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blingblouw
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BGP Distribute default route

Thu Apr 11, 2019 10:57 pm

Hi.

So I'm pretty new to using BGP but I'm having some issues hopefully someone can assist with

I have 2 CCR's peering with an upstream provider for redundancy. Upstream is providing only a single default route (0.0.0.0/0)

Downstream from the 2 CCR's I have 2 more CCR's which each have a BGP session to the main ISP facing BGP routers. The peers are established however the default route is not propagated to the downstream routers, is there anything that I need to do to force this to be, I don't know - redistributed(?) downstream?

Any insight would be much appreciated!
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sri2007
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Re: BGP Distribute default route

Fri Apr 12, 2019 4:47 am

Hello, you should be able to distribute the default route using the default-originate option at the peer configuration (if you want to distribute that default route every time then choose always; and if you only want to send that route only if the router receives the default route from a provider then choose if-installed).
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blingblouw
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Re: BGP Distribute default route

Fri Apr 12, 2019 12:19 pm

Hello, you should be able to distribute the default route using the default-originate option at the peer configuration (if you want to distribute that default route every time then choose always; and if you only want to send that route only if the router receives the default route from a provider then choose if-installed).
thanks!

Then. If I peer with another ISP, all I would need to do is make sure my out-filter contains only the prefix I want to redistribute so that I don't advertise a default route out?
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