R3303-HP HSR6800 Routers ACL and QoS Configuration Guide

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Configuration example for implementing intelligent
load sharing through interface-level hierarchical
CAR
Network requirements
A company has agencies in site X and site Y, respectively. The agency in site X has department A and the
agency in site Y has department B. The two departments are connected through two WAN links leased
from a service provider, which back up each other. The primary link provides 100 Mbps of bandwidth
and is configured with gateway address 10.0.0.2. The secondary link provides 40 Mbps of bandwidth
and is configured with gateway address 11.0.0.2. Department A and department B need to transmit two
types of traffic: data traffic, and video conferencing traffic with UDP port number 3000. Transmit the
video traffic over only the secondary link. When all or partial bandwidth of the secondary link is idle,
data traffic can also be transmitted over the secondary link. In this way, both the primary link and
secondary link can be 100% utilized.
Configure interface-level hierarchical CAR to:
• Limit the video traffic rate to 30 Mbps, drop the video traffic exceeding 30 Mbps, and transmit the
video traffic only over the secondary link.
• Transmit data traffic over the secondary link when the all or partial bandwidth of the secondary link
is idle.
Figure 59 Network diagram
Configuration procedures
# Configure IP addresses for interfaces according to the network diagram, and configure the default
gateway address as 10.0.0.2 on the router (Site X), so that the packets are transmitted over the primary
link by default. (Details not shown)
# Configure ACL 3000 and ACL 3001 to match video traffic and non-video traffic, respectively.
<Router> system-view
[Router] acl number 3000 name video
[Router-acl-adv-3000-video] rule 0 permit udp destination-port eq 3000