Telematics Chapter 6: Network Layer - Freie Universität Berlin

Packet Buffer for Router B
● Link state message from A arrives directly, therefore Age=60, Seq.No.=21
● Message is sent to C and F, and confirmed for A
● Message of F must be forwarded to A and C,
and be confirmed for F
● Message of E came
twice (over EAB and EFB)
therefore only
forwarding to C,
confirmation for
A and F
A
F
E
C
D
Transmission flags Confirmation flags
Source Seq.No. Age A C F A C F
Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 6: Network Layer
21
21
21
20
21
60
60
59
60
59
0
1
0
1
1
1
1
1
0
0
1
0
0
1
0
1
0
1
0
0
0
0
0
1
1
0
1
1
0
1
A
4
5
B 2 C
1
E 8 F
Data
6
6.196
3
D
7