Telematics Chapter 6: Network Layer - Freie Universität Berlin
Telematics Chapter 6: Network Layer - Freie Universität Berlin
Telematics Chapter 6: Network Layer - Freie Universität Berlin
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IPv6 Addresses: Address Types<br />
● Multicast Addresses:<br />
● An IPv6 multicast address is an identifier for a group of interfaces<br />
● An interface may belong to any number of multicast groups.<br />
● Format:<br />
8 4 4 112 bits<br />
11111111 flgs scop group ID Scope values (4 bit)<br />
0 reserved<br />
1 Interface-Local scope<br />
● 11111111: identification of multicast addresses<br />
● flgs: set of 4 flags: 0RPT<br />
● T=0: permanently assigned multicast address<br />
● T=1: non-permanently assigned multicast address<br />
(dynamically, on-demand)<br />
● P: multicast address assignment based on network<br />
prefix (RFC 3306)<br />
● R: embedding of the rendevous point (RFC 3956)<br />
● scop: limit the scope of the multicast group<br />
Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ <strong>Telematics</strong> ▪ <strong>Chapter</strong> 6: <strong>Network</strong> <strong>Layer</strong><br />
2 Link-Local scope<br />
3 reserved<br />
4 Admin-Local scope<br />
5 Site-Local scope<br />
6 (unassigned)<br />
7 (unassigned)<br />
8 Organization-Local scope<br />
9 (unassigned)<br />
A (unassigned)<br />
B (unassigned)<br />
C (unassigned)<br />
D (unassigned)<br />
E Global scope<br />
F reserved<br />
6.79
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