CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.
-
Upload
bella-meiggs -
Category
Documents
-
view
215 -
download
1
Transcript of CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.
![Page 1: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/1.jpg)
CCRI J. Bernardini 1
Wireless Mobile IP
CCRI ENGR 1500
![Page 2: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/2.jpg)
CCRI J. Bernardini 2
Mobile IP Components
MN – Mobile Node (VMD)
FA – Foreign Agent (MAP)
HA – Home Agent (MAP)
AAP – Authoritative Access Point
MAP – Mobile IP Access Point (MN)
VMD – Visiting Mobile Device (MN)
COA – Care-of-Address
HAN – Home Agent Network
FAN – Foreign Agent Network
CN – Correspondent Node
![Page 3: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/3.jpg)
CCRI J. Bernardini 3
Subnets and Mobile IP
• Subnets provide many advantages:– make network management easier– Subnets reduce broadcasts– Subnets provide security– Subnets use subnet masks (255.255.255.0)
• WLAN subnets creates problems for roaming devices• Example:
– 192.146.118.20 /24 can seamlessly roam within 192.146.118.x /24– Note /24 is a 255.255.255.0 subnet mask– 192.146.118.20 /24 can not seamlessly roam within
202.165.200.x /24 without changing the IP address
• Mobile IP offers a solution– 192.146.118.20 can roam as a “guest” on the 202.165.200.x
network
![Page 4: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/4.jpg)
CCRI J. Bernardini 4
Mobile IP Devices
• Visiting Device– Some APs support Mobile IP and Visiting devices
• Mobile IP Access Point– Performs all Mobile IP services
• Home Agent– Visiting devices home router– Tunnels packets from “visited” network to “visiting” device
• Authoritative Access Point (AAP)– Uses a subnet map to track all home “visiting” devices
• Foreign Agent– A router the is the attachment point for “visiting” devices– Tunnels packets to the Home Agent for the “visiting” device
![Page 5: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/5.jpg)
CCRI J. Bernardini 5
Mobile IP Process - Discovery
1- Mobile Node (MN) gets address from Home Agent (HA)
2- MN moves to Foreign Agent (FA ) network
3- MN discovers FA or solicits for an agent.
4- MN gets Care-of-Address (COA) from FA
1
2
34
Mobile IP
3-Step Process
1-Discovery
2-Registration
3-Tunneling
MN – Mobile Node
FA – Foreign Agent
HA – Home Agent
![Page 6: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/6.jpg)
CCRI J. Bernardini 6
Mobile IP Process - Registration
5- MN send registration request to FA
6- FA checks request, adds MN to pending list
7- FA relays request to HA
8- HA checks request and creates a mobile binding
9- HA sends registration reply to FA
5
Mobile IP
3-Step Process
1-Discovery
2-Registration
3-Tunneling
67
89
10
10- FA checks reply and adds MN to visitor list and relays reply to MN
11-FA creates a routing entry and tunnel to HA
12- MN check reply and creates a tunnel to the HA
Through the FA
11
12
MN – Mobile Node
FA – Foreign Agent
HA – Home Agent
CN – Correspondent Node
![Page 7: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/7.jpg)
CCRI J. Bernardini 7
Mobile IP- Tunneling and Packet Forwarding
MN – Mobile Node
FA – Foreign Agent
HA – Home Agent
CN – Correspondent Node
COA- Care-of-Address
13
13- Correspondent Node (CN) sends packet to MN and is routed to HA
14- HA intercepts packets and tunnels to the FA using the COA
15- FA relays the packets to the MN
1415
![Page 8: CCRI J. Bernardini 1 Wireless Mobile IP CCRI ENGR 1500.](https://reader035.fdocuments.us/reader035/viewer/2022062620/5519d822550346d67b8b4570/html5/thumbnails/8.jpg)
CCRI J. Bernardini 8
Mobile Node Movement