How to stop advertising the Default route towards your downstream BGP peer. Here is my diagram given below.
ISP Router Configuration Given Below.
Step-1 := Configure the Prefix-List.
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ip ip-prefix BGP-NO-DEFAULT-ROUTE index 10 deny 0.0.0.0 0
ip ip-prefix BGP-NO-DEFAULT-ROUTE index 20 permit 0.0.0.0 0 less-equal 32
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ip ip-prefix BGP-NO-DEFAULT-ROUTE index 10 deny 0.0.0.0 0
ip ip-prefix BGP-NO-DEFAULT-ROUTE index 20 permit 0.0.0.0 0 less-equal 32
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Step-2 := Configure the route-policy.
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route-policy BGP-NO-DEFAULT-ROUTE permit node 10
if-match ip-prefix BGP-NO-DEFAULT-ROUTE
Step-3 :=Apply On the peer .
#peer 10.1.22.34 route-policy BGP-NO-DEFAULT-ROUTE export
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