18.3R3-S3: Software Release Notification for JUNOS Software Version 18.3R3-S3

Warning: With VPLS/Bridge-Domain environment, an MX/EX9200 Series router with Trio-based MPCs running software version 18.3R3-S3. The MPCs may experience NH memory leak in the PFEs when using integrated routing and bridging (IRB) interface participating in the VPLS/Bridge-domain instance.
Junos Software service Release version 18.3R3-S3 is now available.

18.3R3-S3 - List of Fixed issues

PR Number	Synopsis	Category: DOT1X
1504818	Authentication failure might occur on captive-portal Product-Group=junos	On EX/MX/QFX/SRX platforms in case of captive-portal without dot1x stanza, when receiving the filter from the RADIUS for captive-portal user might lead to authentication failure for that user. This issue is seen only in the captive-portal configuration with RADIUS filter when dot1x stanza is not present.
PR Number	Synopsis	Category: EX4300 Platform
1502726	Traffic loss might be seen with framing errors or runts if MACsec is configured on EX4300 Product-Group=junos	On EX4300 platform with Media Access Control Security (MACsec) configured, if there is high traffic flowing through the MACsec enabled link, increasing framing errors or runts statistics might be seen in the output of "show interfaces extensive <>" for the affected interface. Traffic loss might also happen due to this issue.
PR Number	Synopsis	Category: QFX Access control list
1499918	Traffic drop might be observed after modifying FBF firewall filter Product-Group=junos	On QFX5K platforms, after making changes in filter-based forwarding (FBF) firewall filter that is configured with multiple terms or different routing instances, traffic drop might be observed.
PR Number	Synopsis	Category: QFX PFE CoS
1510365	Traffic might be forwarded to wrong queue when fixed classifier is used Product-Group=junos	If L2 access or vlan bridge IFL is created after fixed classifier is applied, the traffic matching the fixed classifier might be forwarded in unexpected queue, it might cause congestion unexpectedly hence there is traffic impact.
1510365	Traffic might be forwarded to wrong queue when fixed classifier is used Product-Group=junosvae	If L2 access or vlan bridge IFL is created after fixed classifier is applied, the traffic matching the fixed classifier might be forwarded in unexpected queue, it might cause congestion unexpectedly hence there is traffic impact.
PR Number	Synopsis	Category: QFX PFE L2
1474142	Traffic might be affected if composite next hop is enabled Product-Group=junos	On QFX5000 and EX4600 platforms with composite next hop enabled, traffic loss would occur when deleting leaked routes with composite next hop.
PR Number	Synopsis	Category: Border Gateway Protocol
1396344	Processing a large scale as-path regex will cause the flap of the route protocols Product-Group=junos	When 'as-path-group' is configured under BGP, if a configuration with a large scale as-path regex is committed, the route protocols flap might be seen.
1499977	The rpd may crash if the import policy is changed to accept more routes that exceed the teardown function threshold Product-Group=junos	On all platforms with BGP max-acceptance prefix limit (accepted-prefix-limit with teardown action) configured, the rpd crashes may occur when a policy change causes the number of routes being imported cross the configured threshold value and teardown action is being performed by the router.
PR Number	Synopsis	Category: MX Platform SW - UI management
1498538	SNMP polling does not show correct PSM jnxOperatingState when one of the PSM Inputs failed Product-Group=junos	SNMP polling does not show correct PSM jnxOperatingState when one of the PSM Inputs failed or not exists
PR Number	Synopsis	Category: EVPN Layer-2 Forwarding
1503657	The MAC address of the LT interface might not be installed in the EVPN database Product-Group=junos	In EVPN-VXLAN (Ethernet Virtual Private Network - Virtual Extensible LAN) scenario if the LT (Logical Tunnel) interface is under the bridge-domain of the EVPN-VXLAN instance, the MAC address of the LT interface might not be installed in the EVPN database. Thus no type-2 EVPN route is generated for the LT interface which results in unnecessary flooding and replication by the remote EVPN peer in the network.
PR Number	Synopsis	Category: Express PFE L2 fwding Features
1442587	The PMTUD might not work for both IPv4 and IPv6 if the ingress L3 interface is an irb Product-Group=junos	Path MTU Discovery (PMTUD) is a standardized technique for determining the maximum transmission unit (MTU) size on the network path between two IP hosts, usually with the goal of avoiding IP fragmentation. On QFX10K platforms, the PMTUD might not work for both IPv4 and IPv6 if the ingress L3 interface is an irb. The corresponding ICMP Fragmentation Needed packet to the sender might be dropped silently, then PMTUD fails. This issue has service impact.
PR Number	Synopsis	Category: Libjtask for RPD tasks, scheduler, timers, memory, and slip
1472643	Performing back-to-back rpd restarts might cause rpd to crash Product-Group=junos	On all Junos platforms, after performing back-to-back rpd restarts, rpd might crash. The rpd core may be observed after a timeout of 10 mins.
PR Number	Synopsis	Category: Adresses ALG issues found in JSF
1462984	The H323 call with NAT64 cannot be established on the SRX5000 line of devices. Product-Group=junos	On SRX5000 platforms, the H323 call with NAT enabled cannot be established when the H323 GK (Gatekeeper) works in direct mode.
PR Number	Synopsis	Category: JSR Infrastructure
1505864	SRX5k fails to upgrade to some Junos versions directly from 15.1X49 with "ERROR: unsupported h/w" Product-Group=junos	On SRX5000 series, when upgrading Junos from a 15.1X49 release to specific higher Junos releases, the installation will fail with the message "ERROR: unsupported h/w". Affected target releases are Junos 18.4R3-S2 and 18.4R3-S3.
PR Number	Synopsis	Category: User Firewall related issues
1499090	Don't use capital characters for source-identity when using "show security match-policies" cmd. Product-Group=junos	When using "show security match-policies" cmd to match a policy with source-identity configured, only the non-capital source-identity name can be matched by policy.
PR Number	Synopsis	Category: Layer 2 Circuit issues
1512834	The rpd might crash when deleting l2circuit configuration in a specific sequence Product-Group=junos	If l2circuit local-switching is enabled with connection-protection, the rpd could crash in the following configuration change sequence. 1. First, delete the logical interface (IFL) used by a l2circuit and commit the change. 2. Then, delete the corresponding l2circuit configuration. The rpd could crash after committing the change.
PR Number	Synopsis	Category: Layer 2 Control Module
1505710	The l2cpd crash might be seen if adding/deleting ERP config and then restart l2cpd Product-Group=junos	Core files are generated if you add or delete ERP configuration multiple times and restarted l2cpd or rebooted the box. If this issue is happened, l2cpd does not recover again and generates core file continuously.
PR Number	Synopsis	Category: Layer2 forwarding on EX/NTF/PTX/QFX
1512802	[MX] l2ald memory leak upon addition/deletion of vxlan routing-instances and interfaces Product-Group=junos	On MX series platforms, l2ald (layer 2 address learning daemon) memory leaks upon addition/deletion of vxlan routing-instances and interfaces.
PR Number	Synopsis	Category: Path computation client daemon
1472825	Manually configured ERO on NS controller lost when PCEP session bounced Product-Group=junos	On all Junos platform with Path Computation Element Protocol (PCEP) enabled, if PCEP session bounced druing Routing Engine (RE) switchover on a LSP ingress router, unexpacted delete message might be sent from Path Computation Client (PCC) to Path Computation Element (PCE) with North Star (NS) controller. In the end, manually configured explicit route object (ERO) for RSVP-TE based label switched path (LSP) on NS controller will be lost. However, traffic go through ERO set on NS controller is still normal.
PR Number	Synopsis	Category: PTP related issues.
1451950	FPC core may be seen after changing the configuration of PTP or Synchronous Ethernet. Product-Group=junos	On the ACX/MX/QFX platform with PTP (Precision Time Protocol)/SyncE (Synchronous Ethernet) enabled, if configuration changes for the PTP/SyncE are combined with multiple events, the FPC core might be seen.
1458581	The "FPC X major errors" alarm may be raised after committing the PTP configuration change Product-Group=junos	On MX router with MPC5/MPC6/MPC7/MPC8/MPC9/MPC10 installed environment, after committing the PTP configuration change, the "FPC X major errors" alarm may be raised. This issue may cause interface flap and traffic loss.
PR Number	Synopsis	Category: QFX platform optics related issues
1497947	lcmd core seen on QFX5210064C Product-Group=junosvae	The LCMD process is the Linux Chassis Management Management Daemon. Due to a bug in the I2C handling in the daemon, a core dump may be seen. There is no specific user-visible trigger for the core dump and you may see several erroneous alarms when the core dump occurs. These should clear after the daemon automatically restarts
PR Number	Synopsis	Category: QFX PFE Class of Services
1472771	DSCP marking might not work as expected if the fixed classifiers are applied to interfaces on QFX5000/EX4600 platforms Product-Group=junos	On QFX5000/EX4600 platforms, if the interfaces are configured with the fixed classifiers, when some specific configuration changes are committed, for example, the same forwarding-class is applied to two different interfaces at the same time, and then the forwarding-class for one of the interfaces is changed and committed to a different value, the Differentiated Services code point (DSCP) marking might not be able to work as expected since both physical interfaces are still having the same forwarding-class mapped in the hardware table due to this issue.
PR Number	Synopsis	Category: QFX L2 PFE
1497993	Traffic might get dropped if AE member interface is deleted/added or a SFP of the AE member interface is unplugged/plugged Product-Group=junos	On QFX5K/EX46xx platforms, if STP is configured on vlan but the AE interface which is part of that vlan is not configured with STP, after an AE member interface is deleted or a SFP of the AE member interface is unplugged, and when the deleted AE member interface is added back or the unplugged SFP is plugged again, traffic via that AE interface might get dropped. LACP and LLDP traffic are not affected by this issue.
PR Number	Synopsis	Category: Resource Reservation Protocol
1505834	The rpd process might crash with RSVP configured in a rare timing case Product-Group=junos	On all Junos platforms running with the Resource Reservation Protocol (RSVP) configured, when some socket error happens, RSVP might be unable to send message, however the counter for sent messages has already been increased due to the software design defect. The wrong counter might lead to the rpd process crash. It's a rare timing issue and it might be more likely to happen in a scaled scenario.
PR Number	Synopsis	Category: SFW, CGNAT on MS-MIC/MS-MPC (XLP)
1496211	The B4 might not able to establish the softwire with AFTR Product-Group=junos	In dual-stack lite (DS-Lite) scenario, if the DS-Lite softwire-initiator (such as B4) and the Address Family Transition Router (AFTR, it acted as softwire-concentrator) is deployed with service-set included multiple softwire-rules, the wrong rule-id might be chosen for the traffic including either normal data packet or Port Control Protocol (PCP) mapping requested from the basic bridging broadband (B4) subscribers. It might cause the failures on the allocation of subscribers and choice of softwire sessions, then the subscribers behind the B4 are unable to establish a softwire (an IPv4-over-IPv6 tunnel) to AFTR.
PR Number	Synopsis	Category: Trio pfe bridging, learning, stp, oam, irb software
1513509	During route table object fetch failure, FPC may crash Product-Group=junos	Due to rare timing issue, the FPC might crash because of route table object fetch failure in EVPN multihoming scenario.
PR Number	Synopsis	Category: Virtual Router Redundancy Protocol
1506747	Unexpected dual VRRP backup state might happen after performing two subsequent RE switchovers with 'track priority-hold-time' configured Product-Group=junos	On all Junos platforms with dual REs installed, if 'track priority-hold-time' and 'track interface' are enabled in the same VRRP groups, after performing the second RE switchover in a shorter time than the group 'track priority-hold-time' configured timer after the first RE switchover, it may cause unexpected dual VRRP backup state followed by VRRP master re-election, and the traffic forwarded over VRRP VIP could be affected during this time.

18.3R3-S3 - List of Known issues

PR Number	Synopsis	Category: EX9200 Platform
1448368	EX9214 : Error "errorlib_set_error_log(): err_id(-1718026239)" are observed after reboot and macsec enabled link flap Product-Group=junos	On the EX9214 device, if the MACsec-enabled link flaps after reboot, the error "errorlib_set_error_log(): err_id(-1718026239)" is observed.
PR Number	Synopsis	Category: EX2300/3400 PFE
1462155	The fxpc crashes due to PFEMAN_RT thread and BCM linkscan thread get into a deadlock Product-Group=junosvae	In certain conditions, PFEMAN_RT thread and BCM linkscan thread get into a deadlock causing watchdog timeout.
PR Number	Synopsis	Category: QFX L3 data-plane/forwarding
1481987	Multicast traffic loss could be seen in certain conditions while enabling IGMP snooping under EVPN-VXLAN ERB scenario Product-Group=junos	On QFX5110 & QFX5120 platform, which is running as Layer 3 VxLAN gateway, if "igmp-snooping" is enabled in partial but not for all bridge-domains, multicast traffic loss could be observed in non-igmp snooping bridge-domains.
PR Number	Synopsis	Category: ACX PFE
1407098	High CPU utilization of fxpc process may be observed with class-of-service changes on interfaces Product-Group=junos	On ACX5048/ACX5096 platforms, when applying COS configurations (schedulers related) on interfaces, the CPU utilization on fxpc process might be seen. And it might affect service.
PR Number	Synopsis	Category: "agentd" software daemon
1401817	The na-grpcd log file is not rotated and keeps growing until Routing Engine is out of disk space. Product-Group=junos	In JET/Telemetry scenario, the Telemetry log file is not rotated and keep growing until Routing Engine (RE) is out of disk space, this might cause unexpected impact of RE, and eventually lead to RE crash. The fix has now been provided to set max allowable size to 50M and once the file reaches its max size, it will get rotated and compressed.
PR Number	Synopsis	Category: BBE Remote Access Server
1402653	The subscribers might need to take login retry in the scenario with high usage of the address pool Product-Group=junos	On all Junos platforms running in subscriber scenario with address pool configured, if the address pool has high usage so that only few addresses are free to allocate, when there are subscribers logout and login, the released address by one subscriber might get re-used and allocated to the other subscriber very soon. Due to this issue, syslog error messages might be seen, and the affected subscriber might need to take retry for login.
PR Number	Synopsis	Category: EVPN control plane issues
1485377	The ARP entry is gone from kernel after adding and deleting the virtual-gateway-address Product-Group=junos	On MX/QFX10002/QFX10008/QFX10016 devices within an EVPN-MPLS active-active multi-homing mode, when adding and deleting the virtual-gateway-address, the ARP entry to CE might disappear from the kernel.
PR Number	Synopsis	Category: Flow Module
1489276	GRE/IPSec tunnel might not come up when 'set security flow no-local-favor-ecmp' command is configured Product-Group=junos	On SRX or vSRX clusters, when 'set security flow no-local-favor-ecmp' is configured, GRE/IPSec tunnel might not come up.
PR Number	Synopsis	Category: Layer 2 Control Module
1473610	ERP might not come up properly when MSTP and ERP are enabled on the same interface. Product-Group=junos	When both MSTP and ERP are enabled on the same interface, then ERP does not come up properly.
PR Number	Synopsis	Category: Layer2 forwarding on EX/NTF/PTX/QFX
1505976	VRRPv6 might not work in EVPN scenario Product-Group=junos	In EVPN scenario with VRRPv6 used, the ethernet source mac address might be used for IPv6 mac-ip binding when the NA is sent from VRRPv6 master, as this unexpected behavior is triggered on regular intervals, it causes the entries to keep refreshing in EVPN database because NS from VRRPv6 master changes the mac-ip binding. Hence it has traffic impact.
PR Number	Synopsis	Category: MX104 Software - Chassis Daemon
1453893	FPC/PFE crash may happen with ATM MIC installed in the FPC Product-Group=junos	FPC crash on MX240 and MX2020 routers or Packet Forwarding Engine crash on MX104 routers might happen when the MIC-3D-8OC3-2OC12-ATM is installed and ATM interface is configured.
PR Number	Synopsis	Category: FreeBSD Kernel Infrastructure
1345506	The FPC might fail to boot after toggling back and forth between 15.1 release (any release where 'JUNOS OS runtime' < 20180321) and a later release Product-Group=junos	After upgrading and downgrading between an older 15.1 release (any release where 'JUNOS OS runtime' < 20180321) without the fix for this PR and a later release that has extra optional platform packages (e.g 16.1), the system running 15.1 gets confused as to the state of such packages and discards them upon the the next upgrade to a later release. Thus, for example, changing Junos version between 16.1 -> 15.1 -> 16.1 may result in some PFE packages missing and therefore may prevent some MPCs from booting.
PR Number	Synopsis	Category: Kernel Stats Infrastructure
1462986	Slow response from SNMP might be observed after an upgrade to Junos OS Release 19.2R1 and later. Product-Group=junos	Slow response introduced with PR/1411303 fix, is getting resolved with this PR.
PR Number	Synopsis	Category: PTP related issues.
1507782	CLI knob to configure announce-interval as -3 so that the announce messages rate will be set to 8pps Product-Group=junos	In PTP environment some vendor devices acting as slave expecting announce messages at an interval of -3 (8pps) from upstream master device. As of today announce message are configurable in range of 0 to 3. To support the above requirement engineering provided a hidden cli knob "set protocol ptp master announce-interval -3". In the networks/design where we have this requirement we can configure the hidden cli otherwise regular cli which is in the range (0 to 3) can be configurable. Both the cli knobs are mutually exclusive, commit error is expected if both are configured. This new change is applicable to ACX platforms only excluding ACX5k.
PR Number	Synopsis	Category: QFX ISSU Infrastructure
1490799	After ISSU/ISSR, a port using SR4/LR4 optics may not come up Product-Group=junos	On QFX5100/5200 platforms, a port using SR4/LR4 optics might not come up after ISSU (In-Service Software Upgrade)/ISSR (In-Service Software Reboot).
PR Number	Synopsis	Category: QFX L2 PFE
1500825	The ERPS might not work correctly on QFX5k Product-Group=junos	On QFX5k platforms, Ethernet ring protection switching (ERPS) might not work correctly due to ERPS instance programming failure in hardware which might cause loop in the network.
1515254	On QFX5000 and EX46xx with VXLAN enabled , ARP request may get dropped if storm control is configured Product-Group=junos	ARP request get dropped on QFX5000 and EX46xx devices when all of the following condition are met. 1.Storm control is enabled on any of the port. 2.VXLAN is enabled 3.Arp-suppression is enabled.
PR Number	Synopsis	Category: platform related PRs on SRX branch platforms
1450046	All ingress packets are dropped if the traffic transit network is also the same network for LTE mPIM internal management. Product-Group=junos	On SRX3xx platforms with the LTE mPIM in use, if the traffic transit network is also the same network for LTE mPIM internal management, all ingress packets are dropped.
PR Number	Synopsis	Category: MPC7/8/9 Interface Issues
1441816	Egress stream flush failure and traffic blackhole might occur Product-Group=junos	Egress stream flush failure and silent dropping of traffic could occur in a rare occasion for a repeatedly flapping link on MPC7E, MPC8E, MPC9E cards, MX204 and MX10003.

Knowledge Base

18.3R3-S3 - List of Fixed issues

18.3R3-S3 - List of Known issues