Juniper Networks JUNOS OS 10.4 User Manual

Page 127

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2.

Apply the firewall filter

filter-learn-vlan-configure-forwarding

as an input filter to

ge-0/0/0

:

[edit interfaces]
ge-0/0/0 {

unit 0 {

family bridge {

filter {

input filter-learn-vlan-configure-forwarding;

}

}

}

}

Related

Documentation

Layer 2 Firewall Filters

Firewall Filters for Bridge Domains and VPLS Instances on page 101

Example: Configuring Policing and Marking of Traffic Entering a VPLS Core on page 102

Example: Configuring Filtering of Frames by MAC Address on page 104

Example: Configuring Filtering of Frames by Packet Loss Priority on page 107

Example: Configuring Filtering of Frames by Packet Loss Priority

To configure an MX Series router firewall filter to provide matching on the packet loss
priority (PLP) level carried in the frame, use the

loss-priority

or

loss-priority-except

match

condition. Packet loss priority matching is available for all protocols. For more detailed
information about configuring firewall filters and configuring filter match conditions for
Layer 2 bridging traffic on the MX Series routers, see the Routing Policy Configuration
Guide.

NOTE:

Layer 2 bridging is supported only on the MX Series routers. For more

information about how to configure Layer 2 bridging, see the Junos® OS
Network Interfaces, the Junos OS Routing Protocols Configuration Guide,
and the Junos OS Feature Guides.

This example Layer 2 bridging firewall filter finds any incoming frames with a packet loss
priority (PLP) level of

medium-high

, and then classifies the packet in the

expedited-forwarding

default forwarding class.

NOTE:

This example does not present exhaustive configuration listings for

all routers in the figures. However, you can use this example with a broader
configuration strategy to complete the MX Series router network Ethernet
Operations, Administration, and Maintenance (OAM) configurations.

107

Copyright © 2013, Juniper Networks, Inc.

Chapter 9: Layer 2 Firewall Filters

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