Configure Speed on the QSFP+ Interfaces
All the QSFP ports on the switch can provide 40/10/1 Gbps connectivity. The default mode of a QSFP port is 4x10Gbps. You can configure the port for 40Gbps or 1 Gbps operation from the SEFOS CLI.
When changing speed from 40Gbps to 10Gbps/1Gbps or from 1Gbps/10Gbps to 40Gbps, change the admin state explicitly to UP after you change the speed.
For 40Gbps operation, only the head ports of the QSFP interfaces, extreme-ethernet 0/1, 5, 9, 13, 17, 21 (for ES2-R64) and extreme-ethernet 0/1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69 (for ES2-R72), need to be configured. See the example below.
When the speed of a port is changed to 40Gbps, only the head port remains visible.
 | Caution - All QSFP ports operate in Forced mode. You must disable autonegotiation on the link-partner. |
- Obtain the SEFOS prompt.
- Configure the speed to 40 Gbps.
For example, to configure ports 5 and 21:
ES2-72-primary SEFOS# configure terminal ES2-72-primary SEFOS(config)# int extreme-ethernet 0/5 ES2-72-primary SEFOS(config-if)# speed 40000 % Port state will be admin down during speed change during 10G to 40G or 40G to 10G or 40G to 1G ES2-72-primary SEFOS(config-if)# no shutdown ES2-72-primary SEFOS(config-if)# exit ES2-72-primary SEFOS(config)# int extreme-ethernet 0/21 ES2-72-primary SEFOS(config-if)# speed 40000 % Port state will be admin down during speed change during 10G to 40G or 40G to 10G or 40G to 1G ES2-72-primary SEFOS(config-if)# no shutdown ES2-72-primary SEFOS(config-if)# exit ES2-72-primary SEFOS(config)# end ES2-72-primary SEFOS# write startup-config ES2-72-primary SEFOS# sh interface status Port Status Duplex Speed Negotiation ---- ------ ------ ----- ----------- Ex0/1 not connected Full 10 Gbps No-Negotiation Ex0/2 not connected Full 10 Gbps No-Negotiation Ex0/3 not connected Full 10 Gbps No-Negotiation Ex0/4 not connected Full 10 Gbps No-Negotiation Ex0/5 not connected Full 40 Gbps No-Negotiation Ex0/9 not connected Full 10 Gbps No-Negotiation Ex0/10 not connected Full 10 Gbps No-Negotiation Ex0/11 not connected Full 10 Gbps No-Negotiation Ex0/12 not connected Full 10 Gbps No-Negotiation Ex0/13 not connected Full 10 Gbps No-Negotiation Ex0/14 not connected Full 10 Gbps No-Negotiation Ex0/15 not connected Full 10 Gbps No-Negotiation Ex0/16 not connected Full 10 Gbps No-Negotiation Ex0/17 not connected Full 10 Gbps No-Negotiation Ex0/18 not connected Full 10 Gbps No-Negotiation Ex0/19 not connected Full 10 Gbps No-Negotiation Ex0/20 not connected Full 10 Gbps No-Negotiation Ex0/21 not connected Full 40 Gbps No-Negotiation
- Configure the speed from 40Gbps to 10 Gbps or 1Gbps.
For example, to configure port 5 to 1Gbps and port 21 to 10Gbps:
ES2-72-primary SEFOS# configure terminal ES2-72-primary SEFOS(config)# interface extreme-ethernet 0/5 ES2-72-primary SEFOS(config-if)# speed 10000 <---- Change to 10000 first % Port state will be admin down during speed change during 10G to 40G or 40G to 10G or 40G to 1G ES2-72-primary SEFOS(config-if)# speed 1000 ES2-72-primary SEFOS(config-if)# no shutdown ES2-72-primary SEFOS(config-if)# ex ES2-72-primary SEFOS(config)# interface extreme-ethernet 0/21 ES2-72-primary SEFOS(config-if)# speed 10000 % Port state will be admin down during speed change during 10G to 40G or 40G to 10G or 40G to 1G ES2-72-primary SEFOS(config-if)# no shutdown ES2-72-primary SEFOS(config-if)# end ES2-72-primary SEFOS# write startup-config ES2-72-primary SEFOS# show interface status Port Status Duplex Speed Negotiation ---- ------ ------ ----- ----------- Ex0/1 not connected Full 10 Gbps No-Negotiation Ex0/2 not connected Full 10 Gbps No-Negotiation Ex0/3 not connected Full 10 Gbps No-Negotiation Ex0/4 not connected Full 10 Gbps No-Negotiation Ex0/5 not connected Full 1 Gbps No-Negotiation Ex0/6 not connected Full 10 Gbps No-Negotiation Ex0/7 not connected Full 10 Gbps No-Negotiation Ex0/8 not connected Full 10 Gbps No-Negotiation Ex0/9 not connected Full 10 Gbps No-Negotiation Ex0/10 not connected Full 10 Gbps No-Negotiation Ex0/11 not connected Full 10 Gbps No-Negotiation Ex0/12 not connected Full 10 Gbps No-Negotiation Ex0/13 not connected Full 10 Gbps No-Negotiation Ex0/14 not connected Full 10 Gbps No-Negotiation Ex0/15 not connected Full 10 Gbps No-Negotiation Ex0/16 not connected Full 10 Gbps No-Negotiation Ex0/17 not connected Full 10 Gbps No-Negotiation Ex0/18 not connected Full 10 Gbps No-Negotiation Ex0/19 not connected Full 10 Gbps No-Negotiation Ex0/20 not connected Full 10 Gbps No-Negotiation Ex0/21 not connected Full 10 Gbps No-Negotiation Ex0/22 not connected Full 10 Gbps No-Negotiation Ex0/23 not connected Full 10 Gbps No-Negotiation Ex0/24 not connected Full 10 Gbps No-Negotiation