Alert Type

SRN - Software Release Notification
Low/NotificationSoftware Release Notification
Low/NotificationSoftware Release Notification

Product Affected

ACX PTX QFX platforms running Junos Evolved software

Alert Description

Junos Software Service Release version 24.4R1-S3-EVO is now available for download from the Junos software download site

Download Junos Software Service Release:

  1. Go to Junos Platforms - Download Software page
  2. Input your product in the "Find a Product" search box
  3. From the Type/OS drop-down menu, select Junos SR
  4. From the Version drop-down menu, select your version
  5. Click the Software tab
  6. Select the Install Package as need and follow the prompts

NOTE: Starting on August 30th, 2024, we include PR's severity with each entry. See KB86335 [juniper.net] for the definition of PR's Severity

 

Junos Selective Update (JSU) feasible

Not applicable

Call to Action

Please review.

Solution

Junos Software service Release version 24.4R1-S3-EVO is now available.

24.4R1-S3-EVO - List of Fixed issues 

PR NumberSynopsisCategory: Issues with pluggable optics
1856588
Major		(QSFP-100G-LRBD-U/D) & (QSFP28-100G-BX40-D/U) optics DOM output displayed more than one lane
Product-Group=evo
Severity=Major		The 10km and 40km (QSFP-100G-LRBD & QSFP-100G-ERBD) are bidirectional pluggable, where Tx and Rx share the same fiber but different wavelengths. Optics supports only one media lane.
PR NumberSynopsisCategory: the replication daemon (repd) for Shared Memory-base
1870183
Major		RPD might crash when upgrading using no-validate.
Product-Group=evo
Severity=Major		RPD might crash when upgrading without using no-validate. Use no-validate to avoid the crash.
PR NumberSynopsisCategory: Express BX PFE L3 Features
1853920
Major		JNP10K-LC1301 running on ASAN image will go into fault state after restart
Product-Group=evo
Severity=Major		With FPC restart on a scaled system with ASAN, evo-aftmand see head-of-line blocking of platform DDS objects that may cause DMF init to timeout and the FPC to go to fault state.
PR NumberSynopsisCategory: Binding Queue
1859621
Minor		SNMP walk failure due to missing OID after FCO/TPA delete compression
Product-Group=evo
Severity=Minor		On all PTX Junos and Junos evolved platforms, an issue occurs when performing SNMP walks, resulting in the error No Such Instance currently exists at this OID. This is caused by a lifecycle management problem involving FCO (Factory Configuration Object) and TPA (Third-Party Attachment) objects. Specifically, when both FCO (IFDO) and TPA (IfSnmpInfo) are deleted in quick succession, only the FCO delete notification is sent, skipping the FCO modification callback that the TPA would typically trigger a delete event. As a result, the SNMP index mapping associated with the TPA is not properly updated, leading to missing entries during SNMP walks.
PR NumberSynopsisCategory: Issues related to EVO dependency layer including object graphs, incompletes, anomalies and nkdb
1874151
Critical		Rare assert with an Junos Evolved process
Product-Group=evo
Severity=Critical		This is a rare chance of a process panic. This can be seen in Evo apps. If seen in forwarding apps it can result in system reboot and resulting traffic loss.
PR NumberSynopsisCategory: Interface PRs defect & enhancement requests
1859501
Minor		Interfaces with the same outer VLAN ID but different inner vlans or inner-lists/ranges are reporting a commit error
Product-Group=evo
Severity=Minor		On all Junos OS Evolved platforms, When an interface configured with the same outer VLAN ID but with different inner vlans or inner-lists/ranges, reports a commit error.
1867231
Major		Transit multicast traffic is getting blackhole due to peer interface flap
Product-Group=evo
Severity=Major		On Junos OS Evolved platforms, when peer interface flaps which connected to AE (Aggregated Ethernet) interface leading to synchronization of the interface up events with PFE (Packet Forwarding Engine) gets delayed. This issue results in the transit multicast traffic getting blackhole.
1867603
Major		Coredump during LAG disable
Product-Group=evo
Severity=Major		Pre-conditions are: 1. Aggregate Ethernet interface is configured with/without lacp 2. Aggregate Ethernet interface is configured with BFD configs. Trigger is: 3. With the specified configuration, if any config change is issued on AE IFL then it results in aggd core. 4. One such example is [edit interfaces ae2301 unit 0] + disable; There is no work-around, so none is mentined.
PR NumberSynopsisCategory: Express PFE MPLS for EVO platforms
1861803
Minor		Control plane is not properly managing the label 1048575 for MPLS traffic, leading to service impact
Product-Group=evo
Severity=Minor		On PTX Evolved platforms, the control plane is incorrectly using label 1048575 for MPLS (Multiprotocol Label Switching) traffic, this label is being changed to the NULL label 3, as if it corresponds to a non-MPLS packet, resulting in the label being popped, leading to all traffic associated to these MPLS threads to be dropped.
1874004
Major		Route installation for MPLS labels fails when an RSVP LSP goes down
Product-Group=evo
Severity=Major		On all Junos Evolved PTX platforms in a Multi-Protocol Label Switching (MPLS) environment, where the device is the ingress router in a Label Distribution Protocol (LDP) over Resource Reservation Protocol (RSVP) topology, all traffic to remote Layer 3 Virtual Private Network (L3VPN) destinations is blackholed when an RSVP Label Switching Path (LSP) goes down (e.g., cleared or flapped). This happens because the route installation for MPLS labels in the Packet Forwarding Engine (PFE) hardware fails, resulting in missing or incorrect forwarding entries.
PR NumberSynopsisCategory: AAA, auditd issues
1862203
Minor		Radius authentication is failing when Challenge Token is entered
Product-Group=evo
Severity=Minor		On all Junos and Evo platforms, the Radius Multi-Factor Authentication (MFA) failing for user login if the password and token were provided in two separate steps.
PR NumberSynopsisCategory: Configd, ffp issues
1877439
Minor		Traffic drop occurs on Junos Evolved platforms when prefix is moved between dynamic prefix-lists used in firewall filter
Product-Group=evo
Severity=Minor		On all Junos Evolved platforms, when a firewall filter is configured with a dynamic prefix-list that is referenced using an apply-path statement, moving a prefix from one such prefix-list to another where both prefix-lists match the apply-path pattern results in the prefix not being programmed in the PFE. This causes traffic loss for that prefix. The issue is triggered when the configuration includes apply-path pointing to both the source and destination prefix-lists, and a prefix is deleted from one and added to the other through a commit operation.
PR NumberSynopsisCategory: mgd, ddl, odl infra issues
PR NumberSynopsisCategory: EVPN control plane issues
1851659
Minor		Few seconds traffic loss during previous DF coming back with EVPN-VPWS non-revertive DF preference feature enabled
Product-Group=evo
Severity=Minor		With DF(designated forwarder) preference in non-revertive mode, we see previous DF which comes after failure, becomes primary for few seconds and we see few seconds traffic loss due to this.
PR NumberSynopsisCategory: ACX7509 Linecard (FPC) related issues
PR NumberSynopsisCategory: Libjtask for RPD tasks, scheduler, timers, memory, and slip
1843627
Critical		Memory leak when deactivating/reactivating routing instances with vrf-table-label
Product-Group=evo
Severity=Critical		On all Junos Evolved platforms, a memory leak occurs when a routing instance configured with "vrf-table-label" is deactivated and then reactivated, followed by a Routing Engine (RE) switchover on dual RE systems. This issue causes a slow memory leak in the system.
PR NumberSynopsisCategory: Layer2 forwarding on EX/NTF/PTX/QFX
1864295
Major		L2ald process crash is observed upon executing hidden command "show ethernet-switching debug-statistics fast-mac-update" in case the command doesn't have any output
Product-Group=evo
Severity=Major		On all Junos and Junos OS Evolved platforms, the l2ald process crash is observed upon executing the hidden command "show ethernet-switching debug-statistics fast-mac-update" in case the command doesn't have any output.
PR NumberSynopsisCategory: Phone-Home-Client Infrastructure
1871802
Critical		High memory and CPU usage due to unintended phone-home client activation
Product-Group=evo
Severity=Critical		On Junos OS Evolved platforms, high memory and CPU usage may occur if the phone-home client (PHC) is unintentionally triggered, such as when the device boots with factory default settings or when phone-home is manually configured. This can lead to system slowness, crashes, and eventual device reboots.
PR NumberSynopsisCategory: RPD Next-hop issues including indirect, CNH, and MCNH
1851629
Minor		Next-hop APIs to support LDP stitching cases over BGP routes pointing to list of indirects
Product-Group=evo
Severity=Minor		On all Junos and Junos Evolved platforms this is an enhancement for Nexthop APIs to support LDP stitching cases over BGP routes pointing to list of indirects next-hops.
PR NumberSynopsisCategory: RPD route tables, resolver, routing instances, static routes
1832162
Major		rt_instance memory leak on bulk configuration changes
Product-Group=evo
Severity=Major		A memory leak of approximately 17MB to 38MB in the rt_instance memory block occurs when all three components routing instances, interfaces, and protocols are deactivated and immediately activated or rolled back without a delay. This is seen in large-scale environments (e.g., 4k routing instances) with sharding and NSR enabled. A 4-minute delay between deactivation and activation or rollback prevents the issue. This is a memory leak only, with no direct service or traffic impact.
PR NumberSynopsisCategory: ACX7000 interface software related issues.
1869296
Major		100G links do not come up with TX LOS on ACX7100-32C platform
Product-Group=evo
Severity=Major		On ACX7100-32C platform, when the device is rebooted, 100G links do not not come up with TX LOS.
PR NumberSynopsisCategory: Express ZX PFE L3 Features
1842666
Minor		IPv6 Neighbor Discovery Packets Punted to RE Instead of Transiting via Core Interface
Product-Group=evo
Severity=Minor		In a cross-connect (L2Circuit) scenario, IPv6 Neighbor Advertisement (NA) and Neighbor Solicitation (NS) packets originating from the CE side are being punted to the Routing Engine (RE) instead of passing through the L2Circuit over the core interface.
1867003
Major		IS-IS adjacency between CE devices is not established over L2 circuit
Product-Group=evo
Severity=Major		On Junos OS Evolved PTX10003 platform, In scenario where IS-IS (Intermediate System to Intermediate System) adjacency forming between CE (Customer Edge) devices over Layer2 circuit ("encapsulation vlan-ccc") through PTX10003 as a PE (Provider Edge) in this connectivity, IS-IS hello (IIH) packets from host CE incorrectly direct to connected PE instead of forwarding it to the remote CE over this Layer2 circuit. This is causing failure to establish the IS-IS adjacency between the CE devices. In certain upgrade scenarios where a PE device is upgraded to an affected release, the IS-IS adjacency between the CE devices may fail to establish causing service imapct.

 

 

24.4R1-S3-EVO - List of Known issues 

PR NumberSynopsisCategory: Fabric for LC1300 and SIB3
1849563
Major		[fabric] [fabrictag] aegon: EVO PTX10008:Aegon: found voq drop during sending 16% traffic (not 16.6%) and gracefully offline 5 sibs
Product-Group=evo		When multiple SIBs are offlined in succession, at times it can result in continuous traffic drops.

Resolved In:
1857187
Minor		[fabric] [fabrictag] aegon : EVO PTX10008:Aegon: pfes go to fault after several sib and pfe restart together
Product-Group=evo		If multiple SIBs and PFEs are restarted together, fatal interrupt can be seen and the PFEs will remain in fault state.

Resolved In:
PR NumberSynopsisCategory: Express BT PFE L3 Features
1859044
Major		The IPv6 firewall filter applied on loopback 0 Is not processing NS and NA packets.
Product-Group=evo		On PTX platforms running the Junos Evolved Operating System (OS), an Internet Protocol Version 6 (IPv6) filter applied to the Loopback 0 interface does not process incoming Neighbor Solicitation (NS) and Neighbor Advertisement (NA) packets in the Neighbor Discovery Protocol (NDP), though it does not impact traffic.

Resolved In: evo:23.2R2-S4-J2-EVO evo:23.4R2-S5-EVO evo:24.2R2-S1-EVO evo:24.4R2-EVO evo:24.4R2-S2-EVO evo:25.2R1-EVO evo:25.3R1-EVO
PR NumberSynopsisCategory: DNX L2 related features
1886421
Minor		EVO ACX7K - VSTP when associated with an IRB interface sees different Bridge Root-IDs
Product-Group=evo		When VSTP is configured on an L2 IFL that also shares a bridge domain with an IRB IFL, VSTP fails to converge on the ACX7K devices. Because both the VSTP-enabled IFL and IRB IFL belong to the same BD, the input IFL gets overwritten with the IRB's IFL.

Resolved In:
PR NumberSynopsisCategory: Issues related to debug utilties - objmon, objshell/Dashboard
1835388
Major		The Netconf output for xml format shows tag under ping failure situation
Product-Group=evo		On all Junos OS Evolved platforms, the Netconf output for xml format shows tag under ping failure situation. It is only an XML display output issue and has no impact to network traffic.

Resolved In: evo:23.2R2-S4-EVO evo:24.4R2-EVO evo:24.4X200-D10-EVO evo:25.1R1-EVO evo:25.2R1-EVO junos:24.4R2 junos:25.1R1 junos:25.2R1
PR NumberSynopsisCategory: Interface PRs defect & enhancement requests
1880635
Major		Interface remains administratively down state, fails to recover after execution of CLI command "request interface bounce"
Product-Group=evo		On Junos OS Evolved PTX platforms, executing the CLI command "request interface bounce" causes the member Ethernet interface (et-x/x/x), which is part of the Aggregated Ethernet (AE) bundle, to remain in an administratively down state and not recover after the defined interval. As a result, this condition can cause a traffic impact.

Resolved In: evo:23.4R2-S5-EVO evo:24.2R2-S2-EVO evo:24.4R2-EVO evo:24.4R2-S1-EVO evo:25.2R1-EVO evo:25.3R1-EVO
PR NumberSynopsisCategory: ACX7332 & ACX7348 Platform Software
1809091
Minor		ACX7024 sees a vmcore and restarts or potentially hangs on reboot
Product-Group=evo		ACX7024 sees a vmcore and restarts or potentially hangs on reboot

Resolved In: evo:23.4R2-S5-EVO evo:24.2R2-S2-EVO evo:24.4R1-EVO junos:24.4R1
PR NumberSynopsisCategory: OSPF routing protocol
1865621
Minor		IPSEC OSPF3 realm sessions do not stay UP
Product-Group=evo		IPSEC OSPF3 realm sessions do not stay UP when you have the same interface configured in both ospf3 realm and non-realm. When the aggregate interface goes down for any reason (physical link issue or something else) when it recovers the realm session will not come back online.

Resolved In:

 

 

Modification History

First publication 2025-06-27