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SOFTWARE REISSUE - 20.3R1-S2-EVO: Software Release Notification for JUNOS Software Version 20.3R1-S2-EVO

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Article ID: TSB17953 TECHNICAL_BULLETINS Last Updated: 19 Jan 2021Version: 7.0
Alert Type:
SRN - Software Release Notification
Product Affected:
PTX and QFX series running Junos Evolved
Alert Description:
Junos Software Service Release version 20.3R1-S2.11-EVO has been replaced with 20.3R1-S2.12 on the Junos software download site.

Junos Software Service Release version 20.3R1-S2.12-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
Solution:

NOTE: Due to a software defect causing the Class Of Service process (COSD) to restart repeatedly, the previous version of 20.3R1-S2-EVO software has been RECALLED and replaced with a new version.

Junos Software service Release version 20.3R1-S2.11-EVO is now RECALLED and REPLACED with 20.3R1-S2.12-EVO

The RECALLED software can be identified by the string "20.3R1-S2.11-EVO" in the image name.
For example, junos-evo-install-ptx-x86-64-20.3R1-S2.11-EVO.iso is the RECALLED ISO install package of the 20.3R1-S2-EVO image.
If you have downloaded the RECALLED images, please do not use them.

The new "spin" release of 20.3R1-S2-EVO is available with the fix for the COSD issue with the released identifiable with "20.3R1-S2.12-EVO".
This SRN is updated with the new spin number - "20.3R1-S2.12-EVO" of the Junos Evolved software package. The COSD issue is being tracked via PR1548014.

Junos Software service Release version 20.3R1-S2.12-EVO is now available.

20.3R1-S2-EVO - List of Fixed issues
PR Number Synopsis Category: BGP Segment Routing
1550736 The rpd crash might be seen when BGP service route is resolved over color-only SRTE policy
Product-Group=evo
In BGP segment routing traffic engineering (SRTE) scenario, when BGP service route is resolved over color-only SRTE policy and extended-nexthop-color and no-install within bgp is enabled, the rpd crash might be observed.
PR Number Synopsis Category: Express BT PFE L3 Features
1530710 "show pfe statistics error" should print counters for meaningful errors
Product-Group=evo
"show pfe statistics error", on Junos Evolved platform, shows only "Error Count: <>" for all errors for all PFEs.
PR Number Synopsis Category: EVO Class of Services
1524259 While configuring WRED profile to a scheduler, Please use either of a) any/any b) not-any/not-any combination of protocol and Loss priority.
Product-Group=evo
While configuring WRED profile to a scheduler, Please use either of a) any/any b) not-any/not-any combination of protocol and Loss priority.
1544531 EVO COS: The COSd is not coming up online hence classifier/rewrite/scheduler functionalities are not working, after the Ingress FPC4 is restarted with 125% over-subs traffic
Product-Group=evo
Junos Evolved COSd process is not coming up online hence classifier/rewrite/scheduler functionalities are not working, after the Ingress FPC4 is restarted with 125% over-subs traffic
1548014 After commit a configuration, an EVO object may depends on other objects that have not exist yet
Product-Group=evo
When configuring Class of Service on a Junos Evolved system, the COSD process may restart unexpectedly.
PR Number Synopsis Category: Firewall related development
1552641 Firewall: Use of filter configured without address-family as nested filter causes config commit to fail
Product-Group=evo
Firewall: Use of filter configured without address-family as nested filter causes config commit to fail
PR Number Synopsis Category: Issues related to EVO interface statistics.
1505596 Junos EVO - Aggregate Ethernet interfaces do not display member links' statistic
Product-Group=evo
On a Junos Evolved platform, the output of Aggregate Ethernet (AE) interface statistic does not include its member links' statistics.
PR Number Synopsis Category: management ethernet related issues - mgmt-ethd daemon
1553791 When Filter applied on RE management and deactivated, Filter behavior is unchanged after deactivation
Product-Group=evo
When Filter applied on RE management and deactivated, Filter behavior is unchanged after deactivation
PR Number Synopsis Category: software upgrade infra issues
1556641 The software rollback might not work correctly on EVO platforms
Product-Group=evo
On all EVO platforms, the software rollback might not work correctly when "request system software sync all" is run.
1557020 EVO: re1 does not come up with nextboot image after software upgrade cleanup force deep and software upgrade add operation
Product-Group=evo
"request system storage cleanup deep-force" cli command delete images installed on a router including next incoming image-related information. Hence, the router does not boot up with the next incoming image.
PR Number Synopsis Category: System Management daemon and related issues
1552045 request system reboot is taking longer in new release
Product-Group=evo
When you issue the "request system reboot" command, the backup routing engine (backup RE) takes about 1 minute longer to clean up the system's state before it reboots.
PR Number Synopsis Category: EVO Netstack Socket Intercept and NetIO libraries
1553897 Launching the CLI produces a syslog notice
Product-Group=evo
When the CLI is launched, the system generates a syslog message at the notice level stating "cli[]: 32-bit application cli is not compatible with SI". This message does not indicate a functional problem and can be ignored.
PR Number Synopsis Category: SNMP, mib2d issues
1534286 SNMP MIB ifInErrors [OID 1.3.6.1.2.1.2.2.1.14] reports wrong values in routers running affected JUNOS-EVOLVED release.
Product-Group=evo
SNMP MIB ifInErrors [OID 1.3.6.1.2.1.2.2.1.14] reports wrong values in routers running affected JUNOS-EVOLVED release.
PR Number Synopsis Category: Express PFE CoS Features
1473844 Rate-limiting might not work for JFlow sampled traffic on PTX10008
Product-Group=evo
The JFlow sampled traffic might not get rate limited in host-pipe and cause drop in throughput of interfaces on PTX10008 routers. This issue is seen due to the missing code for rate-limiters specifically on PTX10008.
1528368 PTX10008: Output filters using FLT with BT causes data/host path corruption when high traffic is flowing.
Product-Group=evo
PTX10008 running Junos Evolved - The output filters using FLT with BT causes data/host path corruption when high traffic is flowing.
1543034 PTX10008 EVO COS: The "show interfaces voq ae2 non-zero" doesn't display the non-zero queue stats, where as the other AE bundle ae1 displays it correctly (both ae1 and ae2 has 4 x 400G member links each from the same BT chip)
Product-Group=evo
To calculate AE VOQ stats, for every queue, FPC walks local AE legs and aggregates VOQ stats. For each queue, the total number of non-zero PFEs for that queue is taken from the last member. When the AE interface had multiple members. The "last-walked" member had no drops and therefore the AE interface's statistics did not display VOQ drops.
PR Number Synopsis Category: Express pfe ddos protection feature
1529847 PTX10008 EVO FPC may reboots if ddos violations are seen during fpc restart
Product-Group=evo
On PTX10008 running Junos Evolved, if DDoS violations are seen during an FPC restart event, the FPC restart process may be interrupted and restarts again.
PR Number Synopsis Category: Interface PR for Lazurite LC
1562471 JNP10K-LC1202 - ET-3/0/2:0-3 and ET-3/0/18:0-3 keep down when set them loopback. No this issues on other 10G ports on the same LC
Product-Group=evo
For retimer ports on JNP10K-LC1202 line cards, loopback. configuration is not working when there is no optics connected to the port. This affects on 20.4R1-EVO branch.
PR Number Synopsis Category: PTX10K platform specific fabric PRs
1537409 Dependency-state details for the type net::juniper::hwd::fruHwStatus are seen after hwdfpc app restart with LSR core file profile configuration.
Product-Group=evo
The dependency-state details for the type net::juniper::hwd::fruHwStatus seen after hwdfpc app restart with lsr core profile configuration
PR Number Synopsis Category: PRs related to PICd and associated lib WAN side PI code.
1527821 show interfaces diagnostics optics command doesn't work when IFD name is not given or when wild card is used
Product-Group=evo
Problem can be detected when "show interfaces diagnostics optics" command is executed with a wild card (example et-4/0/*) or when ifd name is not given at all. Execute "show interfaces diagnostics optics" with a specific IFD name for all IFDs above pic-port 10
PR Number Synopsis Category: Virtual Router Redundancy Protocol
1548464 The startup-silent-period command might not work in Junos OS Release 20.3R1 or later.
Product-Group=evo
On all Junos platforms, with double routing engine (RE) implemented, also, 20.3R1 version is in use, the knob 'startup-silent-period' might not work when performs Graceful Routing Engine switchover (GRES) without Nonstop Active Routing (NSR) enabled on Virtual Router Redundancy protocol (VRRP) router.
 

20.3R1-S2-EVO - List of Known issues
PR Number Synopsis Category: EVO RCB software
1535880 CLI issues are observed under the show system and show chassis hierarchies.
Product-Group=evo
Some CLIs which are not supported in PTX10001-36MR, when executed may return incorrect error messages.
PR Number Synopsis Category: Express BT PFE L3 Features
1487496 Counter per AE child member for egress stats are not accurate for AE sub-interface(logical units)
Product-Group=evo
On PTX10008/PTX100016 routers, Counter per AE child member for egress stats are not accurate for AE sub-interface(logical units) and they should be ignored.
1561608 Junos EVO - Traffic loss of around 10 to 12 seconds seen on offline / online FPC
Product-Group=evo
In the JUNOS Evolved version 20.3 release, when an FPC is off-lined, there may be traffic loss for about 10 seconds.
PR Number Synopsis Category: EVO build infrastructure related issues.
1508626 Add Python 3.x for EVO - module list
Product-Group=evo
There are Python 3.x modules that are missing from the Junos Evolved library. The equivalent of these modules is already installed under Python 2.7 module library.
PR Number Synopsis Category: Firewall related development
1556982 Junos EVO - changing the interface-specific field of the referenced filter in a single commit is not supported.
Product-Group=evo
When changing an interface-specific field of a firewall filter may cause the firewall process to restart. This operation is not supported on the Junos Evolved Software when done with a single commit. You may do this in separate commits.
PR Number Synopsis Category: Issues related to EVO interface statistics.
1554370 The output of "show interface queue <>" always show "Forwarding classes: 16 supported, 4 in use" with customized configuration
Product-Group=evo
On a PTX running Junos Evolved software, the output of "show interface queue <>" always show "Forwarding classes: 16 supported, 4 in use" with customized configuration.
1557843 PTX10008 "show interface" combined with refresh knob becomes sluggish after a clear interface statistics command
Product-Group=evo
On a PTX10008 running Junos Evolved, the "show interface" command combined with refresh knob becomes sluggish after a clear interface statistics command
PR Number Synopsis Category: Issues related to evo operations - libevo infra, typeinfo ..
1540807 PTX10008 JNP10K-LC1202 : savecore.sh is failing to transfer core and journal files due to directory create errors
Product-Group=evo
PTX10008 JNP10K-LC1202 : savecore.sh is failing to transfer core and journal files due to directory create errors
PR Number Synopsis Category: System Management daemon and related issues
1559070 PTX10008 PDT: could not open user interface connection: management daemon not responding , unable to goto edit/config mode
Product-Group=evo
While the system was rebooted, if the RE1 was kept offline. Once the node came up, you will be able to login thru the console. However, telnet to mgmt interfaces was not working. Both RE0 and RE1 were reachable thru the console, however unable to log into config mode.
1562981 PTX10008 EVO : PDT: power-off FPC works, power-ON FPC is not working
Product-Group=evo
To power-on, a powered-off fpc of a PTX10008 running Junos Evolved, use the "request chassis fpc slot online" command.
PR Number Synopsis Category: System Management High availability
1557461 The 'show system switchover' is the command to use when checking if the backup is ready for switchover.
Product-Group=evo
Always use the 'show system switchover' command on the backup-re to determine if the standby is ready to take over.
PR Number Synopsis Category: Interface PRs defect & enhancement requests
1547622 When routing instance primary IFF does not have address ping packets does not have source filled.
Product-Group=evo
When routing instance primary IFF does not have address ping packets does not have source filled. This will cause ping packet reply can't be received back. Workaround is configure lo0 address.
PR Number Synopsis Category: Lacp related problems and issues.
1553196 [lacp] [lacptag] PTX10004 lacpd core is obserevd after router reboot
Product-Group=evo
The "lacpd" process may generate a core dump file while a router is shutting down in the following scenarios: a. router reboot b. router upgrade Since the router is shutting down, this won't have an impact on forwarding traffic.
1553997 LACP Force up option not working
Product-Group=evo
LACP Force up option not working
PR Number Synopsis Category: AAA, auditd issues
1557052 EVO Vs JUNOS : strict-authorization config option missing under set system tacplus-options.
Product-Group=evo
With this change, when config knob strict-authorization is configured under tacplus-options and authorization fails, user is not allowed to login.
PR Number Synopsis Category: Configd, ffp issues
1556424 If a inet filter is configured with/without 'family' statement then changing its configuration to without/with 'family' statement must not be done.
Product-Group=evo
If an inet filter is configured with/without 'family' statement then changing its configuration to without/with 'family' statement must not be done. Please Refer to AT #109.
1556426 If a inet filter is configured with/without 'family' statement then changing its configuration to without/with 'family' statement must not be done.
Product-Group=evo
If an inet filter is configured with/without a 'family' statement then changing its configuration to remove or add a "family" statement may cause the filter process (firewalld) to restart unexpectedly.
PR Number Synopsis Category: mgd, ddl, odl infra issues
1517160 NETCONF service over SSH might not work on the device that runs Junos OS if in-band management is used.
Product-Group=evo
On Juniper device running Junos OS Evolved, NETCONF Service over SSH with dedicated TCP port (It is configured with 'system services netconf ssh' and the default port is 830) might not work if in-band management is used (i.e. connection is established via network interface or loopback interface etc.).
1553489 PTX10008 EVO file copy from one RE to another prompts for password twice and copied seen twice.
Product-Group=evo
On a PTX10008 running Junos Evolved, when performing a file copy from one RE to another prompts for the password twice and copied seen twice.
PR Number Synopsis Category: Category for software tracing Infra issues
1556040 Core dump for trace-relay process is seen
Product-Group=evo
If some application spawns too many threads trace-relay daemon may dump core if it reaches the upper cap of memory usage. The trace infra will recover and there will be no impact to service. No action needed from user.
PR Number Synopsis Category: Express PFE CoS Features
1540400 PTX10008 : traffic loss seen after Graceful switchover with LSR Core MPLS_DSCP profile configuration
Product-Group=evo
PTX10008 : traffic loss seen after Graceful switchover with LSR Core MPLS_DSCP profile configuration
1545061 [cos] [scheduler]: EVO COS: Queue drops on high priority AF4 queue is consistently seen, after one sib slot is offlined with 125% over-subs traffic
Product-Group=evo
When 1 SIB is offline, then in case of Ingress oversubscription of a PFE in BT chip (eg. BT0 DP0) scenario, there are chances that High priority queue might drop some amount of traffic.
1553943 [aft] [generic_evo] ptx10004 : PTX10004 :: - seeing cmerror dp_1_viqm_intr_req_enq_err, not cleared after loading latest 20.4 EVO
Product-Group=evo
In scenario of queue congestion, interface enable/disable or in PFC mode this interrupt can come on this release.
1557136 EVO COS: Cosd is getting stuck due to High CPU utilization, when router is power cycled with cosd trace config set to debug and blocking.
Product-Group=evo
When Issue occurs : Issue will seen when bulk configuration will be used with cosd trace level set to debug and blocking. impact of Issue: Cosd gets stuck due to high CPU utilization ( As trace level set to debug and blocking, so writing traces from the zookeeper thread will be taking a look time).
PR Number Synopsis Category: Express PFE FW Features
1540625 PTX10008 : Core generated while testing AE filters
Product-Group=evo
PTX10008 : Core generated while testing AE filters
PR Number Synopsis Category: Express PFE MPLS Features
1556626 Junos Evolved platforms - LDP: Clone route: Packet are not forwarded correctly from PHP hop and dropped at egress when explicit null enabled
Product-Group=evo
This is applicable to Junos Evolved platforms. The PHP router installs "clone routes" - explicit null at egress router. This is not supported before 20.4. The clone route handling is added in Junos Evolved software version 20.4
PR Number Synopsis Category: PRs for Lazurite Platform and Interface
1538514 After config "global system name-server" config commit should fail but commit is succeeds.
Product-Group=evo
After config "global system name-server" config commit should fail but commit is succeeds.
PR Number Synopsis Category: vMX Data Plane Issues
1534568 [CORE-PR][vZT]: Inconsistent core.python2.7.mpc0 core is seen with stacktrace @ea_wi_precl,@ea_macsec_receive
Product-Group=evo
Inconsistent core.python2.7.mpc0 core is seen with stacktrace @ea_wi_precl,@ea_macsec_receive()
PR Number Synopsis Category: KRT Queue issues within RPD
1542511 PTX10008 JNP10K-LC1201 : rpd core seen @ krt_reset_krtq_op_mcnh with lsr core profile configuration
Product-Group=evo
PTX10008 JNP10K-LC1201 : rpd core seen @ krt_reset_krtq_op_mcnh with lsr core profile configuration
PR Number Synopsis Category: RPD Next-hop issues including indirect, CNH, and MCNH
1534455 Some routes might get incorrectly programmed in the forwarding table in the kernel which is no longer present in rpd.
Product-Group=evo
In a scaled routes scenario, if there is any route change operation when the system is under memory pressure, the rpd might change a route entry but the same is not conveyed to the kernel. This causes a mismatch between routes in rpd and kernel leading to traffic blackhole for the mismatched route entries that are incorrectly programmed in the kernel.
PR Number Synopsis Category: PTX10K platform specific fabric PRs
1540576 PTX10008: 'SIB 0 ZF0 internal temp' sensor normal fan speed temperature threshold is set to 0.
Product-Group=evo
PTX10008 : 'SIB 0 ZF0 internal temp' sensor Normal Fan Speed temp threshold is set to 0
PR Number Synopsis Category: PTX10K specific platform PRs
1543428 The hwdre may restart resulting in queue drops on high priority queue AF4, after back-to-back GRES with oversubs traffic
Product-Group=evo
The "hwdre" process may restart resulting in queue drops on high priority queue AF4, after back-to-back GRES with oversubscribed traffic.
1557419 PTX10008:EVO Plugged-in FPCs are automatically turning into the online state, post performing mastership switchover
Product-Group=evo
On a PTX10008 running Junos Evolved software, the inserted FPCs are automatically turning into the online state, after performing the mastership switchover
 
Modification History:
2021-01-19 - Fixing typo and removed redundent text
2021-01-15 Published 20.3R1-S2.12-EVO as the replacement for 20.3R1-S2.11-EVO
Updated with RECALL notification on 2021-01-06
First publication 2021-01-06
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