IEEE 802.3x Pause Frames - Receiving, but not Transmitting

Hi JohnRo,

Thanks for the reply.

My firmware was out-of-date, but I just upgraded it to 11.0.0.18.  I confirmed that the update was successful.  The Web GUI looks slightly different and I was able to re-apply my Flow Control configurations on ports 21 & 22.

I'm still not seeing any Pause frames being transmitted.  Here are some traces from the CLI after running for a while:

(M7100-24X) (Config)#show flowcontrol

        Flow Control   Flow Control   RxPause   TxPause
 Intf   Oper           Mode
------- ------------   ------------   --------  --------
[deleted ports 0/1 thru 0/20]
0/21    Active         Symmetric      0         0
0/22    Active         Symmetric      128010    0
0/23    Active         Symmetric      0         0
0/24    Active         Symmetric      0         0

(M7100-24X) (Config)#show interface counters

Port              InOctets      InUcastPkts      InMcastPkts      InBcastPkts       InDropPkts
--------- ---------------- ---------------- ---------------- ---------------- ----------------
0/21           54534328704             3049                0                0                0
0/22               6057600                0                0                0                0

[0/21 InOctets is very large, InUcastPkts is very small...but InDropPkts=0?]

Port             OutOctets     OutUcastPkts     OutMcastPkts     OutBcastPkts      OutDropPkts
--------- ---------------- ---------------- ---------------- ---------------- ----------------
0/21                 23056                0              164              135                0
0/22           72132066895         33303830              237              205                0

[lots of traffic obviously making it out to 0/22, coming from 0/21]

As a follow-on question, is the Port 21 device required to use Auto-Negotiation to tell the switch that it's capable of symmetric flow control (receiving Pause Frames), or should the Flow Control setting in the Netgear switch be enough to turn on Pause Frame transmission to 0/21?  I'm NOT using Auto-Negotiation in either the Port 21 or Port 22 devices.

Thanks,

tjgoodma