- play_arrow Understanding and Configuring Junos Routing Policies
- play_arrow Overview
- Policy Framework Overview
- Comparison of Routing Policies and Firewall Filters
- Prefix Prioritization Overview
- FIB Prefix Prioritization
- Accounting of the Policer Overhead Attribute at the Interface Level
- Configuring the Accounting of Policer Overhead in Interface Statistics
- Understanding Routing Policies
- Protocol Support for Import and Export Policies
- Example: Applying Routing Policies at Different Levels of the BGP Hierarchy
- Default Routing Policies
- Example: Configuring a Conditional Default Route Policy
- play_arrow Evaluating Routing Policies Using Match Conditions, Actions, Terms, and Expressions
- How a Routing Policy Is Evaluated
- Categories of Routing Policy Match Conditions
- Routing Policy Match Conditions
- Route Filter Match Conditions
- Actions in Routing Policy Terms
- Summary of Routing Policy Actions
- Example: Configuring a Routing Policy to Advertise the Best External Route to Internal Peers
- Example: Configuring BGP to Advertise Inactive Routes
- Example: Using Routing Policy to Set a Preference Value for BGP Routes
- Example: Enabling BGP Route Advertisements
- Example: Rejecting Known Invalid Routes
- Example: Using Routing Policy in an ISP Network
- Understanding Policy Expressions
- Understanding Backup Selection Policy for OSPF Protocol
- Configuring Backup Selection Policy for the OSPF Protocol
- Configuring Backup Selection Policy for IS-IS Protocol
- Example: Configuring Backup Selection Policy for the OSPF or OSPF3 Protocol
- play_arrow Evaluating Complex Cases Using Policy Chains and Subroutines
- play_arrow Configuring Route Filters and Prefix Lists as Match Conditions
- Understanding Route Filters for Use in Routing Policy Match Conditions
- Understanding Route Filter and Source Address Filter Lists for Use in Routing Policy Match Conditions
- Understanding Load Balancing Using Source or Destination IP Only
- Configuring Load Balancing Using Source or Destination IP Only
- Walkup for Route Filters Overview
- Configuring Walkup for Route Filters to Improve Operational Efficiency
- Example: Configuring Route Filter Lists
- Example: Configuring Walkup for Route Filters Globally to Improve Operational Efficiency
- Example: Configuring Walkup for Route Filters Locally to Improve Operational Efficiency
- Example: Configuring a Route Filter Policy to Specify Priority for Prefixes Learned Through OSPF
- Example: Configuring the MED Using Route Filters
- Example: Configuring Layer 3 VPN Protocol Family Qualifiers for Route Filters
- Understanding Prefix Lists for Use in Routing Policy Match Conditions
- Example: Configuring Routing Policy Prefix Lists
- Example: Configuring the Priority for Route Prefixes in the RPD Infrastructure
- Configuring Priority for Route Prefixes in RPD Infrastructure
- play_arrow Configuring AS Paths as Match Conditions
- Understanding AS Path Regular Expressions for Use as Routing Policy Match Conditions
- Example: Using AS Path Regular Expressions
- Understanding Prepending AS Numbers to BGP AS Paths
- Example: Configuring a Routing Policy for AS Path Prepending
- Understanding Adding AS Numbers to BGP AS Paths
- Example: Advertising Multiple Paths in BGP
- Improve the Performance of AS Path Lookup in BGP Policy
- play_arrow Configuring Communities as Match Conditions
- Understanding BGP Communities, Extended Communities, and Large Communities as Routing Policy Match Conditions
- Understanding How to Define BGP Communities and Extended Communities
- How BGP Communities and Extended Communities Are Evaluated in Routing Policy Match Conditions
- Example: Configuring Communities in a Routing Policy
- Example: Configuring Extended Communities in a Routing Policy
- Example: Configuring BGP Large Communities
- Example: Configuring a Routing Policy Based on the Number of BGP Communities
- Example: Configuring a Routing Policy That Removes BGP Communities
- play_arrow Increasing Network Stability with BGP Route Flapping Actions
- play_arrow Tracking Traffic Usage with Source Class Usage and Destination Class Usage Actions
- Understanding Source Class Usage and Destination Class Usage Options
- Source Class Usage Overview
- Guidelines for Configuring SCU
- System Requirements for SCU
- Terms and Acronyms for SCU
- Roadmap for Configuring SCU
- Roadmap for Configuring SCU with Layer 3 VPNs
- Configuring Route Filters and Source Classes in a Routing Policy
- Applying the Policy to the Forwarding Table
- Enabling Accounting on Inbound and Outbound Interfaces
- Configuring Input SCU on the vt Interface of the Egress PE Router
- Mapping the SCU-Enabled vt Interface to the VRF Instance
- Configuring SCU on the Output Interface
- Associating an Accounting Profile with SCU Classes
- Verifying Your SCU Accounting Profile
- SCU Configuration
- SCU with Layer 3 VPNs Configuration
- Example: Grouping Source and Destination Prefixes into a Forwarding Class
- play_arrow Avoiding Traffic Routing Threats with Conditional Routing Policies
- Conditional Advertisement and Import Policy (Routing Table) with certain match conditions
- Conditional Advertisement Enabling Conditional Installation of Prefixes Use Cases
- Example: Configuring a Routing Policy for Conditional Advertisement Enabling Conditional Installation of Prefixes in a Routing Table
- play_arrow Protecting Against DoS Attacks by Forwarding Traffic to the Discard Interface
- play_arrow Improving Commit Times with Dynamic Routing Policies
- play_arrow Testing Before Applying Routing Policies
-
- play_arrow Configuring Firewall Filters
- play_arrow Understanding How Firewall Filters Protect Your Network
- Firewall Filters Overview
- Router Data Flow Overview
- Stateless Firewall Filter Overview
- Understanding How to Use Standard Firewall Filters
- Understanding How Firewall Filters Control Packet Flows
- Stateless Firewall Filter Components
- Stateless Firewall Filter Application Points
- How Standard Firewall Filters Evaluate Packets
- Understanding Firewall Filter Fast Lookup Filter
- Understanding Egress Firewall Filters with PVLANs
- Selective Class-based Filtering on PTX Routers
- Guidelines for Configuring Firewall Filters
- Guidelines for Applying Standard Firewall Filters
- Supported Standards for Filtering
- Monitoring Firewall Filter Traffic
- Troubleshooting Firewall Filters
- play_arrow Firewall Filter Match Conditions and Actions
- Overview of Firewall Filters (OCX Series)
- Overview of Firewall Filter Profiles on ACX Series Routers (Junos OS Evolved)
- Understanding Firewall Filter Match Conditions
- Understanding Firewall Filter Planning
- Understanding How Firewall Filters Are Evaluated
- Understanding Firewall Filter Match Conditions
- Firewall Filter Flexible Match Conditions
- Firewall Filter Nonterminating Actions
- Firewall Filter Terminating Actions
- Firewall Filter Match Conditions and Actions (ACX Series Routers)
- Firewall Filter Match Conditions and Actions in ACX Series Routers (Junos OS Evolved)
- Firewall Filter Match Conditions for Protocol-Independent Traffic
- Firewall Filter Match Conditions for IPv4 Traffic
- Firewall Filter Match Conditions for IPv6 Traffic
- Firewall Filter Match Conditions Based on Numbers or Text Aliases
- Firewall Filter Match Conditions Based on Bit-Field Values
- Firewall Filter Match Conditions Based on Address Fields
- Firewall Filter Match Conditions Based on Address Classes
- Understanding IP-Based Filtering and Selective Port Mirroring of MPLS Traffic
- Firewall Filter Match Conditions for MPLS Traffic
- Firewall Filter Match Conditions for MPLS-Tagged IPv4 or IPv6 Traffic
- Firewall Filter Match Conditions for VPLS Traffic
- Firewall Filter Match Conditions for Layer 2 CCC Traffic
- Firewall Filter Match Conditions for Layer 2 Bridging Traffic
- Firewall Filter Support on Loopback Interface
- play_arrow Applying Firewall Filters to Routing Engine Traffic
- Configuring Logical Units on the Loopback Interface for Routing Instances in Layer 3 VPNs
- Example: Configuring a Filter to Limit TCP Access to a Port Based On a Prefix List
- Example: Configuring a Stateless Firewall Filter to Accept Traffic from Trusted Sources
- Example: Configure a Filter to Block Telnet and SSH Access
- Example: Configuring a Filter to Block TFTP Access
- Example: Configuring a Filter to Accept Packets Based on IPv6 TCP Flags
- Example: Configuring a Filter to Block TCP Access to a Port Except from Specified BGP Peers
- Example: Configuring a Stateless Firewall Filter to Protect Against TCP and ICMP Floods
- Example: Protecting the Routing Engine with a Packets-Per-Second Rate Limiting Filter
- Example: Configuring a Filter to Exclude DHCPv6 and ICMPv6 Control Traffic for LAC Subscriber
- Port Number Requirements for DHCP Firewall Filters
- Example: Configuring a DHCP Firewall Filter to Protect the Routing Engine
- play_arrow Applying Firewall Filters to Transit Traffic
- Example: Configuring a Filter for Use as an Ingress Queuing Filter
- Example: Configuring a Filter to Match on IPv6 Flags
- Example: Configuring a Filter to Match on Port and Protocol Fields
- Example: Configuring a Filter to Count Accepted and Rejected Packets
- Example: Configuring a Filter to Count and Discard IP Options Packets
- Example: Configuring a Filter to Count IP Options Packets
- Example: Configuring a Filter to Count and Sample Accepted Packets
- Example: Configuring a Filter to Set the DSCP Bit to Zero
- Example: Configuring a Filter to Set the DSCP Bit to Zero
- Example: Configuring a Filter to Match on Two Unrelated Criteria
- Example: Configuring a Filter to Accept DHCP Packets Based on Address
- Example: Configuring a Filter to Accept OSPF Packets from a Prefix
- Example: Configuring a Stateless Firewall Filter to Handle Fragments
- Configuring a Firewall Filter to Prevent or Allow IPv4 Packet Fragmentation
- Configuring a Firewall Filter to Discard Ingress IPv6 Packets with a Mobility Extension Header
- Example: Configuring an Egress Filter Based on IPv6 Source or Destination IP Addresses
- Example: Configuring a Rate-Limiting Filter Based on Destination Class
- play_arrow Configuring Firewall Filters in Logical Systems
- Firewall Filters in Logical Systems Overview
- Guidelines for Configuring and Applying Firewall Filters in Logical Systems
- References from a Firewall Filter in a Logical System to Subordinate Objects
- References from a Firewall Filter in a Logical System to Nonfirewall Objects
- References from a Nonfirewall Object in a Logical System to a Firewall Filter
- Example: Configuring Filter-Based Forwarding
- Example: Configuring Filter-Based Forwarding on Logical Systems
- Example: Configuring a Stateless Firewall Filter to Protect a Logical System Against ICMP Floods
- Example: Configuring a Stateless Firewall Filter to Protect a Logical System Against ICMP Floods
- Unsupported Firewall Filter Statements for Logical Systems
- Unsupported Actions for Firewall Filters in Logical Systems
- Filter-Based Forwarding for Routing Instances
- Forwarding Table Filters for Routing Instances on ACX Series Routers
- Configuring Forwarding Table Filters
- play_arrow Configuring Firewall Filter Accounting and Logging
- play_arrow Attaching Multiple Firewall Filters to a Single Interface
- Applying Firewall Filters to Interfaces
- Configuring Firewall Filters
- Multifield Classifier Example: Configuring Multifield Classification
- Multifield Classifier for Ingress Queuing on MX Series Routers with MPC
- Assigning Multifield Classifiers in Firewall Filters to Specify Packet-Forwarding Behavior (CLI Procedure)
- Understanding Multiple Firewall Filters in a Nested Configuration
- Guidelines for Nesting References to Multiple Firewall Filters
- Understanding Multiple Firewall Filters Applied as a List
- Guidelines for Applying Multiple Firewall Filters as a List
- Example: Applying Lists of Multiple Firewall Filters
- Example: Nesting References to Multiple Firewall Filters
- Example: Filtering Packets Received on an Interface Set
- play_arrow Attaching a Single Firewall Filter to Multiple Interfaces
- Interface-Specific Firewall Filter Instances Overview
- Interface-Specific Firewall Filter Instances Overview
- Filtering Packets Received on a Set of Interface Groups Overview
- Filtering Packets Received on an Interface Set Overview
- Example: Configuring Interface-Specific Firewall Filter Counters
- Example: Configuring a Stateless Firewall Filter on an Interface Group
- play_arrow Configuring Filter-Based Tunneling Across IP Networks
- Understanding Filter-Based Tunneling Across IPv4 Networks
- Firewall Filter-Based L2TP Tunneling in IPv4 Networks Overview
- Interfaces That Support Filter-Based Tunneling Across IPv4 Networks
- Components of Filter-Based Tunneling Across IPv4 Networks
- Example: Transporting IPv6 Traffic Across IPv4 Using Filter-Based Tunneling
- play_arrow Configuring Service Filters
- Service Filter Overview
- How Service Filters Evaluate Packets
- Guidelines for Configuring Service Filters
- Guidelines for Applying Service Filters
- Example: Configuring and Applying Service Filters
- Service Filter Match Conditions for IPv4 or IPv6 Traffic
- Service Filter Nonterminating Actions
- Service Filter Terminating Actions
- play_arrow Configuring Simple Filters
- play_arrow Configuring Layer 2 Firewall Filters
- Understanding Firewall Filters Used to Control Traffic Within Bridge Domains and VPLS Instances
- Example: Configuring Filtering of Frames by MAC Address
- Example: Configuring Filtering of Frames by IEEE 802.1p Bits
- Example: Configuring Filtering of Frames by Packet Loss Priority
- Example: Configuring Policing and Marking of Traffic Entering a VPLS Core
- Understanding Firewall Filters on OVSDB-Managed Interfaces
- Example: Applying a Firewall Filter to OVSDB-Managed Interfaces
- play_arrow Configuring Firewall Filters for Forwarding, Fragments, and Policing
- Filter-Based Forwarding Overview
- Firewall Filters That Handle Fragmented Packets Overview
- Stateless Firewall Filters That Reference Policers Overview
- Example: Configuring Filter-Based Forwarding on the Source Address
- Example: Configuring Filter-Based Forwarding to a Specific Outgoing Interface or Destination IP Address
- play_arrow Configuring Firewall Filters (EX Series Switches)
- Firewall Filters for EX Series Switches Overview
- Understanding Planning of Firewall Filters
- Understanding Firewall Filter Match Conditions
- Understanding How Firewall Filters Control Packet Flows
- Understanding How Firewall Filters Are Evaluated
- Understanding Firewall Filter Processing Points for Bridged and Routed Packets on EX Series Switches
- Firewall Filter Match Conditions, Actions, and Action Modifiers for EX Series Switches
- Platform Support for Firewall Filter Match Conditions, Actions, and Action Modifiers on EX Series Switches
- Support for Match Conditions and Actions for Loopback Firewall Filters on Switches
- Configuring Firewall Filters (CLI Procedure)
- Understanding How Firewall Filters Test a Packet's Protocol
- Understanding Filter-Based Forwarding for EX Series Switches
- Example: Configuring Firewall Filters for Port, VLAN, and Router Traffic on EX Series Switches
- Example: Configuring a Firewall Filter on a Management Interface on an EX Series Switch
- Example: Using Filter-Based Forwarding to Route Application Traffic to a Security Device
- Example: Applying Firewall Filters to Multiple Supplicants on Interfaces Enabled for 802.1X or MAC RADIUS Authentication
- Verifying That Policers Are Operational
- Troubleshooting Firewall Filters
- play_arrow Configuring Firewall Filters (QFX Series Switches, EX4600 Switches, PTX Series Routers)
- Overview of Firewall Filters (QFX Series)
- Understanding Firewall Filter Planning
- Planning the Number of Firewall Filters to Create
- Firewall Filter Match Conditions and Actions (QFX and EX Series Switches)
- Firewall Filter Match Conditions and Actions (QFX10000 Switches)
- Firewall Filter Match Conditions and Actions (PTX Series Routers)
- Firewall and Policing Differences Between PTX Series Packet Transport Routers and T Series Matrix Routers
- Configuring Firewall Filters
- Applying Firewall Filters to Interfaces
- Overview of MPLS Firewall Filters on Loopback Interface
- Configuring MPLS Firewall Filters and Policers on Switches
- Configuring MPLS Firewall Filters and Policers on Routers
- Configuring MPLS Firewall Filters and Policers
- Understanding How a Firewall Filter Tests a Protocol
- Understanding Firewall Filter Processing Points for Bridged and Routed Packets
- Understanding Filter-Based Forwarding
- Example: Using Filter-Based Forwarding to Route Application Traffic to a Security Device
- Configuring a Firewall Filter to De-Encapsulate GRE or IPIP Traffic
- Verifying That Firewall Filters Are Operational
- Monitoring Firewall Filter Traffic
- Troubleshooting Firewall Filter Configuration
- play_arrow Configuring Firewall Filter Accounting and Logging (EX9200 Switches)
-
- play_arrow Configuration Statements and Operational Commands
- play_arrow Troubleshooting
- play_arrow Knowledge Base
-
Basic Two-Rate Three-Color Policers
Two-Rate Three-Color Policer Overview
A two-rate three-color policer defines two bandwidth limits (one for guaranteed traffic and one for peak traffic) and two burst sizes (one for each of the bandwidth limits). A two-rate three-color policer is most useful when a service is structured according to arrival rates and not necessarily packet length.
Two-rate three-color policing meters a traffic stream based on the following configured traffic criteria:
Committed information rate (CIR)—Bandwidth limit for guaranteed traffic.
Committed burst size (CBS)—Maximum packet size permitted for bursts of data that exceed the CIR.
Peak information rate (PIR)—Bandwidth limit for peak traffic.
Peak burst size (PBS)—Maximum packet size permitted for bursts of data that exceed the PIR.
Two-rate tricolor marking (two-rate TCM) classifies traffic as belonging to one of three color categories and performs congestion-control actions on the packets based on the color marking:
Green—Traffic that conforms to the bandwidth limit and burst size for guaranteed traffic (CIR and CBS). For a green traffic flow, two-rate TCM marks the packets with an implicit loss priority of
lowand transmits the packets.Yellow—Traffic that exceeds the bandwidth limit or burst size for guaranteed traffic (CIR or CBS) but not the bandwidth limit and burst size for peak traffic (PIR and PBS). For a yellow traffic flow, two-rate TCM marks packets with an implicit loss priority of
medium-highand transmits the packets.Red—Traffic that exceeds the bandwidth limit and burst size for peak traffic (PIR and PBS). For a red traffic flow, two-rate TCM marks packets with an implicit loss priority of
highand, optionally, discards the packets.
If congestion occurs downstream, the packets with higher loss priority are more likely to be discarded.
For both single-rate and two-rate three-color policers, the only configurable action is to discard packets in a red traffic flow.
For a tricolor marking policer referenced by a firewall filter term, the discard policing
action is supported on the following routing platforms:
EX Series switches
M7i and M10i routers with the Enhanced CFEB (CFEB-E)
M120 and M320 routers with Enhanced-III FPCs
MX Series routers with Trio MPCs
To apply a tricolor marking policer on these routing platforms,
it is not necessary to include the logical-interface-policer statement.
See Also
Example: Configuring a Two-Rate Three-Color Policer
This example shows how to configure a two-rate three-color policer.
Requirements
Support for two-rate three-color policers varies according to the device. It includes SRX1400, SRX3400, SRX3600, SRX5400, SRX5600, and SRX5800 Firewall devices running a compatible version of Junos OS.
No special configuration beyond device initialization is required before configuring this example.
Overview
A two-rate three-color policer meters a traffic flow against a bandwidth limit and burst-size limit for guaranteed traffic, plus a bandwidth limit and burst-size limit for peak traffic. Traffic that conforms to the limits for guaranteed traffic is categorized as green, and nonconforming traffic falls into one of two categories:
Nonconforming traffic that does not exceed peak traffic limits is categorized as yellow.
Nonconforming traffic that exceeds peak traffic limits is categorized as red.
Each category is associated with an action. For green traffic, packets are implicitly set with a loss-priority value of low and then transmitted.
For yellow traffic, packets are implicitly set with a loss-priority value of medium-high and then transmitted. For red traffic, packets are implicitly
set with a loss-priority value of high and then transmitted. If the policer configuration includes the optional action statement (action loss-priority
high then discard), then packets in a red flow are discarded instead.
You can apply a three-color policer to Layer 3 traffic as a firewall filter policer only. You reference the policer from a stateless firewall filter term, and then you apply the filter to the input or output of a logical interface at the protocol level.
Topology
In this example, you apply a color-aware, two-rate three-color policer to the input IPv4 traffic at logical interface fe-0/1/1.0. The IPv4
firewall filter term that references the policer does not apply any packet-filtering. The filter is used only to apply the three-color policer to the
interface.
You configure the policer to rate-limit traffic to a bandwidth limit of 40 Mbps and a burst-size limit of 100 KB for green traffic, and you
configure the policer to also allow a peak bandwidth limit of 60 Mbps and a peak burst-size limit of 200 KB for yellow traffic. Only nonconforming
traffic that exceeds the peak traffic limits is categorized as red. In this example, you configure the three-color policer action loss-priority high
then discard, which overrides the implicit marking of red traffic to a high loss priority.
Configuration
The following example requires you to navigate various levels in the configuration hierarchy. For information about navigating the CLI, see Using the CLI Editor in Configuration Mode.
To configure this example, perform the following tasks:
- CLI Quick Configuration
- Configuring a Two-Rate Three-Color Policer
- Configuring an IPv4 Stateless Firewall Filter That References the Policer
- Applying the Filter to a Logical Interface at the Protocol Family Level
CLI Quick Configuration
To quickly configure this example, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary
to match your network configuration, copy and then paste the commands into the CLI at the [edit] hierarchy level, and then enter commit from
configuration mode.
set firewall three-color-policer trTCM1-ca two-rate color-aware set firewall three-color-policer trTCM1-ca two-rate committed-information-rate 40m set firewall three-color-policer trTCM1-ca two-rate committed-burst-size 100k set firewall three-color-policer trTCM1-ca two-rate peak-information-rate 60m set firewall three-color-policer trTCM1-ca two-rate peak-burst-size 200k set firewall three-color-policer trTCM1-ca action loss-priority high then discard set firewall family inet filter filter-trtcm1ca-all term 1 then three-color-policer two-rate trTCM1-ca set interfaces ge-2/0/5 unit 0 family inet address 10.10.10.1/30 set interfaces ge-2/0/5 unit 0 family inet filter input filter-trtcm1ca-all set class-of-service interfaces ge-2/0/5 forwarding-class af
Configuring a Two-Rate Three-Color Policer
Step-by-Step Procedure
To configure a two-rate three-color policer:
Enable configuration of a three-color policer.
content_copy zoom_out_map[edit] user@host# set firewall three-color-policer trTCM1-ca
Configure the color mode of the two-rate three-color policer.
content_copy zoom_out_map[edit firewall three-color-policer trTCM1-ca] user@host# set two-rate color-aware
Configure the two-rate guaranteed traffic limits.
content_copy zoom_out_map[edit firewall three-color-policer trTCM1-ca] user@host# set two-rate committed-information-rate 40m user@host# set two-rate committed-burst-size 100k
Traffic that does not exceed both of these limits is categorized as green. Packets in a green flow are implicitly set to
lowloss priority and then transmitted.Configure the two-rate peak traffic limits.
content_copy zoom_out_map[edit firewall three-color-policer trTCM1-ca] user@host# set two-rate peak-information-rate 60m user@host# set two-rate peak-burst-size 200k
Nonconforming traffic that does not exceed both of these limits is categorized as yellow. Packets in a yellow flow are implicitly set to
medium-highloss priority and then transmitted. Nonconforming traffic that exceeds both of these limits is categorized as red. Packets in a red flow are implicitly set tohighloss priority.(Optional) Configure the policer action for red traffic.
content_copy zoom_out_map[edit firewall three-color-policer trTCM1-ca] user@host# set action loss-priority high then discard
For three-color policers, the only configurable action is to discard red packets. Red packets are packets that have been assigned high loss priority because they exceeded the peak information rate (PIR) and the peak burst size (PBS).
Results
Confirm the configuration of the policer by entering the show firewall configuration mode command. If the command output does not
display the intended configuration, repeat the instructions in this procedure to correct the configuration.
[edit]
user@host# show firewall
three-color-policer trTCM1-ca {
action {
loss-priority high then discard;
}
two-rate {
color-aware;
committed-information-rate 40m;
committed-burst-size 100k;
peak-information-rate 60m;
peak-burst-size 200k;
}
}
Configuring an IPv4 Stateless Firewall Filter That References the Policer
Step-by-Step Procedure
To configure an IPv4 stateless firewall filter that references the policer:
Enable configuration of an IPv4 standard stateless firewall filter.
content_copy zoom_out_map[edit] user@host# set firewall family inet filter filter-trtcm1ca-all
Specify the filter term that references the policer.
content_copy zoom_out_map[edit firewall family inet filter filter-trtcm1ca-all] user@host# set term 1 then three-color-policer two-rate trTCM1-ca
Note that the term does not specify any match conditions. The firewall filter passes all packets to the policer.
Results
Confirm the configuration of the firewall filter by entering the show firewall configuration mode command. If the command output does
not display the intended configuration, repeat the instructions in this procedure to correct the configuration.
[edit]
user@host# show firewall
family inet {
filter filter-trtcm1ca-all {
term 1 {
then {
three-color-policer {
two-rate trTCM1-ca;
}
}
}
}
}
three-color-policer trTCM1-ca {
action {
loss-priority high then discard;
}
two-rate {
color-aware;
committed-information-rate 40m;
committed-burst-size 100k;
peak-information-rate 60m;
peak-burst-size 200k;
}
}
Applying the Filter to a Logical Interface at the Protocol Family Level
Step-by-Step Procedure
To apply the filter to the logical interface at the protocol family level:
Enable configuration of an IPv4 firewall filter.
content_copy zoom_out_map[edit] user@host# edit interfaces ge-2/0/5 unit 0 family inet
Apply the policer to the logical interface at the protocol family level.
content_copy zoom_out_map[edit interfaces ge-2/0/5 unit 0 family inet] user@host# set address 10.10.10.1/30 user@host# set filter input filter-trtcm1ca-all
(MX Series routers and EX Series switches only) (Optional) For input policers, you can configure a fixed classifier. A fixed classifier reclassifies all incoming packets, regardless of any preexisting classification.
Note:Platform support depends on the Junos OS release in your implementation.
content_copy zoom_out_map[edit] user@host# set class-of-service interfaces ge-2/0/5 forwarding-class af
The classifier name can be a configured classifier or one of the default classifiers.
Results
Confirm the configuration of the interface by entering the show interfaces configuration mode command. If the command output does
not display the intended configuration, repeat the instructions in this procedure to correct the configuration.
[edit]
user@host# show interfaces
ge-2/0/5 {
unit 0 {
family inet {
address 10.10.10.1/30;
filter {
input filter-trtcm1ca-all;
}
}
}
}
If you are done configuring the device, enter commit from configuration mode.
Verification
Confirm that the configuration is working properly.
Displaying the Firewall Filters Applied to the Logical Interface
Purpose
Verify that the firewall filter is applied to IPv4 input traffic at the logical interface.
Action
Use the show interfaces operational mode command for the logical interface ge-2/0/5.0, and specify detail mode.
The Protocol inet section of the command output displays IPv4 information for the logical interface. Within that section, the Input
Filters field displays the name of IPv4 firewall filters associated with the logical interface.
user@host> show interfaces ge-2/0/5.0 detail
Logical interface ge-2/0/5.0 (Index 105) (SNMP ifIndex 556) (Generation 170)
Flags: Device-Down SNMP-Traps 0x4004000 Encapsulation: ENET2
Traffic statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Local statistics:
Input bytes : 0
Output bytes : 0
Input packets: 0
Output packets: 0
Transit statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Protocol inet, MTU: 1500, Generation: 242, Route table: 0
Flags: Sendbcast-pkt-to-re
Input Filters: filter-trtcm1ca-all
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 10.20.130/24, Local: 10.20.130.1, Broadcast: 10.20.130.255,
Generation: 171
Protocol multiservice, MTU: Unlimited, Generation: 243, Route table: 0
Policer: Input: __default_arp_policer__
