[j-nsp] MX 3D netflow capacity

[Phil Mayers]

All,

Correct me if any of this is wrong...

On the MX series routers, the only netflow you can do with DPCs is 
heavily sampled, exported by the RE, and limited to Netflow v5?

If you have DPCs, you can buy an MS-DPC to do "real" netflow. Based on 
the software license part numbers, it seems this card can go up to at 
least 40 million (!) flows?

If you have an MS-DPC, how is the flow capture performed? Do packets get 
routed through the MS-DPC and then back into the fabric, or does the 
packet (or some portion of it) get replicated? Does this affect 
forwarding throughput or latency?


If you have MPCs, the Trio chipset supports netflow "inline"? But I see 
no indication of what the flow capacity of the Trio PFEs is. I see some 
part numbers for "10 Gbps of J-flow (requires MPC)" such as 
S-ACCT-JFloW-IN- 10g. But does that number refer to input (customer) 
packets or output (jflow) packets?

I'm assuming these licenses cost a lot of money; can any give 
indications of what cost? Or what fraction of the MPC cost?

How do the two (MS-DPC or MPC with built-in netflow) compare 
feature-wise with "equivalent" Cisco platforms (ASR, for example). Do 
they support IPv6, full "unsampled" (1:1) netflow, full src/dst ip/port 
& interface "masks" etc.?

The upshot of the question is, what combination of Juniper hardware do 
you need to do unsampled netflow "the same as an equivalent Cisco", and 
roughly how much would it cost? I'm assuming "too much" is the answer, 
but would like to be sure.

Cheers,
Phil