On 25 March 2016 at 17:28, Raphael Mazelier <[email protected]> wrote:

> What the point to separate upstream and downstream port on different MPC ?
> (apart FIB size)

If you've cocked up your lo0/ddos-protection config (have not yet seen
network which has not) customer side attack won't bring your device
down if it's on different mpc, as there is build-in policer from
npu=>lc_cpu, so lc_cpu can only offer known amount of traffic to RE,
which is not enough to congest you.

It's minor benefit and I wouldn't separate MPCs based on this. Only
reason I'd do edge/core MPC separation if I'm anyhow going to have
enough MPC/ports to pull it off without extra CAPEX, then it would be
no brainer.


-- 
  ++ytti
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