Open Issues

In some corner cases, traffic is not scheduled equally between strict priority queues. This can happen in the following scenario: Priority queue configured and completely utilizes the bandwidth and remaining queues are starved and traffic completely drops on those queues. In this state if we configure a second strict high priority queue, traffic is not scheduled equally between strict priority queues. This is hardware (ACX7509) specific issue. If we have a shaper on priority queue, this issue does not happen. Also if the traffic starts after the configurations no issues are seen.PR1577035

The timingd application cannot be successfully restarted on ACX7100 or ACX7024 with G.8275.1 profile configuration. If there are PTP streams configured and there is a timingd restart due to timingd core file generation or requested application restart, the PTP streams might not be restored correctly and changes to the PTP stream configuration after the restart might result in PTP streams that do not forward data packets correctly. It is very likely that a restart always affect the streams.PR1597120

G.8275.1- G.8273.2 1PPS cTE performance test might be marginally outside class-C for PTP BC on ACX7100-48L, especially for mixed speed port testing with combinations of 10G / 25G channelized ports and 100G ports. On each reboot, the 1PPS cTE measurement might be within the class-C measurement threshold, or might randomly be out of threshold by a few nanoseconds.PR1607381

The syncE to PTP and syncE to 1pps transient response marginally fails. This happens when the servo gets the initial 100ns jump in one measurement window and the next 100ns in the next measurement window adjusting less initially. PR1611848

ACX7509: Ungraceful removal (OIR) of FPC or an FPC fault might result in PCIE MAJOR alarm PCI Uncorrected error on dev 0000:00:03.0 which does not get cleared. PR1620197

If system is fully scaled across features and firewall is also scaled, CPU consumption is more for a small window of around 5 seconds after every 18 seconds or so. Evo-pfemand is busy collecting the scaled firewall stats for that 5 second window and any other applications such as pfe-cli trying to execute commands might fail during it. PR1629342

On all Junos Evolved platform with dual Routing Engines, If FPC is restarted and multiple features such as L3VPN, L2VPN, SR, LDP etc.. are configured with scale, then picd (physical interface card daemon) crash is observed occasionally which brings all FPCs down causing complete traffic blackhole.PR1650302

When TCP Main and TCP remaining are attached together on physical interface, it is observed that improper scheduler MAP gets configured on HQoS physical interface while sched params modification and bind are performed on the same commit. This is a sequence issue from CoSD (Routing Engine) which is not guaranteed at Packet Forwarding Engine side and this applicable for all platforms.PR1664785

In ACX7509, PTP does not work if we move Layer 2 configuration to Layer 3 configuration.PR1669128

HQoS - VoQ stats issue during scaled configuration with congestion. When a system is configured with maximum allowed TCP on logical interfaces across physical interface, and all VoQ traffic is congested. It is expected that VoQ queued counters and dropped counters don't show valid information. Reason : At some point of time, limited or no guaranteed buffer is available to process further packets, Hence, packets are dropped well before reaching VoQ. This works as per hardware design. PR1674669

ECMP over MPLS FRR feature is not supported.PR1676526

The QSFP28-DD-2X100GBASE-LR4 links go down on multiple FPC restarts or system reboots due to the optics tx loss. PR1685520

ACX7509: G.8275.1 FPC Dpll status is incorrectly shown in timingd gencfg ptp centralized command. PR1685675

In ACX7509, syncE to PTP and 1PPS noise transfer and transient test fails. PR1685979

[interface] [evo_ifd] ACX7100-32C :: Module temperature is very high at default fan speed and need update to EM policy. PR1688306

When using RFC2544 benchmarking within Layer 2 VPN services in routing Intances, the operational CLI to display the RFC2544 test results returns an error when the routing-instance value is used. PR1696146

When the following command set routing-options transport-class auto-createis configured, rpd creates or deletes tables dynamically. There is a flaw in the Delete Flow, which does not delete the table from the kernel, and when the next time rpd adds the same table, the operation is stuck with EEXISTS error, as previous delete was never done. Any subsequent commit resolves this issue. PR1696199

DTE mask fails for cascaded setup with long run. PR1697093

When BFD sessions are scaled upto 4k (2k IPv4 & 2k IPv6), few BFD over IPv6 sessions do not come up (< 10 sessions). The sessions are distributed among 4 different clients: 1k OSPF, 1k IS-ISv4, 1k BGPv6 & 1k Staticv6. The sessions that do not come up are BFD over Staticv6 client, other clients have no issues. PR1699085

Timingd core file is generated with PTPoIRB configuration. PR1701122

On ACX7509, MACsec MKA sessions might not come up after restarting FPC multiple (4-5) times. The only way to recover from this situation is to reboot the chassis. PR1701941

MCLAG: IPv6 ping fails between host and one of the MCLAG peer. With this issue on the setup, there is a traffic drop as IPv6 neighborship does not come up between the irb interfaces. With deactivating and activating irb interface, IPv6 neighborship gets resolved. PR1704177

Platform dependency-state error is seen on cosd.PR1649388

Paragon Active Assurance (PAA) plugins might report incorrect latency results occasionally exceeding 20 ms, the error is larger in transmit direction and is more likely to occur at higher rates.PR1697270

The system might ask for your password when you try to save the configuration file.PR1665008