LOCATION INDEPENDENT NAMING. INTRODUCTION Location independent naming as a mechanism to support nomadic computing on the internet. - презентация

1 LOCATION INDEPENDENT NAMING

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

3 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).

4 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.

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7 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.

8 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?

9 When cam the local DHCP server reuse the travelling hosts 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.

10 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 TTLs for ARR.

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

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13 THANK YOU