5.2 Release notes

Table of Contents

1. Supported Platforms
2. Supported Firmware
3. Supported Cables
4. New Features
5. Fixed Issues
6. Known Issues

Supported Platforms

Product	Description
Mellanox SN2700, SN2740	SpectrumTM based 100GbE 1U Open Ethernet Switch with, 32 QSFP28 ports
Mellanox SN2410	SpectrumTM based 25GbE/100GbE 1U Open Ethernet Switch, 48 SFP28 ports, 8 QSFP28 ports
Mellanox SN2100	SpectrumTM based 100GbE 1U Open Ethernet switch, 16 QSFP28 ports
Mellanox SN2010	SpectrumTM based 25GbE/100GbE 1U Open Ethernet Switch, 18 SFP28 ports, 4 QSFP28 ports
Mellanox SN3700	Spectrum-2TM based 200GbE 1U Open Ethernet switch, 32 QSFP28 ports Beta
Mellanox SN3700C	Spectrum-2TM based 100GbE 1U Open Ethernet switch, 32 QSFP28 ports

Supported Firmware

Spectrum mellanox/mlxsw_spectrum-13.2000.1122 - Available via linux-firmware.

Spectrum-2 - Available on demand. In-driver FW update is not yet enabled, thus manual FW update is required.

Supported Cables

For a list of the Mellanox supported cables please visit the LinkX^TM Cables and Transceivers page.

New Features

NOTE: For releases earlier than 4.9 please visit 4.18 release notes page.

Kernel	Category	Description
5.2	Spectrum-2 SN3700C GA	Fully certified SN3700C
5.1	Spectrum-2 GRE	Add support for GRE
	Spectrum-2 QoS	Add support for QoS
	VXLAN	Add VXLAN support for Spectrum-2 as well as FDB vetoing for both
	HW discard counters	Add additional HW discard counters to ethtool
	devlink dev info	Add new devlink info command to show ASIC revision, platform PSID and running FW version
5.0	One-armed router support	Add support to disable ICMP redirect generation
	VXLAN with VLAN-aware bridges support	VXLAN with VLAN-aware bridges support
	VXLAN router support	Add support for VXLAN routing
	Add hock Firmware upgrade support	Add support for ad hock Firmware version overriding the in-driver automatic Firmware upgrade
	Spectrum-2 MC router	Add support for IPv4/6 Multicast router
4.20	QoS MC-awarness	Add support for dedicated pool for BUM traffic
	VXLAN support	VXLAN with VLAN-unaware bridges support
4.19	VRRP	Support of Virtual Router Redundancy Protocol
	TC chain templates	Allow user to specify a template that would cover all the filters to be inserted in the chain
	Spectrum-2 support	Initial support for Spectrum-2: basic L2, L3 and ACLs
	QoS	Trust-DSCP and DSCP rewrite
	Counters	Include RFC-2819 counters in stats length
	FW Auto upgrade	Always bump required firmware version
4.18	SPAN	ERSPAN mirroring with bridge, VLAN or LAG in underlay
4.17	QoS	Allow grafting of RED as a child of PRIO (providing per QoS RED/ECN)
	L3 Routing	IPv6 multicast routing
	SPAN	Support mirroring via GRE tunnel (ERSPAN)
	L2 switching	Physical ports in VLAN-unaware bridges support
4.16	L3 Routing	Weighted multipath for IPv6
	QoS	Offload support for PRIO queueing discipline
	SPAN	flow-based mirroring
4.15	L3 Routing	IPv4 multicast routing
	L3 Routing	Weighted multipath for IPv4
	L3 Routing	Allow user control of IPv4 multpath hash policy
	QoS	Offload support for RED queueing discipline
	L3 Tunneling	GRE support for decap-only tunnels
	L3 Tunneling	GRE configuration changes supported (see limitations)
4.14	L3 Routing	Add support for IPv6 unicast routing
	ACL keys	Match on IP TTL and TOS
	ACL actions	Support moving to different chains (tables)
	L3 Tunneling	Preliminary support for GRE tunnels (see limitations)
4.13	ACL keys	Match on TCP flags
	ACL actions	Trap support
	Chassis management	Firmware flashing support
	Chassis management	Port module [transceiver] info
4.12	ACL keys	VLAN-ID, PCP, DCSP support
	ACL Infrastructure	Added counters support
	L3 Routing	Enabled 256 VRFs
	Visibility	Added RIF counters
4.11	ACL infra	Added 'tc-flower' offloading for ACLs
	ACL keys	Port, DMAC, SMAC, Ethertype, IP proto, SIP DIP (IPv4/6), TCP/UDP, L4 port
	ACL actions	DROP, Forward
	IP multicast	IGMP flooding enhancements
	Visibility	sFlow
4.10	QoS	CPU policers support
4.9	L3 routing	L3 router performance enhancements
	Chassis management	I2C driver added for Mellanox SpectrumTM switch systems

Fixed Issues

Category	Description	Commit info
mlxsw: core	Prevent QSFP module initialization for old hardware	details
mlxsw: core	Prevent reading unsupported slave address from SFP EEPROM	details
mlxsw: spectrum_acl	Avoid warning after identical rules insertion	details
mlxsw: spectrum	Prevent force of 56G	details
mlxsw: spectrum_router	Refresh nexthop neighbour when it becomes dead	details
mlxsw: spectrum_flower	Fix TOS matching	details
mlxsw: spectrum_buffers	Reduce pool size on Spectrum-2	details
mlxsw: spectrum	Disallow prio-tagged packets when PVID is removed	details
mlxsw: spectrum_dcb	Configure DSCP map as the last rule is removed	details
mlxsw: spectrum	Do not process learned records with a dummy FID	details

Known Issues

Category	Description
Network configuration	Order of operations: Network configuration should be done bottom-up, teardown should be done top-down
ACL	ACL key size: Rules that match on L2 fields and the complete IPv6 header cannot be specified
FW automatic upgrade	Spectrum-2 in-driver firmware upgrade is not supported. See manual instructions Firmware upgrade
Multicast snooping	MDB records mapped to the same multicast MAC will share the same MDB record in the device. Deleting such records from the bridge driver will result in the following error being printed to the kernel log: "Unable to remove port from MC DB"