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doc: Fixup doc for vrf-2-vrf as per suggestions in Review

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Fixup the documentation to suggested changes from the Review.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2018-04-24 10:21:29 -04:00
parent 321b4bc92e
commit e967a1d0c0
1 changed files with 16 additions and 6 deletions
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22
doc/user/bgp.rst
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@ -1549,8 +1549,9 @@ is specified, the BGP protocol process belongs to the default VRF.
BGP routes may be leaked (i.e., copied) between a unicast VRF RIB and the VPN
safi RIB of the default VRF (leaking is also permitted between the unicast RIB
of the default VRF and VPN) or routes may be leaked directly between two BGP
VRF instances. A common application of the VPN-VRF feature is to
of the default VRF and VPN). A shortcut syntax is also available for
specifying leaking from one vrf to another vrf using the VPN RIB as
the intemediary. A common application of the VPN-VRF feature is to
connect a customer's private routing domain to a provider's VPN service.
Leaking is configured from the point of view of an individual VRF: ``import``
refers to routes leaked from VPN to a unicast VRF, whereas ``export`` refers to
@ -1587,7 +1588,8 @@ routing domain which is shared across all its sites. More complex routing
topologies are possible through use of additional route-targets to augment the
leaking of sets of routes in various ways.
For direct VRF to VRF leaking the RD and RT are auto-derived.
When using the shortcut syntax for vrf-to-vrf leaking, the RD and RT are
auto-derived.
Configuration
-------------
@ -1673,13 +1675,21 @@ address-family:
.. index:: import vrf VRFNAME
.. clicmd:: import vrf VRFNAME
Enables direct importation of VRF routes to another VRF. The RD and RT
are auto derived and are not needed for VRF - VRF route leaking.
Shortcut syntax for specifying automatic leaking from vrf VRFNAME to
the current VRF using the VPN RIB as intermediary. The RD and RT
are auto derived and should not be specified explicitly for either the
source or destination VRF's.
This shortcut syntax mode is not compatible with the explicit
`import vpn` and `export vpn` statements for the two VRF's involved.
The CLI will disallow attempts to configure incompatible leaking
modes.
.. index:: no import vrf VRFNAME
.. clicmd:: no import vrf VRFNAME
Disables direct VRF to VRF route leaking.
Disables automatic leaking from vrf VRFNAME to the current VRF using
the VPN RIB as intermediary.
.. _displaying-bgp-information: