The 'ifconfig' / 'netstat' commands show that "TX drops" counter on the interface grows rapidly under load when SecureXL is enabled

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Technical Level

Symptoms

Outputs of 'ifconfig' / 'netstat' commands show that TX drops counter on the interface grows rapidly under load.
Drops on interface under load occur with SecureXL enabled.
SecureXL debug ('sim dbg -m pkt + pkt' and 'sim dbg -m drv + deliver') shows these messages:
[SIM]sim_filterout_do_deliver: can't XMT, queue stopped [SIM]do_inbound_finish: cut-through: XMT FAILED!!! xmt_rc=-1
Note: In R80.20, "fwaccel dbg" replaces "sim dbg."
Kernel debug ('fw ctl debug -m fw + drop') may show the following message:
...dropped by do_inbound_finish, Reason: transmission failed;

Cause

The interfaces are busy and cannot accept packets coming from the SecureXL module.

Solution

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