01-01-2012
I have fulfilled as what redbook said:
1. base IP in different subnet
2. service IP on different subnet from base IP
3. service IP can be in same or different subnet
4. persistent IP can be in same or different subnet from service IP
Lets dont discuss on how I form the etherchannel, you can just assume it is single interface en0 and en1, with no etherchannel behind.
The redbook did not mention what will happen if persistent and service IP with same subnet lies on different interface, and I would like to know if it puts negative effect on hacmp or on AIX.
Lets make the environment looks like this:
en0
1.2.3.4 <-boot IP
192.168.1.1 <-persistent IP
en1
2.3.4.5 <-boot IP
192.168.1.10 <-service IP
What will happen if persistent IP got the same subnet as service IP, while they lies on different interfaces (en0 and en1) ?
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LEARN ABOUT DEBIAN
ipsec_bitstomask
IPSEC_GOODMASK(3) Library Functions Manual IPSEC_GOODMASK(3)
NAME
ipsec_goodmask, ipsec_masktobits, ipsec_bitstomask - check if Internet subnet mask is valid, convert Internet subnet mask to bit count,
convert bit count to Internet subnet mask
SYNOPSIS
#include <freeswan.h>
int goodmask(struct in_addr mask);
int masktobits(struct in_addr mask);
struct in_addr bitstomask(int n);
DESCRIPTION
These functions are obsolete; see ipsec_masktocount(3) for a partial replacement.
Goodmask reports whether the subnet mask is a valid one, i.e. consists of a (possibly empty) sequence of 1s followed by a (possibly empty)
sequence of 0s. Masktobits takes a (valid) subnet mask and returns the number of 1 bits in it. Bitstomask reverses this, returning the
subnet mask corresponding to bit count n.
All masks are in network byte order.
SEE ALSO
inet(3), ipsec_atosubnet(3)
DIAGNOSTICS
Masktobits returns -1 for an invalid mask. Bitstomask returns an all-zeros mask for a negative or out-of-range n.
HISTORY
Written for the FreeS/WAN project by Henry Spencer.
BUGS
The error-reporting convention of bitstomask is less than ideal; zero is sometimes a legitimate mask.
11 June 2001 IPSEC_GOODMASK(3)