Exhibit:Referring to the exhibit, which two statements are correct about default BGP advertisements?

The exhibit shows a BGP peering scenario between three routers:router1androuter2are part of the same AS (AS65000), while theSP routeris in a different AS (AS65101). This indicates anEBGP (External BGP)peering between the SP router and router1, andIBGPbetween router1 androuter2.

Step-by-Step Breakdown:

Next-Hop Behavior in BGP:

IBGP: In IBGP, thenext-hop addressis not modified when advertising routes within the same AS. Thus, when router1 advertises routes learned from router2 to the SP router, it will keep thenext-hop addressof router1, not router2.

EBGP: In EBGP, thenext-hop addressis modified. When router1 receives routes from the SP router, it will advertise them to router2 with thenext-hop addressof router1.

Route Propagation:

Routes received byrouter1fromrouter2will be advertised to the SP router with router1 as the next hop.

Similarly, routes advertised by theSP routerwill be passed on to router2, with router1 remaining as the next hop.

Juniper Reference:

BGP Next-Hop: Juniper's BGP implementations follow standard BGP next-hop behavior, where the next-hop is modified in EBGP but not in IBGP, ensuring proper route advertisement across autonomous systems.