5.4 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
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. mlxsw driver enforces this version

Spectrum-2 mellanox/mlxsw_spectrum-29.2000.2714. mlxsw driver does not enforce this version. It should be updated manually

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 4.19 please visit 5.2 release notes page.

Kernel	Category	Description
5.4	Packet drops monitoring: layer 2
	CPU port's shared buffer occupancy monitoring
5.3	Spectrum-2 SN3700 GA	Fully certified SN3700
	PTP	Add support for PTP (Spectrum only)
	ACL match on ingress device	Add support for new key: match on ingress
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

Fixed Issues

Category	Description	Commit info
mlxsw: spectrum_flower	Fail in case user specifies multiple mirror actions	details
mlxsw: core	Unpublish devlink parameters during reload	details
mlxsw: spectrum_router	Fix determining underlay for a GRE tunnel	details
devlink	Disallow reload operation during device cleanup	details

SN3700/SN3700C Supported Speeds

Speed [GbE]	AutoNeg NO FEC	Force RS FEC	Force NO FEC	Cable	Cable Length (m)	Link up time (sec)	Limitations
1	+	-	+	Optic	Up to 100	1	Base T1 modules are not supported
1	+	-	+	Copper	Up to 5	1	Base T1 modules are not supported
10/40	-	-	+	Optic	Up to 100	30	10/40GbE per port runs only in NO-FEC and Force mode (ignores user configuration)
10/40	-	-	+	Copper	Up to 3	30	10/40GbE per port runs only in NO-FEC and Force mode (ignores user configuration)
25	-	+	-	Optic	Up to 100	40	25GbE per port runs only in RS-FEC and Force mode (ignores user configuration). LR modules are supported only when the device supports RS-FEC with these modules
25	-	+	-	Copper	Up to 5	40	25GbE per port runs only in RS-FEC and Force mode (ignores user configuration). LR modules are supported only when the device supports RS-FEC with these modules
50	-	+	-	Optic	Up to 100	40	50GbE per port runs only in RS-FEC and Force mode (ignores user configuration)
50	-	+	-	Copper	Up to 5	40	50GbE per port runs only in RS-FEC and Force mode (ignores user configuration)
100	-	+	-	Optic	Up to 100	40	100GbE per port runs only in RS FEC and Force mode (ignores user configuration). LR4/BiDi/SWDM4 modules are supported only when the device supports RS-FEC with these modules
100	-	+	-	Copper	Up to 100	40	100GbE per port runs only in RS FEC and Force mode (ignores user configuration). LR4/BiDi/SWDM4 modules are supported only when the device supports RS-FEC with these modules
200	-	+	-	Optic	Up to 30	60	Mellanox to Mellanox only
200	-	+	-	Copper	Up to 2	60	Mellanox to Mellanox only

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"
FRR	FRR 7.3+ installs routes using nexthop objects which are not supported by mlxsw, causing it to reject the routes. This can be fixed by the command no zebra nexthop kernel enable. See this ticket for more details
Routing	When deleting an IP neighbour from user space, the neighbour transitions to FAILED state instead of being deleted completely. The neighbour is correctly deleted from the hardware data path and not marked with offload keyword. It can be deleted completely by issuing the deletion command again