Mellanox Technologies Mellanox SX1018 Release Note page 10

Table 5 - Ethernet Known Issues (Sheet 2 of 3)
Index Category
15. VLAN
16. Spanning Tree
17. IGMP Snooping
18. IGMP Snooping
19. LLDP
20. LLDP
21. ACLs
22. ACLs
23. Modules
24. Modules
Description
When working with more than 2000 VLANs and
trying to change a port's VLAN membership in
modes hybrid/trunk using the command inter-
face 1/x switchport trunk allowed-vlan,
the operation may timeout on account of it being
too heavy. Thus, the port does not become prop-
erly configured as a member of those VLANs.
Assuming port 1 is in trunk mode and there are
3000 VLANs created, a good practice would be to
achieve membership of port 1 in VLANs 100-
3000, use the command interface ethernet
1/x switchport trunk allowed-vlan remove
1-100 instead of interface ethernet 1/x
switchport trunk allowed-vlan 100-3000.
Non-standard behavior may occur on third party
switch STP functionality when the port moves
from Root to Alternate state. The standard Pro-
posal-Agreement sent by MLNX-OS is unan-
swered which may result in traffic loss of up to 30
seconds.
Setting the ip igmp snooping unregistered
multicast option to forward-to-mrouter-
ports option reduces the amount of supported
VLANs to 250.
There is no possibility to have more than one
mrouter port on a single VLAN if igmp snooping
is disabled for that vlan
LLDP notifications are not supported.
The mgmt0, mgmt1 IPv6 addresses and the in-
band management address are not advertised on
LLDP TLV(s).
A mask of IPv4 ACL rule can contain either 255
or 0 in any of the 4 bytes assembling it.
Packets dropped by the switch due to congestion
or ACL rules are added to the bad type counter of
the matching VLAN interface.
When using 5m splitter cable (P/N MC2609125-
005), wrong data is displayed under transceiver
information.
Using 1GbE copper modules leads to the port sta-
tus being constantly reported as active regardless
from the actual link state.
Mellanox® Technologies Confidential
Possible Workaround
To fix the problem, run the
commands interface
ethernet 1/x switch-
port trunk allowed-
vlan all and interface
ethernet 1/x switch-
port trunk allowed-
vlan remove 1-100 in
succession.
After enabling igmp snoop-
ing on that VLAN, the user
needs to add again the
mrouter-ports on that
VLAN.
Mellanox Technologies 10