03-16-2018 07:33 AM - edited 03-08-2019 02:17 PM
Dear all,
I tried to enable flow-control on my interface but from a "show interface" it show me that is not supported.
Here my configuration :
interface GigabitEthernet1/0/48
switchport access vlan 51
switchport mode access
flowcontrol receive on
spanning-tree portfast
and the output of a "show interface gi1/0/48"
MTU 9198 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 7/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
I can't find issue related to this IOS version. Has anybone meet this type of problem ?
Thanks
03-16-2018 08:00 AM
Hi
That is a normal/default behavior for 3650, 3850 and other small switches.
input flow-control is off, output flow-control is unsupported
HTH
03-16-2018 08:13 AM
Hi Reza,
So flow control is enabled correctly but is normal that is see "output flow-control is unsupported " ?
Thanks
03-16-2018 08:29 AM
Hi,
Yes, that is correct. output flow-control is unsupported on these switches.
I know it is supported on the Nexus series.
HTH
03-16-2018 08:47 AM
03-16-2018 09:21 AM
Hello Joseph,
Yes I know what is mean, but I don't inderstand why I have the possibility to configure the port with flow-control and in reality is not enabled ?
Thanks
03-16-2018 09:56 AM
03-16-2018 11:15 AM
I have only seen flow control changes in server and storage environments, and I think that is the reason you can change that on the Nexus series switches.
HTH
03-22-2018 12:33 PM
Dell has impose us to activate flow-control and I'm little bit frustrated about this problem.
Do you know if is an IOS problem ?
Thanks for your help
03-22-2018 12:57 PM
No, this is not an IOS issue. The platform does not support it. I have seen dell suggesting that for Nexus platform before but flow control change usually does not help. You may want to open a ticket with Cisco to see if they support it in any IOS version and try it.
HTH
03-30-2018 02:28 AM
Just for your information, according Cisco page "Cisco feature Navigator"flowcontrol is supported on version 16.6.1 but in reality is not supported because after upgrade our switches flowcontrol it seem's not activated.
Thank you Cisco
06-14-2018 04:04 AM
please check the below bug:
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCve92821/?reffering_site=dumpcr
basically the feature was broken so they submitted this bug.
06-18-2018 11:45 PM - edited 06-18-2018 11:47 PM
Hi .
3650 version 03.07.05E has the same Bug....
show int gigabitEthernet 2/0/45 flowcontrol
Port Send FlowControl Receive FlowControl RxPause TxPause
admin oper admin oper
--------- -------- -------- -------- -------- ------- -------
Gi2/0/45 Unsupp. Unsupp. on off 0 0
06-19-2018 12:09 AM - edited 06-19-2018 12:10 AM
yes! basically it is not software dependent, it depends on the platform so what it says overall that 3650/3850 have this limitation despite which software they are running :)
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