4.20 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

Supported Firmware

mellanox/mlxsw_spectrum-13.1703.4.mfa2 - Available via linux-firmware.

Supported Cables

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

New Features

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

Kernel	Category	Description
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	Increase timeout during firmware flash process	details
mlxsw: spectrum_switchdev	Fix VLAN device deletion via ioctl	details
mlxsw: spectrum_router	Relax GRE decap matching check	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
Chassis management	i2c_mlxcpld should be blacklisted on SN2100; Otherwise, system logs will show warnings
FW automatic upgrade	FW manual upgrade is not supported after driver reload. FW is updated only based on in-driver FW version. Option is now available in 5.0