The general set of conditions that would cause
the selection of one multipath route (set of
next hops for a given destination) is referred
to as 'policy'.
Unless the mechanism indicated by ipForwardPro-
to specifies otherwise, the policy specifier is
the IP TOS Field. The encoding of IP TOS is as
specified by rfc1354. Zero indicates the default
path if no more specific policy applies. Currently,
zero is the only TOS value supported by 3Com.