I am using my ASA 5510 as a DHCP server for a classroom environment. When the 25 computers are powered on, about 5 of them fail to obtain IP addresses, and when you manually renew the IP you get dhcp server not responding. If I Log into the ASA Firewall and make a change to the DHCP Scope (expand or contract the scope range) then all the computers will get IP addresses. Lease expiration is set to 3600 sec. and I see the DHCP leases listed in the ASA. Any ideas? All client computers are Vista SP2.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...