QoS Overview
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B
ANDWIDTH
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HARING
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A typical requirement of a service edge router is to support VPN tunnels to
corporate office. Over these VPN tunnel, bandwidth sharing and other QoS
functionalities (marking/classification/police, etc.) are expected.
The example of link bandwidth sharing requirements over VPN tunnels is depicted
in the figure below. This type of link sharing is achieved using regular hierarchical
link sharing algorithm.
Figure 53: Link Bandwidth sharing requirements over VPN tunnels
In order to provide classification, a pre-classify command is introduced. For the
purpose of providing service-policy in the tunnel, each of the tunnel (IPSec or
GRE) must support interface abstraction. QoS policy is applied on this interface
similar to service-policy on the physical interface. Also, in order to mange
congestion on the physical interface, a policy has to be created on the physical
interface, and this policy must include tunnel policy as child policy.
Содержание OmniAccess 700
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