Configuring a VPLS Service with CLI
Page 432 7750 SR OS Services Guide
Configuring Policy-Based Forwarding for Deep Packet Inspection
in VPLS
The purpose policy-based forwarding is to capture traffic from a customer and perform a deep
packet inspection (DPI) and forward traffic, if allowed, by the DPI.
In the following example, the split horizon groups are used to prevent flooding of traffic. Traffic
from customers enter at SAP 1/1/5:5. Due to the mac-filter 100 that is applied on ingress, all traffic
with dot1p 07 marking will be forwarded to SAP 1/1/22:1, which is the DPI.
DPI performs packet inspection/modifcation and either drops the traffic or forwards the traffic
back into the box through SAP 1/1/21:1. Traffic will then be sent to spoke-sdp 3:5.
SAP 1/1/23:5 is configured to see if the VPLS service is flooding all the traffic. If flooding is
peformed by the router then traffic would also be sent to SAP 1/1/23:5 (which it should not).
Figure 48 shows an example to configure policy-based forwarding for deep packet inspection on a
VPLS service. For information about configuring filter policies, refer to the 7750 SR OS Router
Configuration Guide.
Figure 6: Policy-Based Forwarding For Deep Packet Inspection
DPI BOX
Normal Stream
PBF Dirverted Stream
Residential Split
VPLS 10
Disable Learning
IngressPBF Filter
on Incoming Traffic
VPLS 10
Split Horizon SAPs
To Next Page
Loading...
