Hello.
We need to connect server PCIe card XL710-QDA2 QSFP ports to switch CRS326-24S+2Q in 40G mode.
We connected with DAC QSFP cable - link dont go up. Logs are empty.
We try various modes qsfpplus1-1 as discribe in https://help.mikrotik.com/docs/display/ROS/MikroTik+wired+interface+compatibility
without success:
/interface ethernet set qsfpplus1-1 auto-negotiation=yes
/interface ethernet set qsfpplus1-1 auto-negotiation=no speed=40G-baseCR4
Various SFP FEC modes also try.
Also we try to connect CRS326-24S+2Q to another CRS326-24S+2Q in auto-negotiation=yes mode without problems, so ports and cable are working.
On server side we try to upgrade firmware and drivers - without success.
Also we connected server QSFP to Juniper QFX5100 in 40G mode without problems, so servers card and DAC cable are working./
We think that problem is with Mikrotik configuration.
What can we try to config?
CRS326-24S+2Q firmware is 7.14.3.
Support file attached.
Port config:
/interface/ethernet> print detail where name=qsfpplus1-1
Flags: X - disabled, R - running; S - slave
0 S name="qsfpplus1-1" default-name="qsfpplus1-1" mtu=1500 l2mtu=1584 mac-address=D4:01:C3:40:98:D3 orig-mac-address=D4:01:C3:40:98:D3 arp=enabled arp-timeout=auto loop-protect=default
loop-protect-status=off loop-protect-send-interval=5s loop-protect-disable-time=5m auto-negotiation=yes
advertise=10M-baseT-half,10M-baseT-full,100M-baseT-half,100M-baseT-full,1G-baseT-half,1G-baseT-full,1G-baseX,2.5G-baseT,2.5G-baseX,5G-baseT,10G-baseT,10G-baseSR-LR,10G-baseCR,40G-baseSR4-
LR4,40G-baseCR4
tx-flow-control=off rx-flow-control=off bandwidth=unlimited/unlimited switch=switch1 sfp-rate-select=high fec-mode=auto sfp-shutdown-temperature=80C