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

Last Modified

Oct 09, 2018

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)

Symptom:
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.

Conditions:
Only for cat4500es8 & cat4500e images.

Related Community Discussions

ISSU-3-FSM_MISMATCH_MTU???
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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