© 2006 Cisco Systems, Inc. All rights reserved.IP6FD v2.08-1 Examining Mobility Understanding Network Mobility. - презентация

1 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Examining Mobility Understanding Network Mobility

2 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Mobile Networking Mobile networks based on Mobile IPv6: Use a mobile router instead of a mobile node Maintain a bidirectional tunnel between mobile router and home agent Modify home agent behavior Modify router behavior Do not modify binding update format

3 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Network Mobility Definitions Mobile Networking (Cont.) Correspondent Node Home Agent Home Link Access Router 1 Access Router 2 Local Fixed Node Border Router Mobile Network Mobile Router

4 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Network Mobility Operation Mobile Networking (Cont.) Correspondent Node Home Agent Access Router 2 Local Fixed Node Mobile Network Mobile Router Access Router 1 Border Router

5 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v IPv6 Mobility Across Multiple Access Networks Mobile Networking (Cont.) Corporate Network AAA Internet Servers AAA PSTN/Cellular Circuit Data PSTN/Cellular Circuit Voice Cellular Packet Data 7206-DES 5x , 3600, Mobile Router SOHO Router 806, 827, … Broadband WLAN at Home Office Internet Backbone

6 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Mobile Ad Hoc Networking A mobile ad hoc network (MANET) is a collection of mobile nodes which have organized themselves into a network. The characteristics of these nodes are: –Intermittent connectivity –Low bandwidth –Constantly changing topology Initial MANET applications: –Military –Transportation

7 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Wireless Uplink MANET Operation MANET Nodes MANET Nodes Node A Node B Node C

8 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v MANET Operation (Cont.) MANET Nodes MANET Nodes Node A Node B Node C X Wireless Uplink

9 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v Summary Network mobility (NEMO) expands upon the capabilities created by Mobile IPv6 with some additional enhancements: –Supports a mobile router concept that maintains a connection for all the nodes connected to it –Maintains a bidirectional tunnel with a home agent –May advertise multiple prefixes MANET is used by mobile wireless nodes to form adhoc networks

10 © 2006 Cisco Systems, Inc. All rights reserved.IP6FD v