This article describes the issue of being unable to disable the flow-control on a SRX branch or J-series device's interface.

When trying to configure the no-flow-control under edit interface > interface-name > gigether-options , the device does not show the option to configure:

[edit]
admin@h1# run show version
Hostname: SRX
Model: srx210h
JUNOS Software Release [11.2R1.10]

[edit]
admin@h1# set interfaces ge-0/0/0 gigether-options ?

> 802.3ad IEEE 802.3ad
+ apply-groups Groups from which to inherit configuration data
+ apply-groups-except Don't inherit configuration data from these groups
> auto-negotiation Enable auto-negotiation
ignore-l3-incompletes Ignore L3 incomplete errors
loopback Enable loopback
> mpls MPLS options
no-auto-negotiation Disable auto-negotiation
no-loopback Don't enable loopback
> redundant-parent Parent of this interface

Currently, Ethernet flow control is not supported on J-series and SRX branch devices. As it is not supported and is by default disabled, disabling flow control via the edit interface > interface-name > gigether-options configuration is not possible.

Note : Ethernet flow control is available on SRX high-end devices.