Alert Type

SRN - Software Release Notification

Product Affected

PTX series running Junos Evolved

Alert Description

JUNOS Evolved Software version 19.4R2-S4-EVO has been replaced by a new software version (a re-spin of the original 19.4R2-S4-EVO software)

  • The original 19.4R2-S4-EVO can be identified by the image name " junos-evo-install-ptx-fixed-x86-64-19.4R2-S 4.3 -EVO.iso "
  • The replacement image name is - " junos-evo-install-ptx-fixed-x86-64-19.4R2-S 4.5 -EVO.iso "
Impact : LOW - the new re-spin version of the Junos Evolved 19.4R2-S4-EVO contains additional software fixes which did not include in the original version.
Recommendation : If you download and deploy the original 19.4R2-S4.3-EVO, we encourage you to download the "new" version especially if you are using the Sflow feature.

Note: The suggested software release for the PTX series running Junos Evolved software is 20.4R2-EVO (Please see KB21476 [juniper.net] for the latest information.)

To 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 Evolved 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JUNOS Evolved Software version 19.4R2-S4-EVO has been replaced by a new software version (a re-spin of the original 19.4R2-S4-EVO software)

  • The original 19.4R2-S4-EVO can be identified by the image name "junos-evo-install-media-usb-ptx-fixed-x86-64-19.4R2-S4.3-EVO.img|iso"
  • The replacement image name is - "junos-evo-install-media-usb-ptx-fixed-x86-64-19.4R2-S4.5-EVO.img|iso"

19.4R2-S4-EVO - List of Fixed issues in the Original 19.4R2-S4.3-EVO Release

PR Number Synopsis Category: EVO RCB software
1489861 Junos Evolved - disk management policy changed for /var and /tmp partition
Product-Group=evo 		Junos Evolved - disk management policy changed for /var and /tmp partition. The disk management process issues an alarm when the partition reaches 80% capacity. It starts the clean-up process at 85% capacity.

Additional Fixes in the new 19.4R2-S4.5-EVO software package are:
PR Number Synopsis Category: Interface PRs defect & enhancement requests
1591340 Some Interface Units description is missing from the output of 'show interfaces description' on certain PTX platforms running Junos Evolved
Product-Group=evo 		Some Interface Units description is missing from the output of 'show interfaces description' on certain PTX platforms running Junos Evolved
PR Number Synopsis Category: EVO Services Sflow PRs for defect & enhancement requests
1501217 Junos Evolved with "SFlow" feature may experience aftmand process restart unexpectedly
Product-Group=evo 		This issue is applicable to the "SFlow" feature on the Junos Evolved software. When an interface status is changed, the state of "sflow" information is incorrect causing the "aftmand" process to restart unexpectedly.

 

Modification History

Updated 2021-05-17 - recalled and replace the original 19.4R2-S2-EVO with a new re-spin
First publication 2021-04-23