1.Why GRE tunnels in uplink?
2.How admission control is done in ASN Gateway
3."If mobile station move between the ASN gateways, in this scenario
1) Whether the IP address of the mobile changes?
2) All the base stations are in same network or in different network?
3) How the exchange information between ASN gateways through R4 interface?
4.Packet flow between the Mobile stations to Home agent?
5. how to test the ASN gateway? ( in my LAB i have only IXIA traffic generator , is it possible to test ASN or if it not how i have to proceed?