[j-nsp] P2MP traffic loss over QFX and EX series

[Gonzalo Caceres]

Hi everyone,

I have multicast traffic through a P2MP LSP and when this traffic goes
through an EX or QFX series switch (spot EX4600 and QFX5110/5120) it is
lost. We use these switches as multilayer, they have MPLS suite protocols
(ISIS, LDP and RSVP).



*>show versionModel: ex4600-40fJunos: 21.4R3.15 (recommended version at
day)*

The switch see the transit LSP from IP 2.2.2.2 to 1.1.1.1:




*> show mpls lspTransit LSP: 2 sessionsTo      From    State Rt Style
Labelin Labelout LSPname2.2.2.2 1.1.1.1 Up    0  1     SE 6    2
 lsp1Total 2 displayed, Up 2, Down 0*

Traffic from 1.1.1.1 come's via ae0:


*> show route 1.1.1.11.1.1.1/32 <http://1.1.1.1/32> *[IS-IS/18] via
ae0.01.1.1.1/32 <http://1.1.1.1/32> *[LDP/9] via ae0.0, Push 315471*

  Traffic to 2.2.2.2 goes via ae3:


*> show route 2.2.2.22.2.2.2/32 <http://2.2.2.2/32> *[IS-IS/18] 20:36:26,
via ae3.02.2.2.2/32 <http://2.2.2.2/32> *[LDP/9] 20:36:25, via ae3.0*

The P2MP traffic see on input interface but they not replicate at the
output:








*Interface: ae0, Enabled, Link is UpInput bytes: 7282719382422 (785608168
bps) [207824323]Input packets: 5263502719 (70972 pps) [223103]Interface:
ae3, Enabled, Link is Up  Output bytes: 186620844 (26760 bps) [7545]
Output packets: 1225967 (13 pps) [47]*
Has anyone ever had a similar problem? or are you certain that this type of
LSP will NOT work on these switches?

Thanks, Gonzalo.