Thank you for the clarification. This does make sense. Thanks, Linbo
2016-12-25 18:52 GMT+08:00 Julian Anastasov <j...@ssi.bg>: > > Hello, > > On Sun, 25 Dec 2016, linbo liao wrote: > > > I saw most of example will configure broadcast address for VIP, and > > broadcast address is same as VIP. Like VS-DRouting > > <http://www.linuxvirtualserver.org/VS-DRouting.html>. > > > > Refer to netmask for VIP > > <http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO. > ipvsadm.html#netmask_for_VIP>, > > netmask should be 255.255.255.255. But for broadcast , I can't figure out > > the reason, why should set broadcast same as vip address explicitly ? > > Do not provide broadcast address when configuring VIP. > As VIP is part from some subnet, the broadcast addresses are > automatically generated by the kernel when the primary (first) > IP in subnet was added, see fib_add_ifaddr() for reference. > VIPs should be configured with /32 (255.255.255.255 netmask), > so no broadcast is created for them, for example: > > 1. add RIP/24 on eth0 (first and last address are created as broadcasts) > 2. add VIP/32 on lo (for real server) or on eth0 (for director) > > Regards > > -- > Julian Anastasov <j...@ssi.bg> > _______________________________________________ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
