Configure AutoQoS on the Faster Interface
In this task, you will configure AutoQoS on router R2's faster
serial interface.
Complete these steps:
|
Step 1. |
Enter interface configuration mode on router R2 for the
interface that connects R2 to router R3 (for example, interface Serial 0/1 in Figure 7-8). |
|
Step 2. |
Enable AutoQoS for this interface with the auto qos voip
command.
|
Task 3: Exercise Verification
In this task, you will verify the configuration of AutoQoS on
router R2's serial interfaces.
Complete these steps:
|
Step 1. |
From router R2's privileged mode, enter the show auto qos command to view the commands entered by
AutoQoS globally, for the slower serial interface, and for the faster serial
interface.
|
|
Step 2. |
Notice that for the slower serial interface, AutoQoS
configured Multilink PPP (MLP) and enabled RTP Header Compression (cRTP) because
these are link efficiency mechanisms designed to
optimize bandwidth usage on slower-speed serial interfaces (that is, interfaces
with interface speeds less than 768
kbps).
|
Note
The purpose of this lab is to illustrate how AutoQoS
intelligently applies appropriate QoS mechanisms to interfaces, based on
interface characteristics. In order to be able to place a phone call across the
lab topology after completing this lab, you should also configure AutoQoS on
router R1's serial interface that connects back to router R2, because MLP must
be configured on both ends of a link.
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