iBGP over GRE?
On Thu, Mar 6, 2014 at 2:58 PM, Bryan Ashley <[email protected]> wrote: > so this scenario was a much more scaled down version of the actual > topology. Basically I have a "gap" of routers that I don't manage or have > access to in between mine running eBGP. We are collecting some metrics and > doing monitoring on the AS-PATH of the routes received, among other > attributes, for both ends so losing some of this information is a problem. > Again, I know the right answer here is to run iBGP across the IGP and I am > fighting that fight but it got me looking for alternative solutions and > figured I would see if anyone else ever had to come up with a creative > solution before. > > > On Thu, Mar 6, 2014 at 4:09 PM, Saku Ytti <[email protected]> wrote: > > > On (2014-03-06 10:37 -0500), Bryan Ashley wrote: > > > > > My searches have come up a little short however I found a couple > > references > > > to using automatic-tag and as-path tag to carry this through. I cant > > seem > > > to find any Junos reference information on this so wanted to reach out > to > > > the ether and see if others have faced this situation before or have > any > > > other recommendations on solutions. > > > > I don't think JunOS supports this. > > > > It's bit of hack at any rate. It's not transporting AS_PATH, it's > > transporting > > single 16b ASN. > > It's essentially abusing (some what well-defined and interoperable abuse) > > 32b > > tag field for this purpose. > > > > Maybe you could try to do some of this manually, set some tags, which > > trigger > > 'set then origin x', as-path-expand/prepend might be more challenging. > > Recommendation for solution might be easier with rationale why you need > to > > transport origin+aspath over IGP. > > > > -- > > ++ytti > > > > >
