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Table of Contents
- play_arrow Weighted Random Early Detection (WRED) and Explicit Congestion Notification (ECN)
- play_arrow WRED and Drop Profiles
- play_arrow Explicit Congestion Notification (ECN)
-
- 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
-
- play_arrow CoS on EVPN VXLANs
- play_arrow Configuration Statements and Operational Commands
list Table of Contents
Example: Configuring CoS-Based Forwarding
date_range
13-Jan-21
Router A has two routes to destination 10.255.71.208 on Router D. One route goes through Router B, and the
other goes through Router C, as shown in Figure 1.
Configure Router A with CoS-based forwarding (CBF) to select Router B for queue 0 and queue 2, and Router C for queue 1 and queue 3.
Figure 1: Sample CoS-Based Forwarding
When you configure CBF with OSPF as the IGP, you must
specify the next hop as an interface name, not as an IPv4 or IPv6
address. The next hops in this example are specified as ge-2/0/0.0 and so-0/3/0.0.
content_copy zoom_out_map
[edit class-of-service]
forwarding-policy {
next-hop-map my_cbf {
forwarding-class be {
next-hop ge-2/0/0.0;
}
forwarding-class ef {
next-hop so-0/3/0.0;
}
forwarding-class af {
next-hop ge-2/0/0.0;
}
forwarding-class nc {
next-hop so-0/3/0.0;
}
}
}
classifiers {
inet-precedence inet {
forwarding-class be {
loss-priority low code-points [ 000 100 ];
}
forwarding-class ef {
loss-priority low code-points [ 001 101 ];
}
forwarding-class af {
loss-priority low code-points [ 010 110 ];
}
forwarding-class nc {
loss-priority low code-points [ 011 111 ];
}
}
}
forwarding-classes {
queue 0 be;
queue 1 ef;
queue 2 af;
queue 3 nc;
}
interfaces {
at-4/2/0 {
unit 0 {
classifiers {
inet-precedence inet;
}
}
}
}
[edit policy-options]
policy-statement cbf {
from {
route-filter 10.255.71.208/32 exact;
}
then cos-next-hop-map my_cbf;
}
[edit routing-options]
graceful-restart;
forwarding-table {
export cbf;
}
[edit interfaces]
traceoptions {
file trace-intf size 5m world-readable;
flag all;
}
so-0/3/0 {
unit 0 {
family inet {
address 10.40.13.1/30;
}
family iso;
family mpls;
}
}
ge-2/0/0 {
unit 0 {
family inet {
address 10.40.12.1/30;
}
family iso;
family mpls;
}
}
at-4/2/0 {
atm-options {
vpi 1 {
maximum-vcs 1200;
}
}
unit 0 {
vci 1.100;
family inet {
address 10.40.11.2/30;
}
family iso;
family mpls;
}
}
