What is the default export routing policy for EBGP?
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A. B. C. D.A
The default export routing policy for EBGP (External BGP) on a Juniper Networks router is option B, "Accept all BGP routes."
When a BGP router sends updates to its EBGP peer, it advertises all the BGP routes that it has learned from other BGP peers or from internal routing protocols like OSPF or IS-IS. By default, Junos will export all BGP routes to the EBGP neighbor without any filtering or modification.
This means that if the router has learned any BGP routes from any source, it will advertise all of them to its EBGP neighbor without any changes or filtering. This default behavior can be changed by configuring an export policy.
Option A, "Accept all active BGP routes" implies that only active BGP routes will be advertised to the EBGP neighbor. However, this is not the default behavior for Junos.
Option C, "Accept no routes," would cause the router to not advertise any routes to its EBGP neighbor. This is not the default behavior for EBGP.
Option D, "Accept all active IGP routes," would export all active IGP routes to the EBGP neighbor, rather than all BGP routes. This is not the default export policy for EBGP in Junos.