Hierarchical Policy Conditions - Cisco NCS 6000 Series Configuration Manual

Implementing Routing Policy
end-policy
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set metric-type type_1
if destination in (2001::/8) then
end-policy
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Editing Routing Policy Configuration Elements Using the Vim Editor
Editing elements of a routing policy with Vim (Vi IMproved) is similar to editing them with Emacs except
for some feature differences such as the keystrokes to save and quit. To write to a current file and exit, use
the :wq or :x or ZZ keystrokes. To quit and confirm, use the :q keystrokes. To quit and discard changes, use
the :q! keystrokes.
You can reference detailed online documentation for Vim at this URL:
Editing Routing Policy Configuration Elements Using CLI
The CLI allows you to enter and delete route policy statements. You can complete a policy configuration
block by entering applicable commands such as end-policy or end-set. Alternatively, the CLI interpreter
allows you to use the exit command to complete a policy configuration block. The abort command is used
to discard the current policy configuration and return to XR Config mode.
Editing Routing Policy Language set elements Using XML
RPL supports editing set elements using XML. Entries can be appended, prepended, or deleted to an existing
set without replacing it through XML.

Hierarchical Policy Conditions

The Hierarchical Policy Conditions feature enables the ability to specify a route policy within the "if" statement
of another route policy. This ability enables route-policies to be applied for configurations that are based on
hierarchical policies.
With the Hierarchical Policy Conditions feature, Cisco IOS XR RPL supports Apply Condition policies that
can be used with various types of Boolean operators along with various other matching statements.
Apply Condition Policies
Apply Condition policies, which Cisco IOS XR RPL supports, allow usage of a route-policy within an "if"
statement of another route-policy.
Consider route-policy configurations Parent, Child A, and Child B:
drop
endif
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
Editing Routing Policy Configuration Elements Using the Vim Editor
http://www.vim.org/
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