your en1 answers and this traffic is routed to the loopback device, the connection would never come to pass.
I suggest you investigate this, IMHO this is the most likely source of the problem.
Good point
Quote:
For a proper routing table you need 3 entries:
1) a default route, telling the system where to send everything for which no rule exists,
2) route directing everything on the "home net" to the interface in the net,
3) a loopback, directing 127/8 to lo0.
For instance: your network on en0 is 10.10.10/24, your IP is 11. Your second network is "10.10.20/24", IP is 11 again. You will need 4 rules for that:
1) default -> nearest router, say, 10.10.10.1
2) 10.10.10/24 -> 10.10.10.11
3) 10.10.20/24 -> 10.10.20.11
4) 127/8 -> 127.0.0.1
I hope this helps.
we might need to take a look at this then
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LO(4) Kernel Interfaces Manual LO(4)
NAME
lo - software loopback network interface
SYNOPSIS
/sys/conf/SYSTEM:
NLOOP 1 # loop-back pseudo-device
DESCRIPTION
The loop interface is a software loopback mechanism which may be used for performance analysis, software testing, and/or local communica-
tion. As with other network interfaces, the loopback interface must have network addresses assigned for each address family with which it
is to be used. These addresses may be set or changed with the SIOCSIFADDR ioctl. The loopback interface should be the last interface con-
figured, as protocols may use the order of configuration as an indication of priority. The loopback should never be configured first
unless no hardware interfaces exist.
DIAGNOSTICS
lo%d: can't handle af%d. The interface was handed a message with addresses formatted in an unsuitable address family; the packet was
dropped.
SEE ALSO
intro(4N), inet(4F), ns(4F)
BUGS
Previous versions of the system enabled the loopback interface automatically, using a nonstandard Internet address (127.1). Use of that
address is now discouraged; a reserved host address for the local network should be used instead.
3rd Berkeley Distribution August 1, 1987 LO(4)