- play_arrow Basic CoS Configuration
- play_arrow CoS Overview
- play_arrow CoS on Interfaces
- play_arrow CoS Code-Point Aliases
- play_arrow CoS Classifiers
- Understanding CoS Classifiers
- Defining CoS BA Classifiers (DSCP, DSCP IPv6, IEEE 802.1p)
- Example: Configuring Classifiers
- Example: Configuring Unicast Classifiers
- Example: Configuring Multidestination (Multicast, Broadcast, DLF) Classifiers
- Understanding Host Inbound Traffic Classification
- Configuring a Global MPLS EXP Classifier
- Monitoring CoS Classifiers
- play_arrow CoS Rewrite Rules
- Understanding CoS Rewrite Rules
- Defining CoS Rewrite Rules
- Understanding Applying CoS Classifiers and Rewrite Rules to Interfaces
- Troubleshooting an Unexpected Rewrite Value
- Understanding CoS MPLS EXP Classifiers and Rewrite Rules
- Configuring Rewrite Rules for MPLS EXP Classifiers
- Monitoring CoS Rewrite Rules
- play_arrow CoS Forwarding Classes and Forwarding Class Sets
- Understanding CoS Forwarding Classes
- Defining CoS Forwarding Classes
- Forwarding Policy Options Overview
- Configuring CoS-Based Forwarding
- Example: Configuring CoS-Based Forwarding
- Example: Configuring Forwarding Classes
- Understanding CoS Forwarding Class Sets (Priority Groups)
- Defining CoS Forwarding Class Sets
- Example: Configuring Forwarding Class Sets
- Monitoring CoS Forwarding Classes
- play_arrow Lossless Traffic Flows, Ethernet PAUSE Flow Control, and PFC
- Understanding CoS IEEE 802.1p Priorities for Lossless Traffic Flows
- Configuring CoS PFC (Congestion Notification Profiles)
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- Enabling and Disabling CoS Symmetric Ethernet PAUSE Flow Control
- Configuring CoS Asymmetric Ethernet PAUSE Flow Control
- Understanding PFC Functionality Across Layer 3 Interfaces
- Example: Configuring PFC Across Layer 3 Interfaces
- Understanding PFC Using DSCP at Layer 3 for Untagged Traffic
- Configuring DSCP-based PFC for Layer 3 Untagged Traffic
- play_arrow CoS and Host Outbound Traffic
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- play_arrow CoS Queue Schedulers, Traffic Control Profiles, and Hierarchical Port Scheduling (ETS)
- play_arrow Queue Schedulers and Scheduling Priority
- Understanding Default CoS Scheduling and Classification
- Understanding CoS Scheduling Behavior and Configuration Considerations
- Understanding CoS Output Queue Schedulers
- Defining CoS Queue Schedulers
- Example: Configuring Queue Schedulers
- Defining CoS Queue Scheduling Priority
- Example: Configuring Queue Scheduling Priority
- Monitoring CoS Scheduler Maps
- play_arrow Port Scheduling and Shaping
- play_arrow Troubleshooting Egress Bandwidth Issues
- play_arrow Traffic Control Profiles and Priority Group Scheduling
- Understanding CoS Traffic Control Profiles
- Understanding CoS Priority Group Scheduling
- Understanding CoS Virtual Output Queues (VOQs)
- Defining CoS Traffic Control Profiles (Priority Group Scheduling)
- Example: Configuring Traffic Control Profiles (Priority Group Scheduling)
- Understanding CoS Priority Group and Queue Guaranteed Minimum Bandwidth
- Example: Configuring Minimum Guaranteed Output Bandwidth
- Understanding CoS Priority Group Shaping and Queue Shaping (Maximum Bandwidth)
- Example: Configuring Maximum Output Bandwidth
- play_arrow Hierarchical Port Scheduling (ETS)
-
- play_arrow Data Center Bridging and Lossless FCoE
- play_arrow Data Center Bridging
- Understanding DCB Features and Requirements
- Understanding DCBX
- Configuring the DCBX Mode
- Configuring DCBX Autonegotiation
- Understanding DCBX Application Protocol TLV Exchange
- Defining an Application for DCBX Application Protocol TLV Exchange
- Configuring an Application Map for DCBX Application Protocol TLV Exchange
- Applying an Application Map to an Interface for DCBX Application Protocol TLV Exchange
- Example: Configuring DCBX Application Protocol TLV Exchange
- play_arrow Lossless FCoE
- Example: Configuring CoS PFC for FCoE Traffic
- Example: Configuring CoS for FCoE Transit Switch Traffic Across an MC-LAG
- Example: Configuring CoS Using ELS for FCoE Transit Switch Traffic Across an MC-LAG
- Example: Configuring Lossless FCoE Traffic When the Converged Ethernet Network Does Not Use IEEE 802.1p Priority 3 for FCoE Traffic (FCoE Transit Switch)
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Troubleshooting Dropped FCoE Traffic
-
- play_arrow CoS Buffers and the Shared Buffer Pool
- play_arrow CoS Buffers Overview
- play_arrow Shared Buffer Pool Examples
- Example: Recommended Configuration of the Shared Buffer Pool for Networks with Mostly Best-Effort Unicast Traffic
- Example: Recommended Configuration of the Shared Buffer Pool for Networks with Mostly Best-Effort Traffic on Links with Ethernet PAUSE Enabled
- Example: Recommended Configuration of the Shared Buffer Pool for Networks with Mostly Multicast Traffic
- Example: Recommended Configuration of the Shared Buffer Pool for Networks with Mostly Lossless Traffic
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- play_arrow CoS on EVPN VXLANs
- play_arrow Configuration Statements and Operational Commands
ON THIS PAGE
Example: Configuring Drop Profile Maps
A drop-profile map associates weighted random early detection (WRED) profiles for traffic of specified packet loss priorities with a scheduler. When you use a scheduler map to map a scheduler to a forwarding class, the drop profile map associated with the scheduler applies the specified WRED drop profile to traffic in the forwarding class that matches the specified packet loss priority.
Configuring a Drop Profile Map
CLI Quick Configuration
To quickly configure a drop profile map, copy the following commands, paste them in a text file, remove line breaks, change variables and details to match your network configuration, and then copy and paste the commands into the CLI at the [edit] hierarchy level.
[edit class-of-service] set schedulers mylan drop-profile-map loss-priority low protocol any drop-profile lp-profile set schedulers mylan drop-profile-map loss-priority medium-high protocol any drop-profile mh-profile set schedulers mylan drop-profile-map loss-priority high protocol any drop-profile h-profile
Step-by-Step Procedure
To configure a drop profile map:
Configure the drop profile for low-priority traffic:
content_copy zoom_out_map[edit class-of-service] user@switch# set schedulers mylan drop-profile-map loss-priority low protocol any drop-profile lp-profile
Configure the drop profile for medium-high priority traffic:
content_copy zoom_out_map[edit class-of-service] user@switch# set schedulers mylan drop-profile-map loss-priority medium-high protocol any drop-profile mh-profile
Configure the drop profile for high-priority traffic:
content_copy zoom_out_map[edit class-of-service] user@switch# set schedulers mylan drop-profile-map loss-priority high protocol any drop-profile h-profile
Requirements
This example uses the following hardware and software components:
A Juniper Networks QFX3500 Switch
Junos OS Release 11.1 or later for the QFX Series or Junos OS Release 14.1X53-D20 or later for the OCX Series.
Overview
Drop profile maps enable you to configure different drop profiles for traffic of different packet loss priorities within the same scheduler. You can associate different drop profiles with low-priority, medium-high priority, and high-priority traffic within a single scheduler, and then map that scheduler to a forwarding class. This applies the appropriate drop profile to traffic of each loss priority in a forwarding class. Drop profile maps apply to all traffic protocols.
The following example describes how to configure a drop profile
map for a scheduler named mylan that includes:
A drop profile called
lp-profilefor low-priority trafficA drop profile called
mh-profilefor medium-high priority trafficA drop profile called
h-profilefor high-priority traffic
You apply the drop profiles in the drop profile map to a forwarding
class by associating the scheduler mylan with a forwarding
class in a scheduler map.
Verification
Verifying the Drop Profile Map Configuration
Purpose
Verify that you configured the drop profile map for
the scheduler mylan with the correct loss priorities and
drop profiles.
Action
Verify the results of the drop profile map configuration
using the operational mode command show configuration class-of-service
schedulers mylan:
user@switch> show configuration class-of-service schedulers mylan transmit-rate 3g; shaping-rate percent 100; priority low; drop-profile-map loss-priority low protocol any drop-profile lp-profile; drop-profile-map loss-priority medium-high protocol any drop-profile mh-profile; drop-profile-map loss-priority high protocol any drop-profile h-profile;
This example does not include configuring scheduler bandwidth and priority. This information (transmit rate, shaping rate, and priority) is shown for completeness.
