Please i need someone to clarify what is the difference between the "default-originate" command and "network 0.0.0.0 - ip route 0.0.0.0 0.0.0.0 null0" commands. I see both are serving the same purpose by advertising a default route to a peer but in the same time i feel a difference on them.
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take the example below.
The default route to neighbor 10.10.10.2 is injected only if there is a route to 192.168.1.0.
access-list 1 permit 192.168.1.0
route-map DEFAULT 10 permit
match ip address 1
router bgp 1
network 10.0.0.0 mask 255.0.0.0
neighbor 10.10.10.2 remote-as 2
neighbor 10.10.10.2 default-originate route-map DEFAULT
Thanks for the information, but i still have a little doubt, what is the difference between "default-information originate and default-information originate always" ???
There is no such command in BGP - default-information originate always... this is for OSPF...
In OSPF the default-information originate will advertise a default route when such a route is present in the RIB
default-information originate always will make the router advertise a default route regardless of the presence of a default route in the router - hence it ALWAYS originates a default route...