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21.1R2-S2: Software Release Notification for JUNOS Software Version 21.1R2-S2

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Article ID: TSB18215 TECHNICAL_BULLETINS Last Updated: 30 Nov 2021Version: 1.0
Alert Type:
SRN - Software Release Notification
Product Affected:
ACX, EX, MX, PTX, QFX, NFX, SRX, VRR, vMX, vSRX
Alert Description:
Junos Software Service Release version 21.1R2-S2 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
Risk Risk Description
Low/Notification - No defined time impact to take action Software Release Notification
Impact Impact Description
Low/Notification - Monitor the situation but no action needed Software Release Notification

Solution:

Junos Software service Release version 21.1R2-S2 is now available.

21.1R2-S2 - List of Fixed issues

PR Number Synopsis Category: Express pfe Mclag
1610173 Continuous L3 traffic drop might be observed with MC-LAG configuration on QFX10K platforms
Product-Group=junos
On QFX10K platforms with MC-LAG configured, When trying to add or remove the MC-LAG configuration continuous L3 traffic drop might be observed which might not be recovered.
PR Number Synopsis Category: TCP/UDP transport layer
1626400 Configuration commit may fail while configuring the knob 'authentication-key-chains' under groups
Product-Group=junos
On all Junos and Evo platforms, if 'no-persist-groups-inheritance' is not configured, configuration commit issues may be seen while configuring the knob 'authentication-key-chains' under groups. Expanded view of the database is not fetched when configured via groups security and hence commit check error may be seen. The TCP-keychain functionality may not work as expected if this issue occurs.
PR Number Synopsis Category: Junos Automation, Commit/Op/Event and SLAX
1604622 File download using "request system download" might fail
Product-Group=junos
On a EX4400 device, any files scheduled for download using the cli command "request system download" might fail due to error. The files can be downloaded using normal ftp/scp commands on the device.
PR Number Synopsis Category: Configuration management, ffp, load action
1601159 The commitd core file may be observed after committing some configuration change
Product-Group=junos
On all Junos platforms, if juniper.db size is more than 700 MB and commitd is invoked, it causes the device to generate a core file (or dump file).
 

21.1R2-S2 - List of Known issues

PR Number Synopsis Category: EVPN control plane issues
1600310 [evpn_vxlan] [evpn_instance] : mx960 ::JUNOS:JDI_FT_REGRESSION::VMX:Bridge mac-table learning entries are not as expected for EVPN-VXLAN-1 routing instance
Product-Group=junos
In a scenario with EVPN-VXLAN in the Datacenter and EVPN-MPLS is in the WAN and the stitching is done with an LT interface, then the bridge mac-table learning entries are not as expected for EVPN-VXLAN routing instance. This could occur after 'restart interface-control' is issued on gateways.
 
Modification History:
First publication 2021-11-30
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