aggregate: aggregate (optimise a list of route prefixes) aggregate: aggregate: Takes a list of prefixes in conventional format on stdin, and aggregate: performs two optimisations to attempt to reduce the length of the aggregate: prefix list. The first optimisation is to remove any supplied aggregate: prefixes which are superfluous because they are already included in aggregate: another supplied prefix. For example, 203.97.2.0/24 would be removed aggregate: if 203.97.0.0/17 was also supplied. The second optimisation aggregate: identifies adjacent prefixes that can be combined under a single, aggregate: shorter-length prefix. For example, 203.97.2.0/24 and 203.97.3.0/24 aggregate: can be combined into the single prefix 203.97.2.0/23.