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Cisco Router Series 3900

Posted on 2014-04-30
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Last Modified: 2014-05-13
Guys I am getting all the time this message in my router config. Anyone knows what it is ?

742: %CRYPTO-5-IKMP_AG_MODE_DISABLED: Unable to initiate or res
pond to Aggressive Mode while disabled



Rgrds

Andreas
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Question by:AndreasChristoforides
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Expert Comment

by:mozekin
ID: 40031859
Andreas,

Normally, a cisco router will check for aggressive-mode during boot or responding to an IKE request which is what it appears to be with the information you have provided. How often does this message appear? every few minutes or only at initialisation stage? it could just mean that there are some peers trying to connect via IPSEC to your router.
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Author Comment

by:AndreasChristoforides
ID: 40031878
Hey Mozekin,


It appears every 1 minute , will i have issues with my log after ? How can i view these peers ?
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Expert Comment

by:mozekin
ID: 40033507
Andreas,

Have a read of the below support page, depending on your environment setup you may be able to get away with adding the host as a peer to stop the informational logs.

Do you know which peers are trying to communicate over IPSec to your router?

http://www.cisco.com/c/en/us/td/docs/ios/12_2/security/command/reference/srfipsec.html
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Accepted Solution

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AndreasChristoforides earned 0 total points
ID: 40049873
Hello Mozekin , sorry for my late reply , i was away in another country !! Thank you so much for your help my friend !!! I have resolved the issue and the link you gave me also helped a lot ! Thank you !
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Author Closing Comment

by:AndreasChristoforides
ID: 40061322
Fixed my issue and learned a lot about that message i was getting in the router !!!
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