Alert Type

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

Product Affected

ACX PTX QFX

Alert Description

Junos Software Service Release version 24.2R2-S5-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

For your review

Solution

Junos Software service Release version 24.2R2-S5-EVO is now available.

24.2R2-S5-EVO - List of Fixed issues

PR NumberSynopsisCategory: Software build tools (packaging, makefiles, et. al.)
1663426
Major		NETCONF: RPC get & get-configuration display invalid json format response for an OpenConfig when adds a routing-options configuration
Product-Group=evo
Severity=Major		After adding a "routing-options" configuration via OpenConfig operation, subsequent "get" and "get-configuration" may display an invalid JSON format.
PR NumberSynopsisCategory: "agentd" software daemon
1929823
Major		The sysd process crashes with error logs upon exceeding its memory limit
Product-Group=evo
Severity=Major		On Junos OS Evolved platforms with telemetry streaming configured, the sysd (System Daemon) process crashes on the backup RE (Routing Engine), and error logs are observed when sysd memory usage continues to grow over time, and the memory limit is exceeded. This issue is observed when the 64-bit sysd consumes more memory than the configured system limit when the device has been running for a long time (typically more than 100 days) in the dual RE scenario.
PR NumberSynopsisCategory: PFE L2 forwarding features on BT based platforms
1890878
Major		On PTX EVO platforms in EVPN-VXLAN scenario traffic will not egress out of the irb next-hop when the bridge-domain doesn't have VXLAN VNI configured
Product-Group=evo
Severity=Major		On all PTX Evolved platforms that support EVPN-VXLAN (Ethernet VPN-Virtual Extensible LAN), when the PTX router acts as a MAC-VRF (Media Access Control - Virtual Routing and Forwarding) EVPN gateway, it will fail to forward traffic routed through the 'irb' interface due to packets being discarded at PFE (packet forwarding Engine), causing packet loss.
1928605
Minor		IRB routed traffic is dropped when both hosts are learned on the same SP-style Layer 2 interface on EVO-PTX platforms
Product-Group=evo
Severity=Minor		On all Junos OS Evolved PTX platforms, IRB (Integrated Routing and Bridging) routed traffic is dropped when both source and destination hosts are reachable through the same Service Provider (SP)-style Layer 2 IFL (Logical Interface) and associated IRB interface.
PR NumberSynopsisCategory: BX PFE firewall issues
1877486
Minor		Ethernet-switching flood filter stops working when policer action is added
Product-Group=evo
Severity=Minor		On BX-based Junos OS Evolved PTX platforms, when a flood filter with a policer is applied together with VLAN interface configuration in a single commit, the filter may not be properly installed, even though the commit is successful. As a result, the flood filter does not function as intended, leading to degraded traffic handling and performance issues.
PR NumberSynopsisCategory: QFX Control Plane VXLAN
1921796
Minor		Traffic dropped after priority change in VRRP with EVPN-VxLAN scenario
Product-Group=evo
Severity=Minor		On all Junos and Junos Evolved platforms, in Virtual Router Redundancy Protocol (VRRP) with Ethernet Virtual Private Network - Virtual Extensible Local Area Network (EVPN-VXLAN) scenario, when VRRP priority is changed, the VRRP virtual Media Access Control (MAC) address can remain pinned as a static entry on the remote device. As a result, MAC movement does not occur correctly, and VRRP packets are dropped on the leaf device. This impacts VRRP operation after priority changes.
PR NumberSynopsisCategory: Host path software for ACX platform
1889637
Major		DHCP clients do not come up when VRF leak and "dhcp-relay" with "no-snoop" are configured under a routing-instance
Product-Group=evo
Severity=Major		On all Junos OS Evolved ACX7K Series platforms, when DHCP (Dynamic Host Configuration Protocol) relay mode is used within a routing-instance scenario, DHCP clients fail to come up because DHCP offer packets are being dropped.
PR NumberSynopsisCategory: Layer 3 forwarding, both v4+v6
PR NumberSynopsisCategory: DNX platform MPLS FRR features
1906364
Major		Underlay traffic interruption due to nexthop HOLD state triggered by delayed ARP refresh
Product-Group=evo
Severity=Major		On all Junos Evolved ACX platforms, underlay traffic is interrupted when ARP(Address Resolution Protocol) request packets required for refresh are dropped due to congestion or ratelimiting conditions. As a result, the nexthop entry temporarily transitions to a HOLD state in hardware even though ARP later recovers in the control plane. Traffic resumes only after the forwarding state is refreshed.
PR NumberSynopsisCategory: JUNOS Dynamic Profile Configuration Infrastructure
1930036
Major		High memory usage is showing, when we configure unsupported licensing feature
Product-Group=evo
Severity=Major		On all Junos EX and QFX platforms operating in an EVPN (Ethernet Virtual Private Network) environment, this issue occurs when the CLI command 'licensing hourly update' is executed on a device that does not support the licensing feature.
PR NumberSynopsisCategory: EVO ARP related PRs
1934771
Minor		PyEZ Issue, failing on RPC request "show arp interface <>" to EVO platforms
Product-Group=evo
Severity=Minor		On all Junos Evolved platforms, on invalid interface fetching, display error is seen on "show arp interface <>" command.
PR NumberSynopsisCategory: Issues related to evo operations - libevo infra, typeinfo ..
1874238
Major		EVO resource leak due to a problem on objmon
Product-Group=evo
Severity=Major		objmon running on routing-engine never releases net:: juniper:: evlruntime:: indexrelease:: IndexReleaseConfirm objects that were generated by several applications, which causes SDB memory exhaustion. This is tracked under TSB107540 [juniper.net]
PR NumberSynopsisCategory: EVO Netstack Juniper Tunnel Driver Module
1919313
Major		The LDP session does not come up when an IPsec SA is configured under OSPFv3
Product-Group=evo
Severity=Major		On Junos Evolved platforms, when Open Shortest Path First version 3 (OSPFv3) Internet Protocol Security (IPsec) SA is applied at the interface (IFD/IFL) level, Label Distribution Protocol (LDP) is able to discover the neighbor via User Datagram Protocol (UDP) Hellos, but fails to bring up the Transmission Control Protocol (TCP) session, preventing the LDP session from becoming operational. Disabling the OSPFv3 IPsec SA immediately restores normal LDP operation. During the service impact, the session will be down and traffic will not be send. Once the LDP session comes up, traffic can be routed through it.
PR NumberSynopsisCategory: EVO L2 Control Plane PRs
1914423
Major		On-change telemetry events dropped when l2ald telemetry queue memory limit is not configured
Product-Group=evo
Severity=Major		On all Junos and Junos OS Evolved platforms, when l2-learning telemetry is enabled without explicitly configuring a memory limit for the l2ald (Layer 2 Address Learning Daemon) telemetry queue, the default memory limit is not applied. As a result, all on-change telemetry events are dropped.
PR NumberSynopsisCategory: EVO linux defects & enhancement requests
1939674
Major		RTC time sync delay after reboot on Junos OS Evolved platforms
Product-Group=evo
Severity=Major		On all Junos OS Evolved platforms, due to linux kernel issue, periodical sync from system time to RTC (Real-Time Communication) every 11min stops working when system time moves to backwards.
PR NumberSynopsisCategory: EVO TCP AO module
1924030
Major		BGP/LDP sessions flap due to TCP sequence number wraparound when TCP-AO is enabled
Product-Group=evo
Severity=Major		On all Junos OS Evolved platforms, Border Gateway Protocol (BGP) or Label Distribution Protocol (LDP) sessions will intermittently flap when Transmission Control Protocol-Authentication Option (TCP-AO) is enabled under high traffic or long-lived connections due to TCP sequence number rollover, leading to TCP authentication failures. The issue is primarily observed in interoperability scenarios and does not cause system crashes.
PR NumberSynopsisCategory: mgd, ddl, odl infra issues
1867821
Major		The "ui-gnmi-pubd.log" file growth may cause disk space issues on all Junos OS Evolved platforms
Product-Group=evo
Severity=Major		On all Junos OS Evolved platforms, when telemetry is enabled and an active gNMI subscription includes a configuration path, the "ui-gnmi-pubd.log" file will grow continuously without log rotation or archival. This behaviour will lead to potential disk space exhaustion over time, however, there is no traffic impact due to this issue.
PR NumberSynopsisCategory: Port Mirroring feature on express PFE
1916382
Minor		Network packets on the self-mirrored file shows the same timestamp on every packet with self-mirroring function enabled
Product-Group=evo
Severity=Minor		On all Junos Evolved platforms, with On-device packet capture or self-mirroring function enabled, the copied packets into the PCAP (Packet Capture) file shows the same timestamps for every packet. This issue has no service impact.
PR NumberSynopsisCategory: Enhanced Broadband Edge support for firewall
1928462
Major		FPC crash occurs after configuration changes are made to a service-filter on specific MX platforms
Product-Group=evo
Severity=Major		FPC crash and aftd-trio core-dump will be observed on MX platforms supporting MPC10E, MPC11E, LC9600 line cards, and MX304 after configuration changes were made to a service-filter which was in use by BBE subscribers.
PR NumberSynopsisCategory: ACX7348 PTP
1775585
Major		[Clocking Solution]:ACX7348:PTP and SyncE not working properly after RE switch over
Product-Group=evo
Severity=Major		In Re switchover case, there is sxe ifl mapping with front end port in filters not going as expected . Due to this , the interface associated with slave port sends announce/sync captured from adjacent router mx480 . this behaviour not seen if I deactivate all other master ports in the router. This is evident that filter mapping are going incorrect after the RE switchover .
1793926
Major		[Clocking Solution]:ACX7348: PTP performance is not working as expected for asymmetry config
Product-Group=evo
Severity=Major		This is day-1 issue of jnpr servo. It exist's on all ACX platforms where JNPR servo runs. Once the asymmetry configured at slave port, The error propagated to the down stream eventually cause this this perf issue of spike .
1892686
Major		PTP delay message sent from different LAG after RE switchover
Product-Group=evo
Severity=Major		On Junos OS Evolved ACX7332 and ACX7348 platforms, after Routing Engines( RE) switchover the Precision Time Protocol (PTP) delay message is sent from different REs when Link Aggregation Group (LAG) members are configured on different Flexible PIC Concentrators (FPCs) leading to PTP timing discrepancy.
PR NumberSynopsisCategory: ACX7509 Linecard (FPC) related issues
1931077
Major		CRC errors and packet loss are being observed at the peer device when using 1G fibre optic connections
Product-Group=evo
Severity=Major		On Junos OS Evolved ACX7509, ACX7348, ACX7332, and ACX7100-32C platforms with 1G fibre Optics, when the Inter-Packet Gap (IPG) setting intermittently falls below the IEEE minimum requirement of 8 bytes, and traffic passes through the PHY, certain receiving devices are sensitive to this reduced IPG, which leads to CRC (Cyclic Redundancy Check) errors and packet loss on the peer device connected to 1G fibre optics connection.
PR NumberSynopsisCategory: jdhcpd daemon
1927449
Major		Jdhcpd cores generated after upgrade
Product-Group=evo
Severity=Major		jdhcpd cores seen after upgrade with dhcpv6 for IANA/PD
1939685
Minor		Insert command not working for "dhcp-local-server group" hierarchy
Product-Group=evo
Severity=Minor		Insert command not working for "dhcp-local-server group" hierarchy, below error is seen: user@host# insert system services dhcp-local-server group servers-1 after syntax error, expecting `after' or `before'. user@host# insert system services dhcp-local-server group servers-1 bef syntax error, expecting `after' or `before'.
PR NumberSynopsisCategory: Layer2 forwarding on EX/NFX/PTX/QFX
1928530
Critical		A buffer overflow during IPv6 NDP operations in an EVPN environment caused segmentation faults leading to FPC crash files and repeated reboots
Product-Group=evo
Severity=Critical		On JunOS MX240/MX480/MX960/MX2008/MX2010/MX2020 platforms with MPC10E/MPC11E line cards as well as the MX304 platform, an issue in IPv6 EVPN (Ethernet Virtual Private Network) during NDP (Neighbor Discovery Protocol) resolicitation of a link local target address causes the system to use the IRB link local address in outgoing packets. Stack corruption happens when handling the IRB link local address and resulting in continuous FPC (Flexible PIC Concentrator) reboots (around 3 or 4 times) and crash files generation.
PR NumberSynopsisCategory: Interface PR for LC1202 LC
1846379
Minor		Retimer/gearbox ports on LC1202 line card might take long duration to bring an interface back up
Product-Group=evo
Severity=Minor		On PTX10004/8/16 platforms with LC1202 line card, retimer/gearbox ports on LC1202 line card take longer duration(~1500 msec) to bring an interface back up after short LOS insertion from peer device. This breaks sub-second hold-time down feature. The code fix enabled 'fast linkup' feature of retimer/gearbox ports. It helped the link to come up faster. Ideally retimer/gearbox ports take 1.5 sec to come up, but with this feature, links come up in 1 sec.
PR NumberSynopsisCategory: Issues related to Junos licensing infrastructure
1925706
Minor		Snmp license polling cause license-check service crash
Product-Group=evo
Severity=Minor		On Junos platforms, a race condition occurs when the Simple Network Management Protocol (SNMP) poller attempts to retrieve device license information while subscriber management and SNMP policing features are in use. This condition causes the license-check process to encounter a null pointer and generate a core dump. There is no traffic or service impact. However, license information retrieval through SNMP polling fail until the license-check service recovers.
PR NumberSynopsisCategory: Multiprotocol Label Switching
1889546
Major		MPLS ping/trace not working for direct peers via routing-instance over MPLS protocols
Product-Group=evo
Severity=Major		On all Junos and Junos OS Evolved platforms, when a routing instance is configured at the destination device, an echo request packet is received over this routing instance interface. This routing instance should have a valid route to reach the source device. But the default routing instance should not have a valid route to reach the source device. This issue is not specific to MPLS ping over SR alone. This issue is applicable for all the protocols MPLS ping.
PR NumberSynopsisCategory: Protocol Independant Multicast
PR NumberSynopsisCategory: Periodic Packet Management Daemon
1931633
Major		PFE crash due to memory corruption when STP is enabled
Product-Group=evo
Severity=Major		On all Junos Platforms, a rare memory corruption condition may occur in the Packet Forwarding Engine (PFE) when Spanning Tree Protocol (STP) is enabled and operating in default (distributed) mode. When the issue is triggered, the PFE crashes and a dc-pfe core file is generated. The exact trigger for the memory corruption is currently unknown.
PR NumberSynopsisCategory: KRT Queue issues within RPD
1931875
Major		The L2Circuit traffic which are resolving over BGP-LU get drop when 'chained-composite-next-hop' for BGP-LU and 'preserve-nexthop-hierarchy' is configured
Product-Group=evo
Severity=Major		On all Junos and Junos Evolved platforms supporting 'chained-composite-next-hop' for BGP-LU (Border Gateway Protocol - Labeled Unicast), when having L2Circuit (Layer 2 Circuit) links configured, with indirect next-hop resolving on BGP-LU prefix, if 'chained-composite-next-hop' enabled for BGP-LU and with 'preserve-nexthop-hierarchy' configured, L2Circuit traffic will get dropped due to failure in installing the forwarding next-hop with labels for L2Circuit service.
PR NumberSynopsisCategory: RPD Next-hop issues including indirect, CNH, and MCNH
1863248
Major		On all Junos OS Evolved platforms, traffic loss will be seen after switching the LSP from SRTE to L-ISIS
Product-Group=evo
Severity=Major		On all Junos OS Evolved platforms with Segment Routing Traffic-Engineering (SRTE) and Labeled- Intermediate System- Intermediate System (L-ISIS) configuration, when a service route is resolved over SRTE route in inet6color.0 and if the SRTE path in inet6color.0 is deactivated/goes down, the SRTE route is deleted and service route starts resolving over L-ISIS. However traffic loss for 20 minutes or more is seen after switching the Label Switched path (LSP) from SRTE to L-ISIS path.
PR NumberSynopsisCategory: PTX10K specific platform PRs
1900735
Major		Evo PTX PFE instance stuck in fault state after restart
Product-Group=evo
Severity=Major		One or more PFEs may transition to fault state if multiple PFEs are restarted rapidly.
PR NumberSynopsisCategory: Issues related to broadband edge apps (PPP, DHCP) on ZT/YT
1927107
Major		FPC might crash with high scale of BBE subscriber
Product-Group=evo
Severity=Major		On MX304 and MX platforms with MPC10, MPC11, or LC9600, the Flexible PIC Concentrator (FPC) might crash when operating with a high scale of Broadband Edge (BBE) subscriber.
PR NumberSynopsisCategory: Virtual Private LAN Services
1806424
Major		The snmp mib walk on jnxVplsPwBindTable fails with vpls routing-instances having multiple mesh-groups
Product-Group=evo
Severity=Major		If VPLS mesh-groups are configured with different neighbours having different vpls-id the SNMP mib walk over jnxVplsPwBindTable might fail with the error Request failed: OID not increasing. No functional impact is seen due to this issue.
PR NumberSynopsisCategory: ACX7000 platform software related issues.
1935793
Major		I2C alarm and traffic drop is seen with a type of QSFP on ceratin ACX platforms
Product-Group=evo
Severity=Major		On Junos Evolved ACX7100-32C, ACX7100-48L, ACX7100-32C-K and ACX7100-48L-K platforms, when QSFP-100G-FR optics which has serial number starting with 2J4 is plugged in, it is observed that the port goes down with I2C(Inter-Integrated Circuit) access failure alarm and traffic is dropped.
PR NumberSynopsisCategory: Express ZX PFE L3 Features
1923943
Major		Routing approachs/protocols sees forwarding issue on Junos OS Evolved PTX10003 platforms
Product-Group=evo
Severity=Major		Routing protocols sees forwarding impact on Junos Evolved PTX10003 platforms when a nexthop transitions between forwardable and hold/reject states, causing the nexthop token to fail reacquisition and leading to unresolved forwarding plane dependencies.

 

 

24.2R2-S5-EVO - List of Known issues

PR NumberSynopsisCategory: Layer 3 forwarding, both v4+v6
1927637
Major		IPv6 frames are incorrectly padded
Product-Group=evo		On all EVO ACX platforms ACX7100-32C/ACX7100-48L/ACX7024/ACX7509/ACX7348/ACX7908, IPv6 frames are incorrectly padded with 0's ethernet/vlan padding (trailer) while sending to the peer device. In our incidence, GTP transit frames with these added paddings are dropped by the sGW (Serving Gateway) which causes service disruption. 5G mobility signaling will be impacted due to this issue.

Resolved In: evo:23.4R2-S8-EVO
PR NumberSynopsisCategory: EVO MACSEC Platform Independent Implementation
1926159
Major		Dropping packets on PTX PE from any ingress PE device adds padding to IPv6 packets going over MPLS L3VPN
Product-Group=evo		On all Junos Evolved PTX series platforms, when acting as egress PE router, it drops padded packets from any ingress PE device. When this occurs, the packets that are discarded are padding to small IPv6 packets going over MPLS L3VPN. If the padding is removed, they are forwarded as expected.

Resolved In: evo:23.4R2-S6-J19-EVO evo:23.4R2-S8-EVO evo:25.4R2-EVO evo:26.2R1-EVO
PR NumberSynopsisCategory: mgd, ddl, odl infra issues
1942540
Major		[evo-acx-series] - Vlans Object causing RPD coredump when committing unsupported config
Product-Group=evo		RPD may crash if vlans is configured under a wildcard group. wild card config: set groups VLANS_GROUP routing-instances <*> vlans <*> switch-options mac-move-limit 1 Applying wildcard group to a routing instance may cause RPD to crash: set routing-instances TEST apply-group VLANS_GROUP

Resolved In:
PR NumberSynopsisCategory: ACX7348 PTP
1937932
Minor		PHY timestamping and PTP performance metrics related show commands are not supported on ACX7348/ACX7332 platforms
Product-Group=evo		On ACX7348/ACX7332 platforms, PHY timestamping and PTP performance metrics related below show commands are not supported. "show ptp performance-monitor short-term" "show ptp path-trace detail" "show ptp phy-timestamping-interfaces detail"

Resolved In: evo:25.4R2-EVO evo:26.1R1-EVO evo:26.2R1-EVO junos:24.4R2-S4 junos:25.4R2 junos:26.1R1 junos:26.2R1
PR NumberSynopsisCategory: PTX10K platform specific fabric PRs
1900242
Critical		Traffic loss seen due to SIB init failures on PTX10016 and PTX10008 platforms
Product-Group=evo		On Junos OS Evolved based PTX10K8 and PTX10K16 platforms, Switch Interface Board (SIB) init failures are observed after system reboot. Traffic loss is seen as SIBs are impacted.

Resolved In: evo:23.2R2-S4-EVO evo:23.2R2-S5-EVO evo:24.4R2-S3-EVO evo:25.3R1-EVO evo:25.4R1-EVO evo:25.4R2-EVO junos:23.2R2-S5 junos:23.4R2-S6 junos:23.4R2-S8 junos:24.2R2-S3 junos:24.4R2-S1 junos:24.4R2-S2 junos:25.2R1-S2 junos:25.2R2 junos:25.4R1 junos:JUNOS_232_R2_S4_EVO_BRANCH
PR NumberSynopsisCategory: PTX10K specific platform PRs
1771483
Major		EVO: RPC "get-power-usage-information" for cli "show chassis power" shows error wtih ODL response
Product-Group=evo		RPC "get-power-usage-information" for cli "show chassis power" shows error wtih ODL response

Resolved In:
PR NumberSynopsisCategory: ZT/YTpfe bridging, learning, stp, oam, irb software
1800466
Major		Hamilton :: LC4800 :: Initial Sync values not streaming
Product-Group=evo		Hamilton :: LC4800 :: Initial Sync values not streaming

Resolved In:

 

Modification History

First publication 2026-05-13