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How to advertise a BGP Default Route to the other BGP neighbors ?

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Question added by Khaled Omar , Senior Service Delivery Engineer , Dell Technologies
Date Posted: 2014/06/10
Shahzada Khan
by Shahzada Khan , Network and Security Engineer (Resident/Onsite) , Etisalat UAE

=router bgp ASN

=neighbor x.x.x.x default-information originate 

Shahin Syed
by Shahin Syed , IT Administrator, Training Officer , Al-Hamad Enterprises

neighbor <Neighbor IP Address> default-originate

Zawar Rafique
by Zawar Rafique , L2 Network Engineer , mobily

neighbor <IP address of neighbor> default-originate

imran khan
by imran khan , Network Consultant , Net Home

with different way.

1. network0.0.0.0 (require route exist in routing table.

2. redistributed  inject default route into BGP only when currently present in routing table.

3. default information originate

4. neighbor (IP) default-originate

Saeed Ahmad
by Saeed Ahmad , Branch Manager & CCAI , Career Institute of Advance Computer Studies

default-information originate

 

neighbor <IP> default-originate

There are two ways 

 

1)  network0.0.0.0 mask0.0.0.0 

This will advertise a default route to all of its peers and in order to advertise a default route 

there should be a default route in the RIB.

 

2) neighbor <IP> default-originate

 

We can use this format to advertise routes selectively, and It is not required to have a matching default

route in the BGP table or the RIB

 

oussman jebbe
by oussman jebbe , Team Leader in the IP Operations team (4 members). , Cedarcom holding

router bgp ASN_NB

default-information originate

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