Solaris: IPMP中in.mpathd进程的作用(主要是实现IPMP网卡故障的自动检测)
这个问题可以演化出很多有趣的问题,如在IPMP环境中,如果没有主机没有设置default router,
则IPMP中的网卡会有哪些表现,下面就是Sun官方文档给出的一些解释.
Because in.mpathd determines what targets to probe dynamically, you cannot configure the
targets. Routers connected to the link are chosen as targets for probing. If no routers
exist on the link, arbitrary(任意的,随意的) hosts on the link are chosen. A multicast packet
sent to the "all hosts" multicast address (224.0.0.1 in IPv4 and ff02::1 in IPv6) determines
the arbitrary hosts. The first few hosts that respond to the echo packets are chosen as
targets for probing. If in.mpathd cannot find routers or hosts that responded to ICMP echo
packets, in.mpathd cannot detect failures.
从解释中可以看到,如果in.mpathd进程没有办法判断和检测到发生故障的网卡, IPMP就失去了
原有的功能了.
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