IP mobility.

[kamate]

Chào các bạn,

Tôi đang học Networking và có 2 câu hỏi sau muốn các bạn giúp đỡ (câu 2 liên quan đến IP mobility):

Problem1:



Each router has next hop information, which is typically refereed to as a “Forwarding Table”, or a “Forwarding Information Base”. The router forwards the packets based on the forwarding rules. Briefly describe the principle of Forwarding Rule and then by using that solve the following example.

Suppose a router has built up the routing table shown below. The router can deliver directly over interfaces 0 and 1, or it can forward packets to routers R2 and R3. Describe what the router does with a packet addressed to each of the following destination.

Subnet Address Subnet Mask Next Hop
128.96.39.0 255.255.255.128 Interface 0
128.96.39.128 255.255.255.128 Interface 1
128.96.40.0 255.255.255.128 R2
192.4.153.0 255.255.255.128 R3

Destination Addresses:

(a) 128.96.39.32

(b) 128.96.40.16

(c) 128.96.40.163

(d) 192.4.153.16


Problem 2 :

Assume that the subnets in the above example are going to support mobility of IP hosts. Moreover, that the mobility will be supported using the latest, co-located foreign agents. Explain what additional hardware and software is needed, and where in the intranet these resource(s) are to be placed. Explain your design choice with the aid of a diagram and with less than 300 words of text.

Hint: You may use this as a reference: IP Mobility Support by C. Perkins IBM or your favourite one.



Xin cám ơn.