01-07-2019 05:32 PM - edited 03-08-2019 04:58 PM
I have a C9407 with multiple trunk ports already connected to various Cisco model switches via fiber. C3750, C3750X, & C2960 just to name a few of the models.
We got our first 9500 series switch and the usual configurations are not working with a 1Gig SFP. I pop in a 10Gig SFP, and the link connects right up. Is there some configuration option needed to get 1Gig SFPs to work?
9407: v16.6.4 (Everest)
9500: v16.8.1a (Fuji)
Just for troubleshooting, the only configurations on both ports are "switchport mode trunk" right now.
Solved! Go to Solution.
01-07-2019 09:15 PM
01-07-2019 05:51 PM
Are you receiving any errors in relation to the 1G interface , such as incompatible sfp? , also is the module a sfp+ that supports both 1G and 10G.
To verify if the sfp optical module is being detected by the switch run the sh inventory command , you should have a SN or a name listed in the associated switch port.
01-07-2019 08:09 PM
I'm not seeing any errors on the interface. Each SFP is a single-speed SFP (so only 1Gig or 10Gig). They correctly show in sh inventory.
Each switch has a generic SFP-10G-LR & generic GLC-SX-MMD SFP. The SFP-10G-SR & other GLC-SX-MMD are Cisco SFPs.
9407:
NAME: "TenGigabitEthernet5/0/1", DESCR: "SFP+ 10GBASE-LR"
PID: SFP-10G-LR , VID: , SN: **********NAME: "TenGigabitEthernet5/0/2", DESCR: "SFP+ 10GBASE-SR"
PID: SFP-10G-SR , VID: A , SN:**********NAME: "TenGigabitEthernet5/0/3", DESCR: "GE SX"
PID: GLC-SX-MMD , VID: 001 , SN:**********NAME: "TenGigabitEthernet5/0/4", DESCR: "GE SX"
PID: GLC-SX-MMD , VID: , SN:**********
9500:
NAME: "TwentyFiveGigE1/0/1", DESCR: "SFP+ 10GBASE-LR"
PID: SFP-10G-LR , VID: , SN:**********NAME: "TwentyFiveGigE1/0/3", DESCR: "SFP+ 10GBASE-SR"
PID: SFP-10G-SR , VID: A , SN:**********NAME: "TwentyFiveGigE1/0/5", DESCR: "GE SX"
PID: GLC-SX-MMD , VID: 001 , SN:**********NAME: "TwentyFiveGigE1/0/7", DESCR: "GE SX"
PID: GLC-SX-MMD , VID: , SN:**********
The 10Gig works with no issues. Might be a sign to just make everything 10Gig (not really possible though).
01-07-2019 08:55 PM
01-07-2019 09:15 PM
01-07-2019 10:21 PM
I upgraded the switch to 16.09.02 & that resolved the issue.
01-07-2019 10:58 PM
03-20-2019 11:24 AM
Hi
Could you help me how the issue resolved
I have similar case
03-20-2019 11:28 AM
I have C9500-24Q with the converter (CVR-QSFP-SFP10G) to use 1G SFP
The edge switch is C2960X-24TS-L with normal 1G SFP (GLC-LH-SMD)
I already update the software of C9500 switches to 16.09.02 but the SFP in Edge switch not working
could you advise
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