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Cisco Bug: CSCur01407 - ISSU loadversion trigger ISSU-3-FSM_MISMATCH_MTU traceback

Last Modified

Dec 26, 2019

Products (1)

  • Cisco IOS

Known Affected Releases

12.3(15) 15.2(2.2.23)E 15.2(2.5.3)E3 15.2(2.5.5)E3 15.2(3.0.62)MG 15.2(3.2.81)E 15.2(4.0.16)E4 15.2(6.1.52)E

Description (partial)

While doing cat4k vss issu loadversion between 15.2(2)E/15.2(2)E1/15.2(2)E2  image and 15.2(3)E image, ISSU-3-FSM_MISMATCH_MTU traceback is seen.

Only for cat4500es8 & cat4500e images.

Related Community Discussions

Hi,   Last night we upgrade our cat4506 sup8, and during upgrade process of the active sup, after the standby sup have been upgraded, we noticed the following error on the console -> %ISSU-3-FSM_MISMATCH_MTU: STANDBY:ISSU nego failed for client ISSU auth mgr client(316) entity_id 1 session 48 due to mismatch of mtu size 13 & 16 The sup upgraded correctly, it briefly displayed “runversion”,”acceptversion”,”commitversion” on the console during after each reload. Does anybody know what this means, and ...
Latest activity: Oct 25, 2016
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