Junos MX router ISSU walkthrough and validation

Published: 23 March 2019
on channel: 5 Minute Junos
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In-Service Software Upgrade (ISSU) on a Juniper MX240 router w/ dual RE's.

Lab design in first 1m of video. Covered topics:
Software download
Pre-checks
Install
In-Service stability
Post-checks

Tested using a pair of MX80's and an IXIA server.

Upgrade begins at ~22:30
Upgrade complets at ~24:18

Upgrade process accelerated. Total real upgrade time is ~22m.

Max packet loss = ~0.2%
Mean packet loss = ~0.087%
Test session maintained w/ no BGP or interface flaps.


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