10-03-2017 12:26 PM - edited 03-01-2019 08:38 AM
Dears
we purchased Cisco Nexus 31108TC-V Switch with CVR-QSFP-SFP10G adapters to convert 40G into 10G, also i ordered 4 nos SFP+ LR (10Gbase-LR) which will be inserted in the CVR-QSFP-SFP10G adapters for connecting to servers.
I have 2 small simple question and a doubt
By the below output i can see that i can use either of them but i want to use 10G as a breakout so i will choose portmode (48x10g+4x100g+2x40g ) but according to the attached it is port-mode 2, Please confirm is it correct
switch(config)# hardware profile portmode ?
48x10g+4x100g+2x40g Line rate cut through mode
48x10g+6x100g 48x10G+6x100G oversubscribed port mode
Question II:
If have done the breakout by the command interface breakout module 1 port 53 map 10g-4x this has created multiple interface as 1/53/1, 1/53/2,1/53/3,1/53,4 only 1 port will be used from the parent interface i.e 1/53/1 in my case becz i will be connecting from SFP+ LR (10Gbase-LR) which will be inserted in CVR-QSFP-SFP10G adapter connecting to the server, Ifincase i would have a DAC cable then i would have used other ports as well 1/53/2,1/53/3,1/53/4 from that QSFP, so on this port only 1 server will be connected and for other 3 servers i will connect on 1/51/1 and 1/52/1,1/54/1 ,,
please correct me if i m wrong.
thanks
Thannks
Solved! Go to Solution.
10-04-2017 02:19 PM
That is correct. Please remember that LR stands for Long Reach witch is Single-Mode fiber.
Please see the attached picture.
10-03-2017 04:34 PM
10-04-2017 02:02 PM
Dears,
I got the key thing,
To use SFP+ 10 LR we have to use the same breakthroguh command interface breakout module 1 port 53 map 10g-4x this will connecte single SFP to the server leaving the other three ports free and if i would have DAC cable i would have used all the four but inetead i m usiing the normal LC-LC fiber cable.
Thanks
10-04-2017 02:19 PM
That is correct. Please remember that LR stands for Long Reach witch is Single-Mode fiber.
Please see the attached picture.
10-10-2017 01:13 PM
Dears,
I am using port mode 2 as per the attched , in which i can get 4X 100G/40G ( which can be breakout 10X4) +2X40G=10X4 breakout ,
when i try to breakout port 49 into 10GX4 it breaksout the command is accepted but when i connect it doesnt come up i am connecting through a cable SFP-H10GB-CU5M= , the same cable when it is use for port 54 with a breakout command it works fine.
Anybody can help to understand what can be the issue
Thanks
10-10-2017 02:25 PM
10-10-2017 02:27 PM
10-15-2017 06:36 AM
Dears,
I want to update the thread of the post , i reloaded the switch and the interface come up this is becz i think i entered the breakout commnad for port 49 and then revert it back after that i again entered the command and it didnt worked
so before reloading i entered no interface breakout command for the port and reloaded the switch when the switch came up then again i entered the interface breakout command for the port and the all the 4 interfaces were up.
strange is that no logs in the buffer when i do sh logging i dont see any error logs
10-15-2017 09:25 AM
Well I’m just glad you where able to get it working. What command did you use for the breakout?
10-24-2017 11:28 AM
Dear Rick,
no interface breakout module 1 port 49 map 10G-4X and then i rebooted, after rebooting i applied the below command interface breakout module 1 port 49 map 10G-4X,
I think some NX-OS glitch
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