Hi,
I have big problem with multicast mac with vlan tag. I suspect filtering and droping packet somewhere within VMware.
Set in VMware VLAN = 4095 for SR-IOV. Tests in both as a mode PCI Device and BYPASS mode (through Port Group).
Problem does not occur when the cards are configured in the passthrough mode (no SR-IOV mode).
Multicasts not tagged, pass without a problem (Precison Time Protocol).
Running tcpdump on the side of the sender log:
Frame 1: 144 bytes on wire (1152 bits), 144 bytes captured (1152 bits)
Encapsulation type: Ethernet (1)
Arrival Time: Mar 4, 2018 21:35:15.204041000 Central European Standard Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1520195715.204041000 seconds
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 144 bytes (1152 bits)
Capture Length: 144 bytes (1152 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:vlan:ethertype:sv]
[Coloring Rule Name: Broadcast]
[Coloring Rule String: eth[0] & 1]
Ethernet II, Src: Vmware_51:c4:8e (00:0c:29:51:c4:8e), Dst: Iec-Tc57_04:00:00 (01:0c:cd:04:00:00)
Destination: Iec-Tc57_04:00:00 (01:0c:cd:04:00:00)
Address: Iec-Tc57_04:00:00 (01:0c:cd:04:00:00)
… …0. … … … … = LG bit: Globally unique address (factory default)
… …1 … … … … = IG bit: Group address (multicast/broadcast)
Source: Vmware_51:c4:8e (00:0c:29:51:c4:8e)
Address: Vmware_51:c4:8e (00:0c:29:51:c4:8e)
… …0. … … … … = LG bit: Globally unique address (factory default)
… …0 … … … … = IG bit: Individual address (unicast)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 7, DEI: 0, ID: 4
- … … … = Priority: Network Control (7)
…0 … … … = DEI: Ineligible
… 0000 0000 0100 = ID: 4
Type: IEC 61850/SV (Sampled Value Transmission (0x88ba)
IEC61850 Sampled Values
APPID: 0x4000
Length: 126
Reserved 1: 0x0000 (0)
Reserved 2: 0x0000 (0)
savPdu
noASDU: 1
seqASDU: 1 item
In this document, http://www.mellanox.com/related-docs/prod_software/Mellanox_OFED_ESXi_User_Manual_v2.4.0.pdf http://www.mellanox.com/related-docs/prod_software/Mellanox_OFED_ESXi_User_Manual_v2.4.0.pdf . Point 3.3.1.5 is written:
“Any vlan-tagged packets sent by the VF are silently dropped.”
Configuration:
Server: 3 x Dell PowerEdge R710 rev II (12 CPU - 24 logical, 96GB RAM)
Mellanox Card: 3 x ConnectX-4 Lx EN-MCX4121A-XCAT (latest FW 14.21.2010, PXE 3.5.0305)
Switches: 2 x Cisco Nexus 3048TP-1GE (latest stable firmware 7.0.3.I7.3)
VMware: DellEMC-ESXi-6.5U1-7388607-A07 (latest from Dell)
VM OS: CentOS Linux release 7.4.1708 (Core, updated)
VMware network driver: nmlx5_core (VMware native, 4.16.10.3-1OEM.650.0.0.4598673)
VM OS network driver mlx5_core: 4.2-1.0.1 (latest Linux driver EN)
How to solve the problem, otherwise research does not make much sense.
I am asking for support, it is very important for Me and My thesis, research.
Best Regards,
Robert