Possible duplicate IP addresses issued by ACS1113

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Sep 9th, 2008
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has anyone seen an acs server issuing duplicate ip addresses

is there any way to list the IP allocation to check if duplicates have been issued?

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smahbub Wed, 09/17/2008 - 08:30
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Address assignment from IP pools is based on Accounting Start and Stop records. A duplicate IP address might be assigned to a user if an Accounting Stop packet is received out of order following a new access request by the same user.

If ACS receives a late Stop packet, it might erroneously mark an IP address as free, even though it has just been assigned. That might lead to a duplicate address assignment during the next connection.Such situations can happen in DSL environments where a router starts new PPP connections in less than 1 second after a previous disconnection


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