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

[Amos Rosenboim]

Clarke,

I only got my phone with me, so not much detailed information.
The filtering is done under routing-options forwarding table.
You can define policies there.

I hope this helps.

Amos

Sent from my iPhone

On 14 Aug 2014, at 16:01, "Clarke Morledge" <chmorl at wm.edu<mailto:chmorl at wm.edu>> wrote:

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