LOCATION INDEPENDENT NAMING INTRODUCTION Location independent naming as

LOCATION INDEPENDENT NAMING

INTRODUCTION Location independent naming as a mechanism to support nomadic computing on the internet.

• allows the machine to keep the same name as it moves around the internet by rebinding its name to its local address when it moves. • communicate without the performance penalties, security issues or need for infrastructure support of mobile IP. • proposed functionality of DNS(Domain Name System) and DHCP(Dynamic Host Configuration Protocol).

LIN Protocol • Involves three steps: --Setup --Use -- Tear Down • Travelling host send message to its home DNS server using the DHCP. • Host can renew TTL on its mapping using steps.

• two ways of destroying name to address binding: -- to wait for the TTL to elapse -- to inform the DHCP and DNS servers to revoke the mapping while moving.

TECHNICAL DETAILS • How Does DHCP know to trust the travelling host? • Stale DNS cache entries • The effect of short TTLs on DNS load • How can the travelling host securely update its home DNS entry? • What happens if the travelling host moves to a new location before its lease expires? • What changes to DNS are needed for LIN?

• When cam the local DHCP server reuse the travelling host’s IP address? . What changes to the travelling host are needed for LIN? . What changes to the local DHCP server are needed for LIN? . LIN uses existing trust relationships.

EXTENSIONS TO LIN • Adding transparent mobility. • two approaches. • Reducing minimum time to move between networks. • host to leave an agent its old location that will forward packets to the client at its new location. • Alternatives to modifying DNS and DHCP. • modifying DNS by setting TTL’s for ARR.

RELATED WORK • Comparison to mobile IP. • Supporting mobility with DNS and DHCP. • Immutable association between a LIFN (Location Independent File. Name) and a specific byte stream.

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