08-10-2022 03:54 AM - edited 08-10-2022 07:06 AM
We tried to connect a device to this new switch (to one of the 12p 40G/100G QSFP28) but the port just won't come up. These 40/100G ports already do accept the 10G SFP's but do they even support the 1G SFP?
Details
QSA module: CVR-QSFP-SFP (does support the 1G SFP)
1G SFP: GLC-SX-MMD
NXOS: version 9.3(7)
08-10-2022 06:07 AM
what SFP module you installed and not working, make sure both the side use same optic, setting speed and no negoation also help you.
check QSFP support:
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-9600-series-switches/216743-cvr-qsfp-sfp10g-adapter-usage-and-limita.html
08-10-2022 07:14 AM
Hi BB,
As mentioned we are using a GLC-SX-MMD together with a CVR-QSFP-SFP which is inserted into one of the 40G/100G ports.
Example port configuration
interface Ethernet1/100
no cdp enable
switchport mode trunk
spanning-tree port type edge trunk
spanning-tree bpduguard enable
speed 1000
duplex full
logging event port link-status
logging event port trunk-status
storm-control broadcast level 10.00
storm-control multicast level 10.00
storm-control unicast level 10.00
08-10-2022 09:55 AM
what is other side connected ? have you tried no negotiation.
can you post show interface ethe 1/100 and show interface eth1/100 tan
08-11-2022 11:47 PM
Hi,
I cannot show you the output of these commands as another transceiver (10G) is now inserted.
When i try to configure the speed it even does not show the 1G option, though the switch somehow accepted the command we copied the configuration from the old switch.
switch(config-if)# speed ?
10000 10Gb/s
40000 40Gb/s
Also, we have not tried the 'no negitiation' option as we have to plan a change for this to be executed.
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