About SA Lifetime Negotiation
You can override the global lifetime values (size and time) by configuring an SA-specific lifetime value.
To specify SA lifetime negotiation values, you can optionally configure the lifetime value for a specified crypto map. If you do, this value overrides the globally set values. If you do not specify the crypto map specific lifetime, the global value (or global default) is used.
See the "Global Lifetime Values" topic for more information on global lifetime values.
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