Cumulus Linux 5.2 Release Notes

Download 5.2 Release Notes xls    Download all 5.2 release notes as .xls

5.2.1 Release Notes

Open Issues in 5.2.1

Issue IDDescriptionAffectsFixed
3209895
When performing “tcpdump -i swpX” for an L3, IPv6 enabled port the switch will generate 4 IPv6 Router Advertisements when tcpdump is started, and when it finishes, for a total of 8 IPv6 RA packets transmitted.4.4.4-4.4.5, 5.0.1-5.2.1
3205859
Switch fans run at very high speed but the temperature is normal.5.2.0-5.2.1
3202991
Locally generated multicast traffic including IGMPv2 GSQs do not transmit to local clients when using PIM.5.0.1-5.2.1
3202401
The ethtool -m command and the NVUE nv show interface pluggable command do not show the VPD for optical modules and AOCs (OUI, vendor name, part number, or revision serial number).5.2.0-5.2.1
3196774
In an EVPN configuration, after closing a BGP session on an EVPN peer, the VTEP RMAC is deleted and the hosts loose reachability to each other. To work around this issue, restart FRR or add a static RMAC entry to bridge FDB.5.2.0-5.2.1
3192808
None
When the switch receives an LLDP frame from a Cisco router right after a ptmd restart, the ptmd service crashes.4.3.0-4.4.5, 5.0.0-5.2.1
3188576
IPv6 messages fill the /var/log/frr/frr.log files and logrotate]] is unable to clean up the old log files. As a result, a significant number of log files are never deleted, which fill up the file system.5.2.0-5.2.1
3180043
The EVPN Multihoming ESI configuration command nv set interface evpn multihoming segment identifier does not work.5.1.0-5.2.1
3176318
The NVUE nv set bridge domain br_default stp priority command does not change the STP priority.5.1.0-5.2.1
3174706
When the ingress PTP port receiving PTP messages is an SVI and STP has set the port to either alternate or backup, ingress PTP messages are dropped.5.1.0-5.2.1
3172504
When you connect the NVIDIA SN4600C switch to a Spectrum-1 or Spectrum-3 switch with a 40GbE passive copper cable (Part Number: MC2210126-005) on edge ports 1-4, and 61-64, there is an Effective BER of 1E-12 in PHY.5.2.0-5.2.1
3166746
FRR does not install EVPN type-2 routes correctly after the specific operation that deletes and adds all non-uplink ports. The routes show as rejected in the zebra RIB. To work around this problem, restart FRR with the sudo systemctl restart frr command.5.1.0-5.2.1
3159756
When adding a member port to a bond you sometimes see an error. The error occurs if you configure a port as double tagged, then you remove the double tagged configuration and add the port as a bond member. You might not see the error as it depends on timing of interface events during double tagged interface creation. To work around this issue, remove the bond configuration and add it back again.5.2.0-5.2.1
3150317
During a host failure where link remains up but LACP stops being sent, the EVPN multihoming ES bond goes into bypass mode active without a linkstate change.4.4.2-4.4.5, 5.1.0-5.2.1
3150208
When a ZTP script executes a switchd restart, the switchd service might fail with the following log message:
switchd[11549]: hal.c:1378 CRIT No backends found
To work around this issue, avoid restarting the switchd service in the ZTP script; reboot the switch instead.
5.1.0-5.2.1
3148995
On the Spectrum-1 switch, PTP time distribution might deviate more than 20 nanoseconds from the master on interfaces with speeds of 50 Gbps and below.5.2.0-5.2.1
3145224
If you disable the NVUE service, the /etc/cumulus/datapath/nvue_traffic.conf file does not delete automatically, which prevents ECMP and LAG hash settings in the /etc/cumulus/datapath/traffic.conf file from taking effect. To work around this issue, delete the nvue_traffic.conf file with the sudo rm /etc/cumulus/datapath/nvue_traffic.conf command.5.2.0-5.2.1
3145222
The NVUE nv show system forwarding –output json command does not provide any output. To work around this issue, run the nv show system forwarding command.5.2.0-5.2.1
3145204
On the NVIDIA Spectum-1 switch, the nv show system forwarding command shows GTP hashing output, which is not supported on this switch.5.2.0-5.2.1
3139164
NVUE does not allow you to set 2X/4X lanes. To work around this issue, set the appropriate lanes for forced speed with the ethtool -s swpX speed <port_speed> autoneg off lanes <no_of_lanes> command. For example, ethtool -s swp1 speed 100000 autoneg off lanes 2.5.2.0-5.2.1
3138057
When the next-hop interface for EVPN type 5 routes flaps, FRR might uninstall the routes and Route install failed appears in /var/log/frr/frr.log. To work around this problem, restart FRR with the sudo systemctl restart frr command.4.4.0-4.4.5, 5.0.0-5.2.1
3136303
In Cumulus Linux 5.2 and later, WJH can monitor the buffer channel by default in addition to the layer 1, layer 2, layer 3, ACL, and tunnel channels.5.2.0-5.2.1
3135952
PAM4 split cables (such as 2x100G, 4x100G, and 4x50G) do not work with a forced speed setting (when auto-negotiation is off) as the default speed enabled is for NRZ mode (such as 100G_4X). To work around this issue, set the appropriate lanes for forced speed (with auto-negotation off) with the ethtool -s swpX speed <port_speed> autoneg off lanes <no_of_lanes> command. For example:
ethtool -s swp1 speed 100000 autoneg off lanes 2
5.2.0-5.2.1
3135714
The tacplus package does not create the correct tacacs0-15 users in the right groups.5.1.0-5.2.1
3135683
On the Spectrum SN2201 switch, when a fan is obstructed with an object, the fan and system LEDs don’t change.5.2.0-5.2.1
3122301
On the NVIDIA SN4700 switch, inserting and removing the PSU might cause loss of frames.5.2.0-5.2.1
3115242
When you configure two VNIs in the same VLAN, ifupdown2 shows a vlan added to two or more VXLANS warning, which is only issued after the VNI is already added to the bridge. This leaves the new VNI in the PVID even if there is already an existing VNI configured in that PVID.5.1.0-5.2.1
3103821
On the NVIDIA SN4700 switch, inserting and removing the PSU might cause loss of frames.5.2.0-5.2.1
3084027
Under a high load, you might see ingress drop counters increase. The drops are classified as HwIfInDiscards in ethtool and shown as ingress_general in hardware.4.3.0-4.4.5, 5.0.0-5.2.1
3081232
On the NVIDIA Spectrum 1 switch, when a port goes down, it might not come back up
To work around this issue, disable, then enable the port.
5.0.0-5.2.14.4.4-4.4.5
3074929
On the on NVIDIA SN4700 switch, the sensors command is intermittently unable to read certain sensor attributes.5.1.0-5.2.1
3071652
On rare occasions, after you reboot or restart switchd on a Spectrum 1 switch, any 25G connections with Direct Attach Copper (DAC) cables that connect from the switch to a non-NVIDIA device might flap continuously. To work around this issue, bring the affected link administratively down for a few seconds on the non-NVIDIA device, then bring the link back up.4.4.4-4.4.5, 5.1.0-5.2.1
3066280
The python module pygments version 2.12.0 on the Cumulus Linux switch prevents NVUE from displaying colored output and produces an error or failure. The failure specifically identifies #ansidarkred as the problem color format. The error prevents any output from showing on the CLI
To work around this problem, downgrade the pygments module to version 2.3.1.
5.0.1-5.2.1
3061656
When the CPU load is high during a warm boot, bonds with a slow LACP rate fail to forward layer 2 traffic for up to 60 seconds (depending on the duration of the CPU load) and static bonds fail to forward layer 2 traffic for up to 5 seconds.5.1.0-5.2.1
3055283
After you run Linux commands to enable a custom ECMP or LAG hash parameter, if you set the hash_config.enable or lag_hash_config.enable parameter to false, the custom parameters do not restore their default values. To work around this issue, change the custom ECMP or LAG hash parameters to their default values manually.5.1.0-5.2.1
3053197
The cl-resource-query command output shows ECMP nextHop Table exhaustion (above 100 percent utilization) and the switchd.log file contains ECMP resource errors with routes and next hops failing to install.4.2.1-4.4.5, 5.0.0-5.2.1
3053094
When the CPU load is high during a warm boot, bonds with a slow LACP rate fail to forward layer 2 traffic for up to 60 seconds (depending on the duration of the CPU load) and static bonds fail to forward layer 2 traffic for up to 5 seconds.5.1.0-5.2.1
3053015
Spectrum-2 and Spectrum-3 switches do not support 1G speed with Cumulus Linux.5.1.0-5.2.1
3047747
When you change the split port speed from explicitly defined to auto-negotiation, the port speed remains stuck on the previously configured value.5.1.0-5.2.1
3045369
NVUE does not support orphaned data or pre-provisioned data. For example, if you remove a port breakout but the breakout interfaces (such as swp1s0-3) have configured data. To work around this issue, do not configure breakout interfaces until you configure and apply the breakout with the nv set interface link breakout and nv config apply commands.5.2.0-5.2.1
3045310
When GTP Hashing is set to true, after more than two warm boots switchd fails and a cl-support file is generated.5.1.0-5.2.1
3042944
Currently, the cl-ecmpcalc command does not support GTP teid as an input parameter.5.1.0-5.2.1
3041307
If you update the MAC address of an SVI using ifreload and hwaddress, the kernel maintains a stale permanent fdb entry for the old MAC address.3.7.15, 4.3.0, 4.4.0-4.4.3, 5.0.0-5.2.13.7.16, 4.3.1, 4.4.4-4.4.5
3040174
When you configure EVPN multihoming with NVUE on a switch with the Spectrum-a1 ASIC, you must configure the following snippet to enable EVPN multihoming in hardware. This is not required for Spectrum-2 or Spectrum-3 switches
- set:
system:
config:
snippet:
switchd:
file: “/etc/cumulus/switchd.conf”
content: |
evpn.multihoming.enable=TRUE
permissions: “0644”
services:
schedule:
service: switchd
action: restart
Apply the snippet with the nv config patch <snippet.yaml> command, then run the nv config apply -y command.
5.1.0-5.2.1
3037829
If you run the nv show system message command and the message of the day includes \n for a line break, NVUE might crash.5.0.0-5.2.1
3021877
After you configure a new VLAN on a bond, traffic might stop forwarding on the bond interface. This issue occurs only when you specify bridge-vids on the bond. This issue does not occur when you configure VLANs only on the bridge interface and let the bond get the bridge-vids applied from the bridge.4.4.2-4.4.3, 5.0.0-5.2.14.4.4-4.4.5
3015393
The NVUE nv show interface command shows the operational state of the tunnel as down even though the tunnel is up, and encapsulation and decapsulation occurs correctly.5.1.0-5.2.1
2993471
When switchd restarts, the port watch daemon (portwd) attempts to send requests to switchd before switchd is ready. As a result, portwd goes into a failed state because there is no response from switchd.3.7.15-3.7.16, 4.3.0-4.4.5, 5.0.0-5.2.1
2991604
The MLAG peer link conflict LACP Partner MAC same as system-mac is not currently supported.5.1.0-5.2.1
2972540
With RADIUS enabled for user shell authentication, there might be a delay in local user authentication for non cumulus user accounts.5.0.0-5.2.1
2968495
If switchd requires more time to update port or bond configuration after the port or bond flaps, the systemd watchdog times out. As result, systemd might assume that switchd is unresponsive and restarts it.4.2.1-4.4.2, 5.0.0-5.2.14.4.3-4.4.5
2964279
When a VNI flaps, an incorrect list of layer 2 VNIs are associated with a layer 3 VNI. The NCLU net show evpn vni detail command output shows duplicate layer 2 VNIs under a layer 3 VNI.3.7.15, 4.4.2-4.4.5, 5.0.0-5.2.13.7.16
2959550
If two FDB entries are added in hardware with a single API call (at the same time), when one entry already exists in hardware and the additional entry has a tunnel type, the resulting FDB entry might be configured improperly in hardware. This can cause corruption of the packets that match the FDB entry.4.4.0-4.4.2, 5.0.0-5.2.14.4.3-4.4.5
2951110
The net show time ntp servers command does not show any output with management VRF.3.7.15-3.7.16, 4.1.1-4.4.5, 5.0.0-5.2.1
2949123
The NVUE command nv show service ntp mgmt server does not show any configured servers.5.0.0-5.2.1
2939231
If you use NVUE to configure selective route leaking to exclude certain prefixes, the route map fails to apply when you run the nv config apply command.5.0.0-5.2.1
2923737
When switchd restarts, the port watch daemon (portwd) attempts to send requests to switchd before switchd is ready. As a result, portwd goes into a failed state because there is no response from switchd.3.7.15, 4.3.0, 4.4.0-4.4.5, 5.0.0-5.2.13.7.16, 4.3.1
2895333
If two FDB entries are added in hardware with a single API call (at the same time), when one entry already exists in hardware and the additional entry has a tunnel type, the resulting FDB entry might be configured improperly in hardware. This can cause corruption of the packets that match the FDB entry.4.4.0-4.4.1, 5.0.0-5.2.14.4.2-4.4.5
2891255
CVE-2021-39925: Buffer overflow in the Bluetooth SDP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
Vulnerable: <= 2.6.20-0+deb10u1Fixed: 2.6.20-0+deb10u2
4.0.0-4.4.1, 5.0.0-5.2.14.4.2-4.4.5
2890681
CVE-2021-42771: relative path traversal in Babel, a set of tools for internationalising Python applications, could result in the execution of arbitrary code
Vulnerable: 2.6.0+dfsg.1-1Fixed: 2.6.0+dfsg.1-1+deb10u1
4.0.0-4.4.1, 5.0.0-5.2.14.4.2-4.4.5
2886476
If you enable or disable the advertise primary IP address setting when originating EVPN default type-5 routes, the default route or prefix originated from one of the MLAG peers sends a null layer 3 VNI, which prevents the remote VTEP from installing the default route.5.0.0-5.2.1
2859015
In a static VXLAN configuration with a traditional VXLAN device, enabling bridge learning on the VNI leads to an incorrect warning and the setting is removed in the next commit. The warning is similar to the following:
warning: vni10: possible mis-configuration detected: l2-vni configured with bridge-learning ON while EVPN is also configured - these two parameters conflict with each other
5.0.0-5.2.1
2847919
Configuring a router with the REST API through the switch front panel ports (swps) is supported in the default VRF only
To work around this issue, use the localHost IP address or the MGMT IP address to configure router using the Rest API.
5.0.0-5.2.1
2847755
When you use NCLU to remove the configuration for a peer that is a member of a group but also has other peer-specific configuration, you must remove the peer-specific configuration before you delete the peer in a separate NCLU commit.5.0.0-5.2.1
2847618
When you enable PIM on VLAN interfaces, multicast throughput might not achieve line rate depending on packet sizes in the multicast flow.5.0.0-5.2.1
2844778
When pasting numerous NVUE configuration commands into the CLI, there is a delay of around 500ms between processing each command. To work around this problem, consider using the nv config patch or nv config replace commands to update large pieces of configuration at once.5.0.0-5.2.1
2823307
Cumuls Linux does not support a bond with more than 64 ports. Any configuration with more than 64 ports in a bond changes all ports to down when you apply the configuration.5.0.0-5.2.1
2748923
If you include a dash (-) when configuring an interface name with NVUE, you see an error. NVUE does not support using a dash in interface names.4.4.0-4.4.5, 5.0.0-5.2.1
2743186
When you use MD5 passwords and you configure a non-default VRF before the default VRF in the /etc/frr/frr.conf file, numbered BGP sessions do not establish.3.7.15-3.7.16, 4.4.0-4.4.5, 5.0.0-5.2.1
2736108
When you change the VRRP advertisement interval on the master, the master advertisement interval field in the show vrrp command output does not show the updated value.4.4.0-4.4.5, 5.0.0-5.2.1
2734103
ACL [No More Resources] messages keep appearing and you can’t reinstall the ACL.4.3.0-4.4.5, 5.0.0-5.2.1
2705056
SVIs do not inherit the pinned MAC address of the bridge.4.3.0, 5.0.0-5.2.14.3.1-4.4.5
2701000
A default route learned from DHCP on eth0 in the management VRF might install in the default VRF if eth0 is disconnected and the original next hop is reachable in the default VRF
To work around this issue, delete the DHCP lease file for eth0 with the sudo rm /var/lib/dhcp/dhclient.eth0.leases command.
4.3.0, 5.0.0-5.2.14.3.1-4.4.5
2684925
The NVUE nv show vrf default router bgp peer command produces a 404 not found error.4.4.0-4.4.5, 5.0.0-5.2.1

Fixed Issues in 5.2.1

Issue IDDescriptionAffects
3205700
None
A firmware upgrade has been implemented to optimize the PCIe bus between the CPU and Spectrum ASIC on NVIDIA SN4700, SN4600, SN4600C, and SN4410 switches manufactured with 0x26 1 17 in EEPROM. Affected switches will not boot properly without this firmware upgrade. To see the EEPROM value, run the onie-syseeprom command from ONIE or run the decode-syseeprom command from Cumulus Linux.4.4.4, 5.2.0

5.2.0 Release Notes

Open Issues in 5.2.0

Issue IDDescriptionAffectsFixed
3209895
When performing “tcpdump -i swpX” for an L3, IPv6 enabled port the switch will generate 4 IPv6 Router Advertisements when tcpdump is started, and when it finishes, for a total of 8 IPv6 RA packets transmitted.4.4.4-4.4.5, 5.0.1-5.2.1
3205859
Switch fans run at very high speed but the temperature is normal.5.2.0-5.2.1
3205700
None
A firmware upgrade has been implemented to optimize the PCIe bus between the CPU and Spectrum ASIC on NVIDIA SN4700, SN4600, SN4600C, and SN4410 switches manufactured with 0x26 1 17 in EEPROM. Affected switches will not boot properly without this firmware upgrade. To see the EEPROM value, run the onie-syseeprom command from ONIE or run the decode-syseeprom command from Cumulus Linux.4.4.4, 5.2.0-5.2.14.4.5
3202991
Locally generated multicast traffic including IGMPv2 GSQs do not transmit to local clients when using PIM.5.0.1-5.2.1
3202401
The ethtool -m command and the NVUE nv show interface pluggable command do not show the VPD for optical modules and AOCs (OUI, vendor name, part number, or revision serial number).5.2.0-5.2.1
3196774
In an EVPN configuration, after closing a BGP session on an EVPN peer, the VTEP RMAC is deleted and the hosts loose reachability to each other. To work around this issue, restart FRR or add a static RMAC entry to bridge FDB.5.2.0-5.2.1
3192808
None
When the switch receives an LLDP frame from a Cisco router right after a ptmd restart, the ptmd service crashes.4.3.0-4.4.5, 5.0.0-5.2.1
3188576
IPv6 messages fill the /var/log/frr/frr.log files and logrotate]] is unable to clean up the old log files. As a result, a significant number of log files are never deleted, which fill up the file system.5.2.0-5.2.1
3180043
The EVPN Multihoming ESI configuration command nv set interface evpn multihoming segment identifier does not work.5.1.0-5.2.1
3176318
The NVUE nv set bridge domain br_default stp priority command does not change the STP priority.5.1.0-5.2.1
3174706
When the ingress PTP port receiving PTP messages is an SVI and STP has set the port to either alternate or backup, ingress PTP messages are dropped.5.1.0-5.2.1
3172504
When you connect the NVIDIA SN4600C switch to a Spectrum-1 or Spectrum-3 switch with a 40GbE passive copper cable (Part Number: MC2210126-005) on edge ports 1-4, and 61-64, there is an Effective BER of 1E-12 in PHY.5.2.0-5.2.1
3166746
FRR does not install EVPN type-2 routes correctly after the specific operation that deletes and adds all non-uplink ports. The routes show as rejected in the zebra RIB. To work around this problem, restart FRR with the sudo systemctl restart frr command.5.1.0-5.2.1
3159756
When adding a member port to a bond you sometimes see an error. The error occurs if you configure a port as double tagged, then you remove the double tagged configuration and add the port as a bond member. You might not see the error as it depends on timing of interface events during double tagged interface creation. To work around this issue, remove the bond configuration and add it back again.5.2.0-5.2.1
3150317
During a host failure where link remains up but LACP stops being sent, the EVPN multihoming ES bond goes into bypass mode active without a linkstate change.4.4.2-4.4.5, 5.1.0-5.2.1
3150208
When a ZTP script executes a switchd restart, the switchd service might fail with the following log message:
switchd[11549]: hal.c:1378 CRIT No backends found
To work around this issue, avoid restarting the switchd service in the ZTP script; reboot the switch instead.
5.1.0-5.2.1
3148995
On the Spectrum-1 switch, PTP time distribution might deviate more than 20 nanoseconds from the master on interfaces with speeds of 50 Gbps and below.5.2.0-5.2.1
3145224
If you disable the NVUE service, the /etc/cumulus/datapath/nvue_traffic.conf file does not delete automatically, which prevents ECMP and LAG hash settings in the /etc/cumulus/datapath/traffic.conf file from taking effect. To work around this issue, delete the nvue_traffic.conf file with the sudo rm /etc/cumulus/datapath/nvue_traffic.conf command.5.2.0-5.2.1
3145222
The NVUE nv show system forwarding –output json command does not provide any output. To work around this issue, run the nv show system forwarding command.5.2.0-5.2.1
3145204
On the NVIDIA Spectum-1 switch, the nv show system forwarding command shows GTP hashing output, which is not supported on this switch.5.2.0-5.2.1
3139164
NVUE does not allow you to set 2X/4X lanes. To work around this issue, set the appropriate lanes for forced speed with the ethtool -s swpX speed <port_speed> autoneg off lanes <no_of_lanes> command. For example, ethtool -s swp1 speed 100000 autoneg off lanes 2.5.2.0-5.2.1
3138057
When the next-hop interface for EVPN type 5 routes flaps, FRR might uninstall the routes and Route install failed appears in /var/log/frr/frr.log. To work around this problem, restart FRR with the sudo systemctl restart frr command.4.4.0-4.4.5, 5.0.0-5.2.1
3136303
In Cumulus Linux 5.2 and later, WJH can monitor the buffer channel by default in addition to the layer 1, layer 2, layer 3, ACL, and tunnel channels.5.2.0-5.2.1
3135952
PAM4 split cables (such as 2x100G, 4x100G, and 4x50G) do not work with a forced speed setting (when auto-negotiation is off) as the default speed enabled is for NRZ mode (such as 100G_4X). To work around this issue, set the appropriate lanes for forced speed (with auto-negotation off) with the ethtool -s swpX speed <port_speed> autoneg off lanes <no_of_lanes> command. For example:
ethtool -s swp1 speed 100000 autoneg off lanes 2
5.2.0-5.2.1
3135714
The tacplus package does not create the correct tacacs0-15 users in the right groups.5.1.0-5.2.1
3135683
On the Spectrum SN2201 switch, when a fan is obstructed with an object, the fan and system LEDs don’t change.5.2.0-5.2.1
3122301
On the NVIDIA SN4700 switch, inserting and removing the PSU might cause loss of frames.5.2.0-5.2.1
3115242
When you configure two VNIs in the same VLAN, ifupdown2 shows a vlan added to two or more VXLANS warning, which is only issued after the VNI is already added to the bridge. This leaves the new VNI in the PVID even if there is already an existing VNI configured in that PVID.5.1.0-5.2.1
3103821
On the NVIDIA SN4700 switch, inserting and removing the PSU might cause loss of frames.5.2.0-5.2.1
3084027
Under a high load, you might see ingress drop counters increase. The drops are classified as HwIfInDiscards in ethtool and shown as ingress_general in hardware.4.3.0-4.4.5, 5.0.0-5.2.1
3081232
On the NVIDIA Spectrum 1 switch, when a port goes down, it might not come back up
To work around this issue, disable, then enable the port.
5.0.0-5.2.14.4.4-4.4.5
3074929
On the on NVIDIA SN4700 switch, the sensors command is intermittently unable to read certain sensor attributes.5.1.0-5.2.1
3071652
On rare occasions, after you reboot or restart switchd on a Spectrum 1 switch, any 25G connections with Direct Attach Copper (DAC) cables that connect from the switch to a non-NVIDIA device might flap continuously. To work around this issue, bring the affected link administratively down for a few seconds on the non-NVIDIA device, then bring the link back up.4.4.4-4.4.5, 5.1.0-5.2.1
3066280
The python module pygments version 2.12.0 on the Cumulus Linux switch prevents NVUE from displaying colored output and produces an error or failure. The failure specifically identifies #ansidarkred as the problem color format. The error prevents any output from showing on the CLI
To work around this problem, downgrade the pygments module to version 2.3.1.
5.0.1-5.2.1
3061656
When the CPU load is high during a warm boot, bonds with a slow LACP rate fail to forward layer 2 traffic for up to 60 seconds (depending on the duration of the CPU load) and static bonds fail to forward layer 2 traffic for up to 5 seconds.5.1.0-5.2.1
3055283
After you run Linux commands to enable a custom ECMP or LAG hash parameter, if you set the hash_config.enable or lag_hash_config.enable parameter to false, the custom parameters do not restore their default values. To work around this issue, change the custom ECMP or LAG hash parameters to their default values manually.5.1.0-5.2.1
3053197
The cl-resource-query command output shows ECMP nextHop Table exhaustion (above 100 percent utilization) and the switchd.log file contains ECMP resource errors with routes and next hops failing to install.4.2.1-4.4.5, 5.0.0-5.2.1
3053094
When the CPU load is high during a warm boot, bonds with a slow LACP rate fail to forward layer 2 traffic for up to 60 seconds (depending on the duration of the CPU load) and static bonds fail to forward layer 2 traffic for up to 5 seconds.5.1.0-5.2.1
3053015
Spectrum-2 and Spectrum-3 switches do not support 1G speed with Cumulus Linux.5.1.0-5.2.1
3047747
When you change the split port speed from explicitly defined to auto-negotiation, the port speed remains stuck on the previously configured value.5.1.0-5.2.1
3045369
NVUE does not support orphaned data or pre-provisioned data. For example, if you remove a port breakout but the breakout interfaces (such as swp1s0-3) have configured data. To work around this issue, do not configure breakout interfaces until you configure and apply the breakout with the nv set interface link breakout and nv config apply commands.5.2.0-5.2.1
3045310
When GTP Hashing is set to true, after more than two warm boots switchd fails and a cl-support file is generated.5.1.0-5.2.1
3042944
Currently, the cl-ecmpcalc command does not support GTP teid as an input parameter.5.1.0-5.2.1
3041307
If you update the MAC address of an SVI using ifreload and hwaddress, the kernel maintains a stale permanent fdb entry for the old MAC address.3.7.15, 4.3.0, 4.4.0-4.4.3, 5.0.0-5.2.13.7.16, 4.3.1, 4.4.4-4.4.5
3040174
When you configure EVPN multihoming with NVUE on a switch with the Spectrum-a1 ASIC, you must configure the following snippet to enable EVPN multihoming in hardware. This is not required for Spectrum-2 or Spectrum-3 switches
- set:
system:
config:
snippet:
switchd:
file: “/etc/cumulus/switchd.conf”
content: |
evpn.multihoming.enable=TRUE
permissions: “0644”
services:
schedule:
service: switchd
action: restart
Apply the snippet with the nv config patch <snippet.yaml> command, then run the nv config apply -y command.
5.1.0-5.2.1
3037829
If you run the nv show system message command and the message of the day includes \n for a line break, NVUE might crash.5.0.0-5.2.1
3021877
After you configure a new VLAN on a bond, traffic might stop forwarding on the bond interface. This issue occurs only when you specify bridge-vids on the bond. This issue does not occur when you configure VLANs only on the bridge interface and let the bond get the bridge-vids applied from the bridge.4.4.2-4.4.3, 5.0.0-5.2.14.4.4-4.4.5
3015393
The NVUE nv show interface command shows the operational state of the tunnel as down even though the tunnel is up, and encapsulation and decapsulation occurs correctly.5.1.0-5.2.1
2993471
When switchd restarts, the port watch daemon (portwd) attempts to send requests to switchd before switchd is ready. As a result, portwd goes into a failed state because there is no response from switchd.3.7.15-3.7.16, 4.3.0-4.4.5, 5.0.0-5.2.1
2991604
The MLAG peer link conflict LACP Partner MAC same as system-mac is not currently supported.5.1.0-5.2.1
2972540
With RADIUS enabled for user shell authentication, there might be a delay in local user authentication for non cumulus user accounts.5.0.0-5.2.1
2968495
If switchd requires more time to update port or bond configuration after the port or bond flaps, the systemd watchdog times out. As result, systemd might assume that switchd is unresponsive and restarts it.4.2.1-4.4.2, 5.0.0-5.2.14.4.3-4.4.5
2964279
When a VNI flaps, an incorrect list of layer 2 VNIs are associated with a layer 3 VNI. The NCLU net show evpn vni detail command output shows duplicate layer 2 VNIs under a layer 3 VNI.3.7.15, 4.4.2-4.4.5, 5.0.0-5.2.13.7.16
2959550
If two FDB entries are added in hardware with a single API call (at the same time), when one entry already exists in hardware and the additional entry has a tunnel type, the resulting FDB entry might be configured improperly in hardware. This can cause corruption of the packets that match the FDB entry.4.4.0-4.4.2, 5.0.0-5.2.14.4.3-4.4.5
2951110
The net show time ntp servers command does not show any output with management VRF.3.7.15-3.7.16, 4.1.1-4.4.5, 5.0.0-5.2.1
2949123
The NVUE command nv show service ntp mgmt server does not show any configured servers.5.0.0-5.2.1
2939231
If you use NVUE to configure selective route leaking to exclude certain prefixes, the route map fails to apply when you run the nv config apply command.5.0.0-5.2.1
2923737
When switchd restarts, the port watch daemon (portwd) attempts to send requests to switchd before switchd is ready. As a result, portwd goes into a failed state because there is no response from switchd.3.7.15, 4.3.0, 4.4.0-4.4.5, 5.0.0-5.2.13.7.16, 4.3.1
2895333
If two FDB entries are added in hardware with a single API call (at the same time), when one entry already exists in hardware and the additional entry has a tunnel type, the resulting FDB entry might be configured improperly in hardware. This can cause corruption of the packets that match the FDB entry.4.4.0-4.4.1, 5.0.0-5.2.14.4.2-4.4.5
2891255
CVE-2021-39925: Buffer overflow in the Bluetooth SDP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
Vulnerable: <= 2.6.20-0+deb10u1Fixed: 2.6.20-0+deb10u2
4.0.0-4.4.1, 5.0.0-5.2.14.4.2-4.4.5
2890681
CVE-2021-42771: relative path traversal in Babel, a set of tools for internationalising Python applications, could result in the execution of arbitrary code
Vulnerable: 2.6.0+dfsg.1-1Fixed: 2.6.0+dfsg.1-1+deb10u1
4.0.0-4.4.1, 5.0.0-5.2.14.4.2-4.4.5
2886476
If you enable or disable the advertise primary IP address setting when originating EVPN default type-5 routes, the default route or prefix originated from one of the MLAG peers sends a null layer 3 VNI, which prevents the remote VTEP from installing the default route.5.0.0-5.2.1
2859015
In a static VXLAN configuration with a traditional VXLAN device, enabling bridge learning on the VNI leads to an incorrect warning and the setting is removed in the next commit. The warning is similar to the following:
warning: vni10: possible mis-configuration detected: l2-vni configured with bridge-learning ON while EVPN is also configured - these two parameters conflict with each other
5.0.0-5.2.1
2847919
Configuring a router with the REST API through the switch front panel ports (swps) is supported in the default VRF only
To work around this issue, use the localHost IP address or the MGMT IP address to configure router using the Rest API.
5.0.0-5.2.1
2847755
When you use NCLU to remove the configuration for a peer that is a member of a group but also has other peer-specific configuration, you must remove the peer-specific configuration before you delete the peer in a separate NCLU commit.5.0.0-5.2.1
2847618
When you enable PIM on VLAN interfaces, multicast throughput might not achieve line rate depending on packet sizes in the multicast flow.5.0.0-5.2.1
2844778
When pasting numerous NVUE configuration commands into the CLI, there is a delay of around 500ms between processing each command. To work around this problem, consider using the nv config patch or nv config replace commands to update large pieces of configuration at once.5.0.0-5.2.1
2823307
Cumuls Linux does not support a bond with more than 64 ports. Any configuration with more than 64 ports in a bond changes all ports to down when you apply the configuration.5.0.0-5.2.1
2748923
If you include a dash (-) when configuring an interface name with NVUE, you see an error. NVUE does not support using a dash in interface names.4.4.0-4.4.5, 5.0.0-5.2.1
2743186
When you use MD5 passwords and you configure a non-default VRF before the default VRF in the /etc/frr/frr.conf file, numbered BGP sessions do not establish.3.7.15-3.7.16, 4.4.0-4.4.5, 5.0.0-5.2.1
2736108
When you change the VRRP advertisement interval on the master, the master advertisement interval field in the show vrrp command output does not show the updated value.4.4.0-4.4.5, 5.0.0-5.2.1
2734103
ACL [No More Resources] messages keep appearing and you can’t reinstall the ACL.4.3.0-4.4.5, 5.0.0-5.2.1
2705056
SVIs do not inherit the pinned MAC address of the bridge.4.3.0, 5.0.0-5.2.14.3.1-4.4.5
2701000
A default route learned from DHCP on eth0 in the management VRF might install in the default VRF if eth0 is disconnected and the original next hop is reachable in the default VRF
To work around this issue, delete the DHCP lease file for eth0 with the sudo rm /var/lib/dhcp/dhclient.eth0.leases command.
4.3.0, 5.0.0-5.2.14.3.1-4.4.5
2684925
The NVUE nv show vrf default router bgp peer command produces a 404 not found error.4.4.0-4.4.5, 5.0.0-5.2.1

Fixed Issues in 5.2.0

Issue IDDescriptionAffects
3172295
In rare cases, changing configuration on an existing bond, VLAN, or VXLAN interface can result in the MTU of that interface being reset to 0. To work around this issue, run ifreload -a a second time to set the MTU back to the configured or default value.5.1.0
3163200
If there is extensive and continuous next-hop group (NHG) churn when routes keep moving from one NHG to another NHG repeatedly, switchd increases in memory allocation until memory is exhausted. Other processes might be affected as they try to acquire memory which is unavailable.5.1.0
3163159
The NVUE command to disable EVPN duplicate address detection does not work. To work around this issue, use an NVUE snippet.5.1.0
3157240
When you try to query REDECN counters with the mlxcmd utility on a bond member port with the following commands, syslog reports an error
sudo /usr/lib/cumulus/mlxcmd roce counters –port sudo /usr/lib/cumulus/mlxcmd qos counters –clear –port 
4.4.4-5.1.0
3149034
When you change the ecmp_hash_seed parameter in the /etc/cumulus/datapath/traffic.conf file, switchd does not restart. To work around this issue, restart switchd manually.
3148920
NVUE configuration commands produce errors when included as part of a ZTP script that executes automatically during the switch boot process. This occurs because the $HOME variable is not set during ZTP. This does not occur if you trigger ZTP manually from the CLI with the sudo ztp -r http://x.x.x.x/cumulus-ztp command. To work around this issue, define the $HOME variable within the ZTP script with export HOME=/root.5.1.0
3146886
FRR does not establish BGP peering with neighbors configured with a router ID that overlaps with IP addresses in the class D or E address spaces.5.1.0
3141818
If there is extensive and continuous next-hop group (NHG) churn when routes keep moving from one NHG to another NHG repeatedly, switchd increases in memory allocation until memory is exhausted. Other processes might be affected as they try to acquire memory which is unavailable.5.0.1-5.1.0
3138746
The switch duplicates DHCP packets that pass through the VTEP.4.3.0-5.1.0
3136983
When a layer 3 neighbor entry resolves to a bridge FDB entry that does not exist in the kernel, switchd might contribute to high CPU load while it continues to try to sync and resolve the neighbor entry. This results in many sync_l3_nexthop messages printed to /var/log/switchd.log.5.0.1-5.1.0
3136905
When you upgrade from Cumulus Linux 5.0.1 to Cumulus Linux 5.1.0, the upgrade adds KexAlgorithms and MACs configuration to the /etc/ssh/sshd_config file without prompting for confirmation. This might cause the /etc/ssh/sshd_config file to be incorrect if there is a Match section; KexAlgorithms and MACs must come before Match. To work around this issue, move the lines that start with KexAlgorithms and MACs before Match or remove them, then restart the SSH service with the sudo systemctl restart ssh command. If you have already specified KexAlgorithms or MACs, you can remove the newly added lines after upgrade.5.0.1-5.1.0
3135070
After you configure the NVIDIA SN2010 series switch for the first time with NVUE, you see the fan speed at 100 percent. To work around this issue, run the sudo systemctl restart hw-management.service command to restart the hardware management service.5.1.0
3131423
During EVPN multihoming bond failover, ARP and ND redirection fails if you configure layer 2 VNIs and ES bonds before you configure the loopback IP address of the switch. To work around this issue, configure the loopback IP address, then restart FRR with the systemctl restart frr command.4.3.0-5.1.0
3123965
Having resources in Garbage sometimes leads to under accounting of KVD resources in Resource Manager.4.4.0-5.1.0
3123556
When you configure an interface in FRR to send IPv6 RAs before you configure the interface in the /etc/network/interfaces file, the switch does not process IPv6 RAs. To work around this issue, remove the interface configuration in FRR and reapply it.3.7.15-4.3.0, 4.4.0-5.1.0
3119673
If the switch receives an EVPN route with multiple RTs that match the import policy for a local VNI, the bgpd service crashes.5.0.0-5.1.0
3117340
When you edit the /usr/share/openvswitch/scripts/ovs-ctl-vtep file to change the ovs-vtepd configuration between vlan-aware and vlan-unaware mode, ovs-vtepd crashes when you restart the service. To recover, restart the networking service with the sudo systemctl restart networking command.4.3.0-5.1.0
3115415
In the Cumulus-BGPVRF-MIB, the bgpPeerFsmEstablishedTime OID does not correctly report the time since a BGP session goes down.4.4.4-5.1.0
3112971
When you configure a VRF static route using the legacy command syntax in FRR (for example: ip route 10.0.0.0/8 172.16.1.1 vrf vrf-red), then make subsequent VRF or route configuration changes, FRR might crash. To avoid this problem, use the current method for configuring VRF routes within the VRF stanza:
vrf vrf-red
ip route 10.0.0.0/8 172.16.1.1 vrf vrf-redend vrf
4.4.3-5.1.0
3112938
In the Cumulus-BGPVRF-MIB, the bgpPeerFsmEstablishedTransitions OID always reports a value of 0.4.4.4-5.1.0
3107606
Cumulus Linux installation fails with the error Installation Problems, sub-task Installing Optional Packages. This occurs because the web server hosting the Cumulus Linux image remaps a 404 for a non-existent file image.optional_pkgs into a web page, which it then incorrectly attempts to use as a list of optional packages
To work around this issue, on the web server hosting the image, create an empty file with the same name as the image with .optional_pkgs appended to the name.
4.2.1-4.3.0, 4.4.0-4.4.3, 5.0.0-5.1.0
3102128
When you configure a new VNI, the VLAN 1 VNI mapping is removed from the VXLAN device. To work around this issue, set the VNI interface mapped to VLAN 1 down and up again.4.4.3-5.1.0
3085285
The snmpd process will slowly leak memory when you poll TCP-MIB objects. To work around this issue, restart the snmpd service to free memory with the systemctl restart snmpd command.3.7.16-4.4.3, 5.0.0-5.1.0
3084007
The clagd process uses 100 percent CPU and eventually crashes with an Unable to allocate memory error.4.4.3, 5.1.0
3077736
When you run the NVUE command to change the minimum interval between received BFD control packets or the minimum interval for sending BFD control packets, the configuration apply fails.

cumulus@switch:~$ nv set vrf default router bgp neighbor 10.10.10.2 bfd min-rx-interval 400
cumulus@switch:~$ nv config apply
2022-05-04T21:36:10.800975+00:00 switch frrinit.sh16431: Stopped watchfrr.
5.0.1-5.1.0
3077669
Tab complete for the nv action command does not show available options.
3077547
When you configure multiple multicast RPs with groups matched by prefix lists, Cumulus Linux selects only one of the RPs and this selection is incorrect.5.0.1-5.1.0
3077513
When a MAC address is moved to a new VTEP in an EVPN MAC mobility scenario using traditional bridges, there might be up to 30 seconds of convergence delay.5.0.1-5.1.0
3074390
You can not apply NVUE configurations when TACACS is enabled for user authentication. To work around this issue, add the nvue account to the exclude_users line in /etc/tacplus_nss.conf:
exclude_users=root,daemon,nobody,cron,radius_user,radius_priv_user,sshd,cumulus,quagga,frr,nvue,snmp,www-data,ntp,man,_lldpd,*
5.0.1-5.1.0
3066664
In an EVPN-MH configuration, the switch fails to redirect tagged frames with the CoS bits set.4.4.0-4.4.3, 5.0.0-5.1.0
3061445
When you run the NVUE command to change the minimum interval between received BFD control packets or the minimum interval for sending BFD control packets, the configuration apply fails
cumulus@switch:~$ nv set vrf default router bgp neighbor 10.10.10.2 bfd min-rx-interval 400cumulus@switch:~$ nv config apply2022-05-04T21:36:10.800975+00:00 switch frrinit.sh16431: Stopped watchfrr
5.0.1-5.1.0
3059566
When you add an interface to a layer 3 bond, traffic does not forward and you see errors similar to the following:
2022-05-02T13:14:40.118597+00:00 cumulus sx_sdk: ROUTER: Failed to delete router interface(27) ref count isn’t 0, err= Resource is in use
4.4.2-4.4.3, 5.0.1-5.1.0
3059380
When you configure VRF leaking from the default VRF to a non-default VRF, SSH sessions originating from the switch CLI in the default VRF do not connect to devices in the non-default VRF.5.0.1-5.1.0
3059135
In an OSPF configuration, after you change the IPv6 subnet mask, the old address remains in the RIB as a connected OSPF route
To resolve this issue, restart FRR with the sudo systemctl restart frr command.
4.3.0-5.1.0
3054869
When you run NVUE commands as part of ZTP scripts, the commands fail with errors that indicate a missing $HOME environment variable. The issue has been fixed where the ZTP module initializes the $HOME environment variable before launching the ZTP scripts. However, if you are running older releases, before you use any NVUE commands in the ZTP script, add a section and define the HOME environment variable. Populate the variable with the default expected root user home directory value (/root), then export the HOME variable so it is available globally for NVUE to use
HOME=/rootexport HOME
5.0.0-5.1.0
3046023
The cl-resource-query command output shows ECMP nextHop Table exhaustion (above 100 percent utilization) and the switchd.log file contains ECMP resource errors with routes and next hops failing to install.4.2.1-5.1.0
3044596
In the non-default VRF, BFD goes down after port flap.5.0.1-5.1.0
3043115
NVUE configuration and show commands are not available for GTP hashing. To configure GTP hashing, modify the parameters in the /etc/cumulus/datapath/traffic.conf file.5.1.0
3041425
When you add or remove PortAutoEdge on a bond with the NVUE nv set interface bridge domain br_default stp auto-edge command, the command fails with the following error and then attempts to enable or disable PortAutoEdge on any interface also fail
cumulus@switch:~$ nv set interface swp1 bridge domain br_default stp auto-edge offcumulus@switch:~$ nv config applyUnable to reload-or-restart services (switchd,ifreload-nvue.service):[sudo] password for nvue: Job for ifreload-nvue.service failed because the control process exited with error code
Failure during apply. Ignore? [y/N]
5.0.1-5.1.0
3023345
When you run NVUE commands to unset one or more options associated with a field, the command fails with an error. For example:
cumulus@switch:~$ nv unset system forwarding ecmp-hash source-portusage: nv unset system forwarding ecmp-hash [options]nv unset system forwarding ecmp-hash: error: unrecognized arguments: source-port
5.1.0
3021693
When ARP suppression is off, Cumulus Linux sends GARPs from neighmgrd for remote neighbors over VXLAN.3.7.15-4.3.0, 4.4.0-4.4.3, 5.0.0-5.1.0
3016882
In certain cases, when you power cycle the switch, the NVUE configuration might become corrupted, which prevents NVUE from running. You see a critical error in the log file similar to:
CRITICAL: cue_versions_v1.repo: The NVUE internal data store is corrupted or has been initialized incorrectly. The is an unrecoverable error
To work around this issue, remove the /var/lib/nvue/config and /var/lib/nvue/meta directories, then restart the nvued service with the sudo systemctl start nvued command. If possible, NVUE recovers user configuration and saves it in the /etc/nvue.d directory. The recovered configuration will be saved as YAML files, which are named as nvue-recovery-.yaml. You can reapply the recovered configuration with the nv config patch nvue-recovery-.yaml followed by nv config apply commands.
5.0.1-5.1.0
3014664
On the NVIDIA SN3420 switch, the smonctl command output shows the maximum PSU temperature higher than the critical temperature.4.4.2-4.4.3, 5.0.0-5.1.0
2993719
After you delete the last vxlan-remoteip configuration line from the /etc/network/interfaces file and run the ifreload -a command, the corresponding BUM flood entry is not removed.3.7.15-5.0.1
2952605
After you install Cumulus Linux, then run the sudo smonctl command, the line card (gear box) sensors might not display at first, then take a few minutes to show the OK state. This issue does not affect the operation of the switch.
2867248
The validate-ports -d command does not return the correct speeds for ports. Use the speeds specified in the /etc/cumulus/ports.conf file.5.0.0-5.1.0
2831968
The switch duplicates DHCP packets that pass through the VTEP.4.3.0, 4.4.0-5.1.0
2812075
When you configure PIM, you can either configure RP mappings for different multicast groups or use a prefix list to specify the RP to group mapping. You cannot use the two methods together.5.0.0-5.1.0