[j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Benny Amorsen
As mentioned in the thread on OSPF packet drops, I have an MX80 dropping OSPF packets during every commit, after adding ~1500 VLAN interfaces. The major load seems to be ppmd, not rpd. On larger MX's, it is apparently possible to distribute ppmd processing to the line cards. Does that work on the

Re: [j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Pavel Lunin
29.11.2012, Benny Amorsen wrote: Alternative, is BFD cheap on an MX80? If I turn on BFD, I could set the OSPF hello timers longer than the current 10 seconds. Of course that is no good if BFD just makes even more work for the already-busy routing engine. AFAIK, at least as of 11.something, BFD

Re: [j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Saku Ytti
On (2012-11-29 20:34 +0400), Pavel Lunin wrote: AFAIK, at least as of 11.something, BFD was handled by RE on MX80, not the host-CPU like it is on the big MXes. Looks like it's because the host-CPU on MX80 is quite less quick (marketing way of reading this is I suppose host-CPU means PFE/LC

Re: [j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Benny Amorsen
Pavel Lunin plu...@senetsy.ru writes: AFAIK, at least as of 11.something, BFD was handled by RE on MX80, not the host-CPU like it is on the big MXes. Looks like it's because the host-CPU on MX80 is quite less quick (marketing way of reading this is it's more power and heat efficient thus more

Re: [j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Pavel Lunin
2012/11/29 Saku Ytti s...@ytti.fi On (2012-11-29 20:34 +0400), Pavel Lunin wrote: AFAIK, at least as of 11.something, BFD was handled by RE on MX80, not the host-CPU like it is on the big MXes. Looks like it's because the host-CPU on MX80 is quite less quick (marketing way of reading this

Re: [j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Simon Dixon
I've been using IPFIX on a few MX80's for a while now, the only impact I've seen on the RE CPU is that it can spike to 100% during a commit, if the router also has a full BGP table. Otherwise the RE sits at 6%. Using the default Jflow on the MX80's was horrible, the RE CPU would sit around 70%

Re: [j-nsp] Distributing OSPF load on MX80

2012-11-29 Thread Saku Ytti
On (2012-11-30 08:08 +0800), Simon Dixon wrote: I've been using IPFIX on a few MX80's for a while now, the only impact I've seen on the RE CPU is that it can spike to 100% during a commit, if the router also has a full BGP table. If you use inline IPFIX export, it's in trio, and should not