12-04-2009
hi,
thanx for you're reply. Below is another note from PowerHA cookbook sg247739.pdf.
"Note: AIX allows IP aliases with different subnet masks to be configured for an
interface. However, PowerHA will use the subnet mask of the base IP address
for all IP aliases configured on this network interface."
From this I think it means that although the service address has a different subnetmask, Power HA will use the the subnetmask of the base IP address. Base IP address is the boot address here
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LEARN ABOUT CENTOS
ipsec_broadcastof
IPSEC_SUBNETOF(3) Library Functions Manual IPSEC_SUBNETOF(3)
NAME
ipsec_subnetof, ipsec_hostof, ipsec_broadcastof - given Internet address and subnet mask return subnet number, host part, broadcast address
SYNOPSIS
#include <libreswan.h>
struct in_addr subnetof(struct in_addr addr,
struct in_addr mask);
struct in_addr hostof(struct in_addr addr,
struct in_addr mask);
struct in_addr broadcastof(struct in_addr addr,
struct in_addr mask);
DESCRIPTION
These functions are obsolete; see ipsec_networkof(3) for their replacements.
Subnetof takes an Internet address and a subnet mask and returns the network part of the address (all in network byte order). Hostof simi-
larly returns the host part, and broadcastof returns the broadcast address (all-1s convention) for the network.
These functions are provided to hide the Internet bit-munging inside an API, in hopes of easing the eventual transition to IPv6.
SEE ALSO
inet(3), ipsec_atosubnet(3)
HISTORY
Written for the FreeS/WAN project by Henry Spencer.
BUGS
Calling functions for this is more costly than doing it yourself.
11 June 2001 IPSEC_SUBNETOF(3)