ASR 9000 Ethernet Line Cards -TR and -SE Comparison Table and Common Error Messages

Introduction

Prerequisites

RequirementsComponents Used

Background Information

Typhoon, Tomahawk based -TR and -SE Line cards Resources Comparison Table

ASR 9001 Built-in Ports

Packet Transport Optimized (-TR) Line cards Common QoS Error messagesASR 9000 Series Line Card Types

The information in this document was created from the devices in a specific lab environment. All the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.

Background Information

ASR 9000 platform ethernet line cards are classified based on their Network Processor (NP) name. First generation line cards are referred as Trident-based, second generation as Typhoon-based and third generation as Tomahawk-based.

Prefixes -TR and -SE are used in Typhoon and Tomahawk based line cards. These prefixes stand for:

SE - Services Edge Optimized
TR - Packet Transport Optimized

Among the Typhoon and Tomahawk line cards there are variants of the same type of line card, for example:

Typhoon

A9K-MOD80-SE
A9K-MOD80-TR

Tomahawk

A9K-8X100G-LB-SE
A9K-8X100G-LB-TR

These variants difference from each other mainly by the resources available in their Network Processors (NPs) for Quality of Service (QoS) and Ethernet Flowpoints (EFPs) capabilities. Knowledge of these differences is important to meet network design requirements, network growth plan or troubleshoot hardware capacity issues related to ASR 9000 platform deployments.

Typhoon, Tomahawk based -TR and -SE Line cards Resources Comparison Table

ASR 9001 Built-in Ports

ASR 9001 built-in ports do not behave as Packet Transport Optimized Line card (-TR) ports and are not subject to -TR QoS/EFP limitations. Instead, they provide all capabilities of a Service Edge (-SE) line card.

Note: Different line card variants such as the -TR and the -SE can coexist in the same chassis. They do not cause any conflict in the system.

Packet Transport Optimized (-TR) Line cards Common QoS Error messages

Be particularly aware of Packet Transport Optimized (-TR) Ethernet Line card variants limitations:

Packet Transport Optimized (-TR) line cards support only up to 6 non-priority queues (consider that class-default queue counts as one non-priority queue) + 2 priority queues.

You can configure only up to 5 non-priority queues+class-default queue. If you exceed this limitation the next error message is seen:

<span style="font-family: "Times New Roman";">RP/0/RSP0/CPU0:ASR9000(config-if)#service-policy output TRcardPolicy<br>RP/0/RSP0/CPU0:ASR9000(config-pmap)#commit<br><br>% Failed to commit one or more configuration items during a pseudo-atomic operation. All changes made have been reverted. Please issue 'show configuration failed [inheritance]' from this session to view the errors<br>RP/0/RSP0/CPU0:ASR9001-D(config-pmap)#show configuration failed<br><br>!! SEMANTIC ERRORS: This configuration was rejected by<br>!! the system due to semantic errors. The individual<br>!! errors with each failed configuration command can be<br>!! found below.<br>...<br>!<br>!!% Given combination of p1, p2, p3, ..., pn queues are not supported at leaf-level of a queuing hierarchy: InPlace Modify Error: Policy pm-core-parent: 'qos-ea' detected the 'warning' condition 'Given combination of p1, p2, p3, ..., pn queues are not supported at leaf-level of a queuing hierarchy'<br>end</span>

Packet Transport Optimized (-TR) line cards support only up to 8 queues per port (consider this if sub-interfaces are used). If the number of queues configured in a port exceeds 7 queues + class-default queue then the next error message is seen:

<span style="font-family: "Times New Roman";">RP/0/RSP0/CPU0:ASR9000(config-if)#service-policy output 9Queues<br>RP/0/RSP0/CPU0:ASR9000(config-pmap)#commit<br><br>% Failed to commit one or more configuration items during a pseudo-atomic operation. All changes made have been reverted. Please issue 'show configuration failed [inheritance]' from this session to view the errors<br>RP/0/RSP0/CPU0:ASR9001-D(config-pmap)#show configuration failed<br><br>!! SEMANTIC ERRORS: This configuration was rejected by <br>!! the system due to semantic errors. The individual <br>!! errors with each failed configuration command can be <br>!! found below.<br>...<br>!!% 'prm_ezhal' detected the 'warning' condition 'Ran out of 8 Queues for the port'<br>!<br>end </span>