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19.4R2-S3-EVO: Software Release Notification for JUNOS Software Version 19.4R2-S3-EVO

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Article ID: TSB17919 TECHNICAL_BULLETINS Last Updated: 25 Nov 2020Version: 2.0
Alert Type:
SRN - Software Release Notification
Product Affected:
PTX and QFX series running Junos Evolved
Alert Description:
Junos Software Service Release version 19.4R2-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
Solution:

Junos Software service Release version 19.4R2-S3-EVO is now available.

19.4R2-S3-EVO - List of Fixed issues

PR Number Synopsis Category: PTX10003 Platform related issues
1551374 Logs not being written in /var/log/messages on certain PTX platforms running Junos Evolved
Product-Group=evo
Logs not being written in /var/log/messages on certain PTX platforms running Junos Evolved
PR Number Synopsis Category: EVO Netstack Juniper Tunnel Driver Module
1544978 The IPv6 BGP session might flap continuously due to transport error
Product-Group=evo
The IPv6 BGP session might flap continuously when IPv6 RA (router-advertisement) packets are received with a link-mtu option. The IPv4 BGP session on the same link is stable.
PR Number Synopsis Category: EVO category to hold IPv6 Neighbor Discovery Protocol and re
1494128 Junos OS Evolved: Receipt of a specifically malformed NDP packet could lead to Denial of Service (CVE-2020-1681)
Product-Group=evo
Receipt of a specifically malformed NDP packet sent from the local area network (LAN) to a device running Juniper Networks Junos OS Evolved can cause the ndp process to crash, resulting in a Denial of Service (DoS). Refer to https://kb.juniper.net/JSA11078 for more information.
PR Number Synopsis Category: mgd, ddl, odl infra issues
1522339 Compressed /var/log/ creation through file archive compress might fail on certain PTX platforms running Junos Evolved.
Product-Group=evo
Compressed /var/log/ creation via "file archive compress" might fail on certain PTX platforms running Junos Evolved.
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: KRT Queue issues within RPD
1493963 The rpd process generates a core dumps
Product-Group=evo
On EVO platforms running BGP with knob 'route-record' or sampling, the rpd might crash if BGP paths exceed around 5600K.
1505769 Traffic flow might be blocked if MTU configured under IFD is greater than MTU configured under IFF
Product-Group=evo
On EVO platforms, if MTU configured under physical interface (IFD) is greater than MTU configured under same interface with family inet or family inet6 (IFF), aftmand might have catastrophic event. In the end, no traffic could be forwarded by aftmand. Please make sure IFD MTU need to be configured with smaller value than IFF MTU.
 

19.4R2-S3-EVO - List of Known issues

PR Number Synopsis Category: EVO Netstack icmpd
1362365 IPV6 Ping is not support "do-not-fragment" in current release.
Product-Group=evo
IPv6 ping does not support do-not-fragment in the Junos OS Evolved 20.1R1 Release.
PR Number Synopsis Category: Issues related to EVO interface statistics.
1522703 EVO Ifstatsd core observed on longetivity testbed with multiple triggers at net::juniper::evlruntime::evoobject_publish_validate
Product-Group=evo
With an EVO system subjected to continuous instabilities, the ifstatsd process may restart.
PR Number Synopsis Category: EVO RPD agent PRs
1527399 Tracking PR for rpd-agent memory.
Product-Group=evo
rpd-agent daemon has a minor memory leak when it receives certain states.
PR Number Synopsis Category: RPD Next-hop issues including indirect, CNH, and MCNH
1484589 Implementation of Resolver loop detection for List NH component members
Product-Group=evo
BGP started creating route pointing to List NH having INDIRECT members inside after comcast N+1 RLI. But resolver treats LIST NH as a leaf node and does not do loop detection inside List NH members (Day 1 behavior). This causes wedges in Packet Forwarding Engine as loop detection does not happen.
PR Number Synopsis Category: PRs related to PICd and associated lib WAN side PI code.
1475753 The picd top-level periodic is hogging CPU which might cause link detection delay
Product-Group=evo
On ULC platforms, the link detection can be delayed if picd periodic hogs CPU. This can occasionally delay time-critical activities like FRR and cause traffic null route for tens of milliseconds.
 
Implementation:
First publication date 2020-11-25
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