Danh sách khoá học Đăng nhập

Thông tin

Tác giả Bonaventure Olivier
Hạn chót Không có hạn chót
Giới hạn nộp bài Không có giới hạn

Đăng nhập

Đăng nhập

Token bucket

A token bucket allows to precisely define the traffic contract of a packet flow. It is defined with two parameters :
  • a rate R expressed in bits/sec
  • a burst size B expressed in bits
Câu hỏi 1: Packets accepted by a token bucket

Consider a token bucket attached to a 1 Mbps link and configured ith R=100 Kbps and B=1000 bits. The token bucket receives the following packets

Packet at time Length(bits)
a at 0.000 s 1000
b at 0.005 s 1000
c at 0.010 s 1000
d at 0.015 s 1000
e at 0.020 s 1000
f at 0.025 s 1000
g at 0.030 s 1000
h at 0.035 s 1000

Which of these packets are accepted by the above token bucket ?

Câu hỏi 2: Packets accepted by a token bucket

Consider a token bucket attached to a 1 Mbps link and configured with R=100 Kbps and B=3000 bits. The token bucket receives the following packets

Packet at time Length(bits)
a at 0.001 s 1000
b at 0.002 s 1000
c at 0.003 s 1000
d at 0.004 s 1000
e at 0.011 s 1000
f at 0.012 s 1000
g at 0.013 s 1000
h at 0.014 s 1000

Which of these packets are accepted by the above token bucket ?

Câu hỏi 3: Packets accepted by a token bucket

Consider a token bucket attached to a 1 Mbps link and configured with R=100 Kbps and B=3000 bits. The token bucket receives the following packets

Packet at time Length(bits)
a at 0.000 s 2000
b at 0.002 s 1000
c at 0.003 s 1000
d at 0.009 s 1000
e at 0.010 s 2000
f at 0.012 s 1000
g at 0.019 s 1000
h at 0.020 s 1000

Which of these packets are accepted by the above token bucket ?