Default routes on BGP routers with full feeds

I often opt to leave one or more default routes configured with low priority (lower than BGP). The thinking is that if there is a fault with BGP, the router will still operate and the fault can be corrected remotely (in-band). The downside is that I might pass traffic for non-existing destinations an additional hop and put the load of generating an ICMP unreachable on someone else's router.


Long time I had the same opinion, however, if someone operates a network with multiple upstream providers the operator should be able to afford a proper out of band console access which solves this issue completely.

I would only accept a default route on Uplinks where I am only receiving a partial table for rescue purpose.

Blake Hudson: