[AusNOG] OSPF question

Alex Samad alex at samad.com.au
Fri May 19 13:48:02 EST 2017


If I have a router with 4 interface

int1 connect to the OSPF network / backbone
and int 2,3,4 are vlans with no other routers attached

int1 has network
int2 has network
int3 has network
int4 has network

If I want the network

distributed by OSPF, I can add in the interfaces int2-4 and then make them
passive as there is no OSPF there.

Just realised I can also redistribute the prefixes as NSSA-ext1 or 2.

Whats the difference , which is considered to be best practices, I have
also setup interfaces with passive OSPF.

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