Configuring Qppb; Overview; Qppb Fundamentals - HP MSR4080 Configuration Manual

Configuring QPPB

T he term "router" in this document refers to bo
Over view
T he QoS Policy Propagation Through the
c las ify IP packets based on BGP community lists, prefix lis s
T he QPPB feature is implemented as foll
The BGP route sender preclassifies routes befor
•
The BGP route receiver sets the IP precedence and local QoS ID for the routes and takes
•
appropriate QoS actions on the packets that match the r
QPPB minimizes the QoS policy configuration and mana
the network topology changes. It is suitable for a large-scaled complex network that clas
based on source or destination IP addresses for QoS.
QPPB applies to IBGP and EBGP. You can use i
autonomous systems.

QPPB fundamentals

QPPB works on the BGP receiver. It depends on the BGP route sender to preclassify routes.
The BGP route sender uses a routing policy to set route attributes for BGP routes before advertising them.
The BGP receiver performs the following tasks:
Uses a routing policy to match routes based on these
•
Sets IP precedence and local QoS ID for the matching
•
The BGP receiver performs the following tasks:
1. Compares the routes
community attributes.
2. Applies the IP precedence and local QoS ID
3. Adds the BGP routes and their associated IP precedence and local QoS ID to the routing table.
4. Applies the IP precedence and local QoS ID to the packets sour
address in the route.
5. Takes QoS actions on the packets acco
th routers and Layer 3 switches.
Border Gateway Protocol (QPPB) feature enables you to
ows:
with the incoming route policy based on their BGP AS path, prefix, or
rding to the QoS priority settings.
75
ts, and BGP AS paths.
e advertising them.
outes.
gement efforts on the BGP route receiver when
t within an autonomous system or across multiple
route attributes.
routes.
to the matching routes.
ced from or destined to the IP
sifies packets