Mellanox MLNX-OS® Release Notesfor SX1018HP Ethernet Managed Blade Switch

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4.2 Ethernet Known Issues
Table 5 - Ethernet Known Issues (Sheet 1 of 3)
Index Category Description Possible Workaround
1. Ethernet Interfaces The system allows tolerance of 4 bytes on top of
the set MTU.
2.
Ethernet Interfaces In case of faulty cable, rise time of other interfaces
in the system may be delayed.
3. Ethernet Interfaces 40GbE passive copper cable of 5m length might
experience link rise issues when connected to
some 3rd party 40GbE interfaces.
Replace copper cable with
fiber cable
4. Ethernet Interfaces Default MTU is modified as 1500 instead of 1522.
5. Ethernet Interfaces There are no port counters for packet sizes 1518-
1522.
6. LAG Convergence time of port removal from a LAG
exceeds the specification by up to 30 seconds.
Shut down the port prior of
removing it from the LAG.
7. LAG The remote LACP admin-key #1 cannot be estab-
lished with some third party vendors.
Use a different admin-key
number.
8. LAG Traffic running over LAG may not be evenly dis-
tributed when testing small number of SMACs.
9. LAG When converting static LAG to dynamic LAG
(LACP), some of the ports remain in DOWN state.
Disable and enable the
LAG.
10. LAG LAG Hash function lacks configuration of a ran-
domization seed parameter. Traffic passed over
LAG in hierarchy topology via multiple SwitchX
based systems is not distributed evenly.
Change the distribution
function between layers per-
forming LAG using the
command
port-channel
load-balance
. The work-
around is applicable in case
there are multiple mixed
flows.
11. LAG When removing all ports of a port-channel and
then re-adding them to the port-channel in a differ-
ent type, port-channel may not converge.
Disable and enable the port-
channel.
12. LAG The following LACP port-states are not available
in MLNX-OS®:
• I – Individual H – hot-standby (LACP only)
• s – Suspended R – module-removed
13. VLAN It might take approximately 20 seconds to create/
delete 1000 VLANs, or to change the switchport
mode of an interface.
14. VLAN Deleting VLAN ranges on trunk/hybrid ports is
correlated to the number of the trunk/hybrid ports
in the system.
Restrict the range of
VLANs deleted to groups of
up to a 100 VLANs.
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