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When to use aggregate routing

Hello, I'm currently studying juniper routers and came across aggregate routing, I find this routing protocol rather interesting since the default action is "reject" whereas I thought routing protocols were meant to "forward" data. So when would you prefer using aggregate routing instead of other routing protocols or routing policies..

Thanks in advance, much appreciated

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All Answers

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For this quesiton.

In reply to: When to use aggregate routing

Back to Juniper. I see they have training courses and support.

This forum is mainly for the 99% of networking. When you get into carrier grade gear and questions you are back to the maker.

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In reply to: For this quesiton.

Thanks for the reply, I've just read one of their study guides.. It turns out that the default action is indeed "forward", "reject" is the default action if the destination IP is inside the aggregated IP block however isn't available in the contributing routes. basically aggregate routing is just a method to advertise several networks using only one smaller IP prefix. I believe this is not proprietary, It's just that juniper treats this feature like a routing protocol (giving it a preference number and everything) GrinGrinGrin

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Thank you for this.

In reply to: re:

Some new networkers blow up at the lack of forums for their more advanced questions. Years ago I did work on Cisco gear but I'm a decade away from that and haven't found the need for such even in a average size office of 40ish people and 100 machines.

What I did notice is that what you know on Cisco doesn't do more than act as a primer for other makes. So what I know, may not apply.

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