HP Mellanox SX1018 Mellanox MLNX-OS® Release Notesfor SX1018HP Ethern - Page 9

Ethernet Known Issues, Sheet 1 of 3

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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 Replace copper cable with experience link rise issues when connected to fiber cable some 3rd party 40GbE interfaces. 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- Use a different admin-key lished with some third party vendors. number. 8. LAG Traffic running over LAG may not be evenly distributed when testing small number of SMACs. 9. LAG When converting static LAG to dynamic LAG Disable and enable the (LACP), some of the ports remain in DOWN state. LAG. 10. LAG LAG Hash function lacks configuration of a randomization 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 workaround is applicable in case there are multiple mixed flows. 11. LAG When removing all ports of a port-channel and Disable and enable the port- then re-adding them to the port-channel in a differ- channel. ent type, port-channel may not converge. 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. Mellanox Technologies 9 Mellanox® Technologies Confidential

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Mellanox Technologies
9
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.
Mellanox® Technologies Confidential