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CheckPointerXL
Advisor
Advisor

IKE IDs is smaller than Encryption Domain definition

Hi all,

very small setup:

S2S VPN Domain based, my enc domain has only 10.10.0.0/16,

Anyway, what i found by vpn tu is that my ike id is 10.10.0.0/17.

Trying to connect to a host inside 10.10.128.0/17, I get a new IKE id with a /32 on my side, this is related to the host IP of course.

I checked all my communities, but it seems that this behavior is not linked to sk170857.

So, why this happens?

Maybe some NAT rule inside 10.10.128.0/17 is breaking the subnet because of the natted IP which is not in peer's enc domain?

 

thanks a lot

 
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5 Replies
the_rock
MVP Diamond
MVP Diamond

Go to guidbedit and search for supernet, ike_use...cant remember exact values now, but may have to do with those.

Best,
Andy
"Have a great day and if its not, change it"
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CheckPointerXL
Advisor
Advisor

do you mean ike_use_largest_possible_subnets ?

It seems that i'm facing the opposite problem...

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the_rock
MVP Diamond
MVP Diamond

Yes, that, but also any supernet setting, turn it to false.

Best,
Andy
"Have a great day and if its not, change it"
Vladimir
Champion
Champion

Check the VPN community settings to see if it is configured "per pair of hosts".

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CheckPointerXL
Advisor
Advisor

Hello Vladimir,

Thank you for your feedback.

Of course is configured "per subnet pair", domain based setup.

Next hours i will check for previous mentioned dnguiedt value

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