[j-nsp] Suggestion for Junos Version MX104

[Olivier Benghozi]

About SRRD:
- CPU usage: beware of PR1170656. Told to be fixed in 14.2R7 15.1R4 15.1F6.
- Mem usage: beware of PR1187721. Told to be fixed only in future or service releases (14.2R8 15.1R5 15.1F6-S2 16.1R3).

> On 25 oct. 2016 at 14:23, Mark Tinka <mark.tinka at seacom.mu> wrote :
> On 25/Oct/16 14:16, sthaug at nethelp.no wrote:
>> We see significantly higher rpd CPU usage for a while after IPfix flow
>> export is enabled. However, it seems to settle down to normal levels.
> 
> Yes, that's normally SRRD (Sampling Route-Record Daemon) starting up and
> making sure all is well for the collection and export of the flows.
> 
> We've seen issues where SRRD can hang the box quite badly if a number of
> BGP sessions are de-activated in one go (and vice versa). In such cases,
> the only fix was to reboot the box. This was on the MX80.
> 
> SRRD seems reasonably fragile (and buggy), particularly in high
> route-churn situations. You want to stay on top of it, i.e., fix bugs
> when they are announced, e.t.c.
> 
> Otherwise, under normal conditions, exporting will be done inline, so it
> won't touch the RE.