[c-nsp] C6500 IPv6 redistribute with route-map?

[Patrick M. Hausen]

Hi,

looks like I opened quite a can of worms, here … :-)
Thanks to everybody for the valuable input.

Am 10.12.2013 um 10:19 schrieb Nick Hilliard <nick at foobar.org>:
> On 10/12/2013 08:42, Patrick M. Hausen wrote:
>> I’ve been doing OSPF for quite some years and IMHO this is a perfectly valid and
>> sane way to run an ISP with subscriber lines. And I know more than one competitor
>> (friendly competition ;-) doing exactly the same.
> 
> Why don't you use ibgp for this instead of filling your igp up with stuff
> it doesn't need?  Keep your IGP small - all the bloat belongs in bgp.

I must admit, the thought never occured to me up until now. That’s what I thought
IGPs were for. Use BGP to talk to your upstream, use a suitable link state IGP for
your own network.

Any hints/documents/links for starters? For example one question that immediately
springs up:

I have two redundant systems capable of running full tables. Both have links to
upstreams plus an iBGP connection. I have additional routers with less memory
and CPU that run subscriber lines and (currently) OSPF, later IS-IS as far as my
planning goes.

How can I connect them to the iBGP without them carrying full tables?
Route-maps for the neighbor definitions? Is that really all it takes?


And OTOH again - why would I not want to carry < 100 LSAs in my IGP?

Kind regards
Patrick
-- 
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