Lab 4. QoS - Traffic Shaping

Let’s do practice

R1#

interface Loopback0

 ip address 1.1.1.1 255.255.255.255

 ip ospf 1 area 0

!

interface FastEthernet0/0

 ip address 12.12.12.1 255.255.255.0

 ip ospf 1 area 0

 no shut

R2#

interface Loopback0

 ip address 2.2.2.2 255.255.255.255

 ip ospf 1 area 0

!

interface FastEthernet0/0

 ip address 12.12.12.2 255.255.255.0

 ip ospf 1 area 0

 no shut

Let’s do traffic shaping on Fa0/0 in R1

R1(config)#int f0/0

R1(config-if)#traffic-shape rate ?

  <8000-100000000>  Target Bit Rate (bits per second)

R1(config-if)#traffic-shape rate 128000 ?

  <0-100000000>  bits per interval, sustained

  <cr>

R1(config-if)#traffic-shape rate 128000 8000 ?

  <0-100000000>  bits per interval, excess in first interval

  <cr>

R1(config-if)#traffic-shape rate 128000 8000 0 ?

  <0-4096>  Set buffer limit

  <cr>

R1(config-if)#traffic-shape rate 128000 8000 0 1000

Verify the traffic-shaping

R1(config-if)#do ping 2.2.2.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 24/39/56 ms

R1#show traffic-shape f0/0

Interface   Fa0/0

       Access Target    Byte   Sustain   Excess    Interval  Increment Adapt

VC     List   Rate      Limit  bits/int  bits/int  (ms)      (bytes)   Active

-             128000    1000   8000      0         62        1000      -

R1#show traffic-shape stat

                  Acc. Queue Packets   Bytes       Packets   Bytes     Shaping

I/F               List Depth                 Delayed   Delayed   Active

Fa0/0                   0           27        2605       0         0         no