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H2+ Question


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#1 bencellini


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Posted 03 February 2019 - 09:40 PM

Hi All.  Please could someone explain to me:

In H2+, Jamesons core network, AS65001, why is iBGP needed between nodes?

obviously vpnv4 is required and bgp within vrf for PE routers but what purpose does peering using BGP ipv4 serve?

The peers within ipv4 do not carry any routes, as all BGP routes are reflected within vpnv4, also as the solution does not use “no bgp default ipv4” the PE routers attempt to peer with the CE routers, they obviously fail, as the edge router interfaces are within the vrf and peer using ipv4 vrf XXX address family instead.

Thank you if you could clear this up for me.

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#2 umar11891


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Posted 04 February 2019 - 09:49 PM

Hi there
In Jamesons core network, if u read the questions carefully they asked u to config ibgp peering,in which ur R1 is acting as route-reflector.
The command 'no bgp default ipv4 unicast' gives u more control in bgp, like if u not activate the nei in ipv4 address family the peering will not establish.

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