[j-nsp] Full BGP table, one provider w/ 2 routers, slow forwarding convergence

[Clarke Morledge]

Amos,

I am using an MX240, and I am aware of the MX80 platform issue when 
dealing with multiple BGP feeds.  I have the newer 1800 RE, so I was 
hoping to completely avoid anything like that with a beefier RE, running 
64-bit JUNOS.

I do need the full Internet feeds for other reasons, but I am interested 
in the option to filter routes between RIB & FIB to keep my FIB smaller, 
but send the full table downstream.  What JUNOS knob does that?

Do you happen to know the PR number on the full routing table and netflow 
issue? I am doing inline-jflow, so perhaps that may have something to do 
with it.

Clarke Morledge
College of William and Mary



On Thu, 14 Aug 2014, Amos Rosenboim wrote:

> What model of router are you using ?
> What you are describing is a general problem of juniper routers, however it's really bad on
> the low-mid range routers, MX5-80, the 104 is slightly better but not very.
> The stronger REs are less prone for this, although the real solution is a serious change to
> RPD.
> Recent releases should have incremental improvements, although afaik the root cause was not
> corrected.
> 
> There was also another similar issue that involved full routing table and netflow.
> I believe this one was corrected in one of the recent releases.
> 
> Do you really need full routing table?
> Especially when both links are to the same ISP?
> 
> There is also an option to filter routes between the RIB and FIB, so you can send the full
> table downstream but rely on a smaller set of routes for forwarding.
> 
> Cheers,
> 
> Amos