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Address Persistent

When a host initiates several sessions that match a policy that requires network address translation and is assigned an address from a source pool that has PAT enabled, the device assigns a different source IP address for each session. Such random address assignment can be problematic for services that create multiple sessions that require the same source IP address for each session. For example, it is important to have the same IP address for multiple sessions when using the AOL Instant Message (AIM) client.

To ensure that the router assigns the same IP address from a source pool to a host for multiple concurrent sessions, you can enable a persistent IP address per router.

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