On Fri, 12 Oct 2018 at 16:07, Niall Donaghy <[email protected]> wrote:
> Yes we (large ISP) tried using dsc interfaces (MX series) to count RTBH > traffic and found, 1) they don't count, and 2) IPv6 is unsupported for dsc. > As with many Junos features, there is not parity between IPv4 and IPv6. > That alone bugged us, but especially as the counters did not work, we > abandoned dsc and just made the IPv4 RTBH sink a discard route: I'm pretty convinced I've had filter counters work on discard interface, but it's like 15 years ago, so I may misremember. Being MX, you can still count the static route discard next hop. [email protected]> request pfe execute target fpc0 command "show jnh 0 exception" |match "discard route" discard route DISC( 66) 0 0 discard route IPv6 DISC(102) 0 0 dsc ifl discard route DISC( 96) 0 0 We're collecting all of the NPU counters and dumping them into a druid for visual presentation with pivot. There is some benefit using this method even if counters would work, because this method will tell you which linecard and which NPU, allowing you to discriminate ingress of packets to specific NPU. And of course in any reasonable collection system, you just ignore the NPU and LC labels and you'll get aggregate discards. -- ++ytti _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
