Juniper IGP - CONFIGURATION GUIDE V11.1.X, Руководство по настройке

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ip split-horizon
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Use to configure the split horizon feature and poison reverse features for the
interface. Enabled by default, split horizon prevents the RIP router from
advertising routes from the originating interface.
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Poison reverse routing updates are disabled by default; when enabled, they set
the metric for routes originating on the interface to infinity, thus explicitly
advertising that the network is not reachable. This helps to prevent routing loops.
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In most configurations, you will want to accept the default condition.
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Example
host1(config-if)# no ip split-horizon
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Use the no version to disable split horizon and enable poison reverse routing
updates.
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See ip split-horizon
ip summary-address
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Use to specify an IP address and network mask to identify which routes to
summarize.
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You can optionally specify a metric associated with the summary address. The
default metric is 1.
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Example
host1(config-router)# ip summary-address 4.4.0.0 255.255.0.0 5
host1(config-router)# ip summary-address 4.3.0.0 255.255.0.0 6
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Use the no version to stop summarization for the specified routes.
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See ip summary-address
match-set summary prefix-tree
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Use to specify a prefix tree that summarizes routes for a particular route map.
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Use the ip prefix-tree command to set the conditions of the prefix tree, including
which routes to summarize and how many bits of the network address to
preserve.
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Example
host1(config-route-map)# match-set summary prefix-tree boston
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Use the no version to disable the use of the prefix tree by the route map.
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See match-set summary prefix-tree
maximum-paths
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Use to control the maximum number of parallel routes that RIP can support.
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RIP installs multiple equal-cost paths to a given destination only if each has a
different next hop.
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Configuration Tasks
JUNOSe 11.0.x IP, IPv6, and IGP Configuration Guide