.. _example_protocols_bgp_peer-group_address-family_ipv6-unicast_nexthop-self:

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Nexthop-Self
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.. sidebar:: Contents

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Scenario to verify BGP **peer-group address-family ipv6-unicast nexthop-self** inheritance.
When ``nexthop-self`` is configured on a peer-group under address-family ipv6-unicast,
routes reflected to members have the next-hop changed to the reflector's address
instead of keeping the original next-hop.

.. image:: nexthop-self.svg
  :width: 400

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Test iBGP IPv6 - Without nexthop-self reflected route has unreachable next-hop
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Description
===========

Test that without ``nexthop-self`` on the peer-group, routes reflected to DUT2
keep the original next-hop (DUT1: 2001:db8:1::200). Since DUT2 has no route
to 2001:db8:1::/64, the next-hop is inaccessible and the route is not usable.

Scenario
========

.. include:: nexthop-self/testibgpipv6-withoutnexthop-selfreflectedroutehasunreachablenext-hop

.. raw:: html

  <hr>

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Test iBGP IPv6 - Peer-group nexthop-self changes next-hop on reflected routes
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Description
===========

Test that ``nexthop-self`` configured on a peer-group under address-family ipv6-unicast
changes the next-hop of reflected routes to DUT0's own address. DUT1 (eBGP) announces
2001:db8:10::/64 to DUT0 (RR). DUT0 reflects it to DUT2 (iBGP client in peer-group).
With nexthop-self, DUT2 sees DUT0 (2001:db8:2::100) as next-hop.

Scenario
========

.. include:: nexthop-self/testibgpipv6-peer-groupnexthop-selfchangesnext-hoponreflectedroutes

.. raw:: html

  <hr>