Model: qfx5100-96s-8q Junos: 14.1X53-D42.3 user@qfx5100-96s# set forwarding-options cut-through ? Possible completions: <[Enter]> Execute this command > accounting Configure accounting of traffic > analyzer Analyzer options + apply-groups Groups from which to inherit configuration data + apply-groups-except Don't inherit configuration data from these groups > dhcp-relay Dynamic Host Configuration Protocol relay configuration > enhanced-hash-key Select data used in the hash key for Enhanced IP > Forwarding Engines > family Protocol family > hash-key Select data used in the hash key > helpers Port forwarding configuration > load-balance Configure load-balancing attributes on the forwarding > path > local-bias Turn on local bias functionality no-load-balance-label-capability Disable load balance label capability > port-mirroring Configure port mirroring of traffic > storm-control-profiles Storm control profile for this instance vrf-fallback Enable vrf-fallback forwarding. This will restart PFE | Pipe through a command
Brian Nelson Dept of CS UTD -----Original Message----- From: juniper-nsp [mailto:juniper-nsp-boun...@puck.nether.net] On Behalf Of Brant Ian Stevens Sent: Thursday, June 22, 2017 10:24 AM To: Aaron Gould <aar...@gvtc.com> Cc: juniper-nsp@puck.nether.net; 'Thomas Bellman' <bell...@nsc.liu.se> Subject: Re: [j-nsp] Cut-through forwarding statistics on QFX5100 It is readily available in 17.2; not sure about earlier versions. branto@host# set forwarding-options ? Possible completions: > access-security Access security configuration > accounting Configure accounting of traffic > analyzer Analyzer options + apply-groups Groups from which to inherit configuration data + apply-groups-except Don't inherit configuration data from these + groups cut-through Enable cut-through forwarding > dhcp-relay Dynamic Host Configuration Protocol relay configuration > enhanced-hash-key Select data used in the hash key for Enhanced IP Forwarding Engines > family Protocol family > hash-key Select data used in the hash key > helpers Port forwarding configuration > ip-options-protocol-queue IP Options protocol logical queue parameters > load-balance Configure load-balancing attributes on the forwarding path > local-bias Turn on local bias functionality > port-mirroring Configure port mirroring of traffic > storm-control-profiles Storm control profile for this instance vrf-fallback Enable vrf-fallback forwarding. This will restart PFE > Aaron Gould <mailto:aar...@gvtc.com> > June 22, 2017 at 10:21 AM > Sorry I don't have an answer... but interestingly, I see this as a hidden > command on the cousin ACX5048... is it hidden in the QFX5100 or in plain view > using the ? after set forwarding-option ? > > I haven't used it nor committed it further so I don't know of its > functionality on this ACX5048 > > {master:0}[edit] > agould@eng-lab-5048-1# run show version > fpc0: > ---------------------------------------------------------------------- > ---- > Hostname: eng-lab-5048-1 > Model: acx5048 > Junos: 15.1X54-D20.7 > > ....... > > agould@eng-lab-5048-1# set forwarding-options ? > Possible completions: >> accounting Configure accounting of traffic > + apply-groups Groups from which to inherit configuration data > + apply-groups-except Don't inherit configuration data from these > + groups >> dhcp-relay Dynamic Host Configuration Protocol relay configuration >> family Protocol family > fast-reroute-priority Fast-reroute repair priority >> hash-key Select data used in the hash key >> helpers Port forwarding configuration > no-load-balance-label-capability Disable load balance label > capability >> port-mirroring Configure port mirroring of traffic >> sampling Statistical traffic sampling options >> storm-control-profiles Storm control profile for this instance > {master:0}[edit] > agould@eng-lab-5048-1# set forwarding-options cut-through > > {master:0}[edit] > agould@eng-lab-5048-1# show | compare > [edit] > + forwarding-options { > + cut-through; > + } > > > - Aaron Gould > > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > Thomas Bellman <mailto:bell...@nsc.liu.se> June 21, 2017 at 6:28 PM > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > We have a QFX5100 on which we have enabled cut-throug forwarding ('set > forwarding-options cut-through'). Now I am curious about how effective > that is. Is there any statistics one can dig out about how often the > switch is able to do cut-through, and how often it has to fall back to > store-and-forward? I haven't found anything in 'show interfaces > extensive', nor any other promising 'show' command. > > The dream would of course be to get counters for every combination of > ingress and egress interface, but I would be happy to get just > counters for just ingress or egress, or even just a total for the > entire system. > > The switch is running Junos 17.2R1 if that matters. > > > - -- > Thomas Bellman, National Supercomputer Centre, Linköping Univ., Sweden > "We don't understand the software, and ! bellman @ nsc . liu . se > sometimes we don't understand the hardware, ! > but we can *see* the blinking lights!" ! Make Love -- Nicht Wahr! > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > > iQIcBAEBAgAGBQJZSvMeAAoJEGqUdKqa3HTsuwUP/3YluYW/rUn9igIAd4Jvv/HI > g+Dnr6WuHejv9lKzVaZnsf8XuJkEzXpsVuEzGcBOyn10a77axltEhVwp/pUdPLM6 > /tr04Z0P3at51sQUP3SCot+CxPhfVkJ4TB9j5HET5zouwRBTDFlvPhpRoWStaGjz > VV/5AlQDAD3xrw49ypFiJ+FQ122hj1Xz6EVzioDPf/zbtg86c8mxkhZPiaS+H2jE > Pf3H0hTDtL7YZSKlmevX0u2jiNJFALutgkvCNB8+vZjO2eYdjGEtdsrz4Nxw2Mkv > 46Q8niW75jOovLmnkQj1iMyaG9DljXf76zl1jQyXlKWX97+pV88OQPqYWZOf3rUZ > dNZyyy+7kF0iMLOG1u/F8ufTm0PqXgbWtx4EaSjj7kwUNCxlv/IvuBnxsB4cv8dH > vzsy4hxpRkMMyqmHuXrPIdj24Dk9+vpxJgsZ/X6GsVkrTwrkghBTCTxovhuQq7RM > ZMN4rIVGwSBYE8tKFcM6Rfs/nHhfggvwBKGs7OuKlMoGia5F5bwTZTIRQkiGoWuY > ipLXVhk713eecn/Ftpr0TYA43H+8LlOMgFWhO+u0hcS0y2wi++lHvDFRxamsxz9G > by7sp6DH3twx7I7fT/8zFL+tSD7scIeF8g7f91oW3kX8KV8WJ6YnuLyfSUDHSf+y > n9bM0LvWv9FLfiX2S4dq > =JXYJ > -----END PGP SIGNATURE----- > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp -- -- Regards, -- Brant I. Stevens, Principal & Consulting Architect bra...@argentiumsolutions.com d:212.931.8566, x101. m:917.673.6536. f:917.525.4759. http://argentiumsolutions.com _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp