关于heartbeating over IP aliases的问题

wzz0001

The heartbeat over IP aliases function allows which of the following?

A  Create a heartbeat network over disks.
B   Define all boot addressess as IP aliases.
C   Define all IP addresses in the same network subnet.
D   Define all boot, service and persistent address as IP aliases when using IPAT over replacement

那位大侠给分析下这道题目，感觉好混乱。


Configure heartbeating over IP Aliases. If this method is used, you specify a base address for the heartbeat paths. HACMP then configures a set of IP addresses and subnets for heartbeating, which are totally separate from those used as service and non-service addresses. With this heartbeating method, all service and non-service IP labels can be configured on the same subnet or on different subnets. Since HACMP automatically generates the proper addresses required for heartbeating, all other addresses are free of any constraints.
根据PowerHA 6.1的说法，这种情况下，除心跳之外所有的IP地址(包含服务IP和boot IP)将没有限制

但是还看到这样一句
When there are multiple interfaces on the same network on the same node, you must carefully plan the subnets and routing. You must avoid any scenario where multiple interfaces have a route to the same subnet.

Although heartbeating over IP Aliases bypasses the subnet requirements for HACMP to perform the heartbeating function correctly, the existence of multiple routes to the same subnet (outside of HACMP) may produce undesired results for your application.
虽然 heartbeating over IP Aliases 绕开了HACMP的子网要求，但是多个路由到1个子网的情况还是可能产生无可预知的结果。

大家看看这样一个配置是否可以行得通
HA包含2个节点，每个节点有2个网卡，采用IPAT over IP aliases和heartbeating over IP Aliases
heartbeat起始地址 10.10.10.1
en0 192.168.1.1
en1 192.168.2.1
service IP 192.168.1.3
是否可行？

或者
en0 192.168.1.1
en1 192.168.1.2
service IP 192.168.1.3
是否可行？

hoootong

选C吧.........

huazai0715

不懂，等待高手中……