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
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Thomas Bellman <mailto:bell...@nsc.liu.se>
June 21, 2017 at 6:28 PM
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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!
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--
--
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
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