On the Dell S5248F switch, the 2x200G QSFP-DD interfaces labeled 49/50 and 51/52 are not supported natively at 200G speeds. The interfaces are supported with 100G cables; however, you can only use one 100G cable from each QSFP-DD port. The upper QSFP-DD port is named swp49 and the lower QSFP-DD port is named swp52.
QSFP+ Ports on the Dell S4148T Switch
On the Dell S4148T switch, the two QSFP+ ports are set to
disabled by default and the four QSFP28 ports are configured for 100G. The following example shows the default settings in the
/etc/cumulus/ports.conf file for this switch:
cumulus@switch:~$ sudo cat /etc/cumulus/ports.conf ... # QSFP+ ports # # <port label 27-28> = [4x10G|40G] 27=disabled 28=disabled # QSFP28 ports # # <port label 25-26, 29-30> = [4x10G|4x25G|2x50G|40G|50G|100G] 25=100G 26=100G 29=100G 30=100G
To enable the two QSFP+ ports, you must configure all four QSFP28 ports for either 40G or 4x10G. You cannot use either of the QSFP+ ports if any of the QSFP28 ports are configured for 100G.
The following example shows the
/etc/cumulus/ports.conf file with all four QSFP28 ports configured for 40G and both QSFP+ ports enabled:
cumulus@switch:~$ sudo cat /etc/cumulus/ports.conf ... # QSFP+ ports # # <port label 27-28> = [4x10G|40G] 27=40G 28=40G # QSFP28 ports # # <port label 25-26, 29-30> = [4x10G|4x25G|2x50G|40G|50G|100G] 25=40G 26=40G 29=40G 30=40G
To disable the QSFP+ ports, you must set the ports to
Link Speed on the EdgeCore AS7326-56X Switch
On the EdgeCore AS7326-56X switch, all four switch ports in each port group must be set to the same link speed; otherwise, the links do not come up. These ports are set to 25G by default, but can also be set to 10G. The port groups on this switch are as follows, where each row is a port group:
- 1 2 3 6*
- 4 5 7* 9
- 8 10 11* 12
- 13 14 15 18*
- 16 17 19* 21
- 20 22 23* 24
- 25 26 27 30*
- 28 29 31* 33
- 32 34 35* 36
- 37 38 39 42*
- 40* 41 43 45
- 44* 46 47 48
For example, if you configure port 19 for 10G, you must also configure ports 16, 17 and 21 for 10G.
Additionally, you can gang each port group together as a 100G or 40G port. When ganged together, one port (based on the arrangement of the ports) is designated as the gang leader. This port's number is used to configure the ganged ports and is marked with an asterisk ( * ) above.
ethtool Shows Incorrect Port Speed on 100G Mellanox Switches