• Tag : LANZ

 
 

LANZ Support on the 7170 Series

Description 4.26.0F adds Latency ANalyZer (LANZ) support to the Arista 7170 series. LANZ monitors the egress queue usage through periodic readings of the high watermark. If a watermark reading is equal to or higher than a configurable high threshold, a congestion event is created and optionally logged. Consecutive high readings are considered to belong to the same congestion and the congestion duration is updated until a reading below or equal to a configurable low threshold is read. LANZ uses the congestion events to provide historical congestion data and per queue congestion statistics. LANZ is detailed in the Latency Analyzer (LANZ)...
Continue reading →

LANZ on 7020R, 7280R, 7280R3, 7500R, 7500R3, and 7800R3 series

Description This document describes the latest status of LANZ on 7020R, 7280R, 7280R3, 7500R, 7500R3, and 7800R3 for both polling and notifying modes. It focuses on the differences between these switches and the 7280E and 7500E series switches. Please refer to the existing documentation (see https://eos.arista.com/eos-4-15-xf/lanz/) for configuring and using LANZ. As of 4.21.0F, LANZ adds notifying mode support for the DCS-7020R series, and by using the counter engines, fixes the notifying mode issues that were present on DCS-7500R and DCS-7280R on earlier versions of EOS. As of 4.23.2F, LANZ adds polling mode support for the DCS-7500R3, DCS-7800R3, and DCS-7280R3...
Continue reading →

Enable LANZ streaming to CVP

Hi, My CVP reports: LANZ streaming is disabled on this device. I’ve tried the following commands om my 7050X3: ! daemon TerminAttr exec /usr/bin/TerminAttr -ingestgrpcurl=:9910 -cvcompression=gzip -ingestauth=key, -smashexcludes=ale,flexCounter,hardware,kni,pulse,strata -ingestexclude=/Sysdb/cell/1/agent,/Sysdb/cell/2/agent -ingestvrf=default -taillogs no shutdown ! queue-monitor length ! queue-monitor length log 2 ! queue-monitor streaming no shutdown ! interface Ethernet41 queue-monitor length thresholds 1000 550 ! What more do I need to do to startLANZ streming to CVP? BR, Niklas

LANZ on 7500R, 7280R and 7020R series

This document describes the latest status of LANZ on DCS-7500R, DCS-7280R and DCS-7020R, for both polling and notifying modes. It focuses on the differences with the 7500E and 7280E series. Please refer to the existing documentation (see https://eos.arista.com/eos-4-15-xf/lanz/) for configuring and using LANZ. As of 4.21.0F, LANZ adds notifying mode support for the DCS-7020R series, and by using the counter engines fixes the notifying mode issues that were present on DCS-7500R and DCS-7280R on earlier versions of EOS. Platform compatibility Platform Polling Mode support Notifying Mode support LANZ enabled by default Default mode DCS-7500E Yes (since EOS-4.14.0F) Yes (since EOS-4.15.0F)...
Continue reading →

Lanz Mirroring

Description Lanz Mirroring feature allows users to automatically mirror traffic queued as a result of congestion to either CPU or a different interface.  Platform compatibility 7150S-64 7150S-52 7150S-24 7050QX-32 7050QX-32S 7050SX-72Q 7050SX-64 7050SX-72 7050SX-96 7050SX-128 7050TX-48 7050TX-64 7050TX-72 7050TX-96 7050TX-128 7050TX-72Q 7050CX3M-32S 7050CX3-32S 7050SX3-48YC12 7050TX3-48C8 7050SX3-48C8 7050SX3-48YC8 7060CX-32S 7060CX-32S-ES 7060CX2-32S 7060SX2-48YC6 7050QX2-32S 7050SX2-72Q 7050SX2-128 7050TX2-128 7010T-48 Configuration Enabling LANZ Mirroring LANZ mirroring is disabled by default. In order to enable LANZ mirroring, LANZ must be enabled. Enabling LANZ mirroring will also reserve one port mirroring session. Arista(config)#queue-monitor length mirror Arista(config)#no queue-monitor length mirror Arista(config)#default queue-monitor length mirror Selecting Destination Interface...
Continue reading →

Testing lanz and reading congestion values

About the next record using lanz   INGESTA2#show queue-monitor length   Report generated at 2018-03-15 01:29:22 E-End, S-Start, P-Polling, TC-Traffic Class * Max queue length during period of congestion Type    Time                              Intf(TC)      Queue       Duration    Ingress                                                         Length                  Port-set              ...
Continue reading →

LANZ Notifying Mode on 7500R, 7280R series

This document describes the current status of LANZ on DCS-7500R, DCS-7280R and DCS-7020R, for both polling and notifying modes. It focuses on the differences with the 7500E and 7280E series. Please refer to the existing documentation (see https://eos.arista.com/eos-4-15-0f/lanz/) for configuring and using LANZ. As of 4.21.0F, LANZ adds notifying mode support for the DCS-7020R series, and by using the counter engines fixes the notifying mode issues that were present on DCS-7500R and DCS-7280R on earlier versions of EOS. Platform compatibility Platform Polling Mode support Notifying Mode support LANZ enabled by default Default mode DCS-7500E Yes (since EOS-4.14.0F) Yes (since EOS-4.15.0F)...
Continue reading →

Multichip and CPU LANZ

Introduction LANZ adds support for monitoring congestion on backplane (or fabric) ports on DCS-7304, DCS-7308, DCS-7316, DCS-7250QX, DCS-7260CX and DCS-7320X. In addition to monitoring congestion on backplane (or fabric), LANZ adds support for monitoring congestion on CPU ports on DCS-7050QX, DCS-7050SX, DCS-7050TX, DCS-7260QX and DCS-7060CX. LANZ streaming is also available for fabric and CPU ports. This page will only demonstrate specific commands for fabric and CPU ports, and for generic LANZ commands, refer to the existing documentation for LANZ. Platform compatibility Monitoring of both CPU and backplane (or fabric) ports is supported on the following platforms: DCS-7304 DCS-7308 DCS-7316 DCS-7250QX...
Continue reading →

How to obtain buffer consumption on Arista 7048T

Hello Everyone This is my first time posting on this forum and I need some suggestion on the Arista 7048T buffer consumption statistics. I need to verify what is the current buffer consumption on the 7048T if there’s any.  I know I can enable LANZ.  But unlike the 7150S, the 7048T doesn’t seem to have a global view of buffer utilization.  I can only configure a threshold at the interface level.  I want to know if there were buffering in the 7048T, how much does it consume.  Is it 2M, 10M 100M, etc…. My question is:  How can I get buffer...
Continue reading →

Latency Analyzer (LANZ) Architectures and Configuration

Introduction   Arista Latency Analyzer, or LANZ, is a technology that tracks and logs buffer congestion and latency in real time.  The visibility provided by LANZ of network hot-spots and microburst oversubscription gives the network operator greater insight into when problems are occurring on the network and why.  With LANZ you will know when congestion happened, track the sources of congestion, and be able to export real-time events to external applications.  LANZ also shows the effect of packet buffering on an application as well as monitors and records packet drops during network congestion.  It is an invaluable tool which allows...
Continue reading →

LANZ – Tuning packet buffer monitoring thresholds – Gain the most adequate visibility to you

This article introduces LANZ briefly, and then concentrate on explaining how you may want to tune the threshold. Threshold tuning allow you to have the right level of visibility for your environment.     1) LANZ Introduction LANZ on the Arista 7150S and other platforms provide trigger-based micro-burst visibility. This guarantees capturing congestion events, even the shortest, as compared with any hit-and-miss polling mechanisms. For some other platform families whose hardware does not support trigger-based detection, the polling LANZ-lite alternative is available, still very useful but simply not as accurate. Refer to the manual for LANZ differences.   LANZ generated...
Continue reading →

Data Analyzer (DANZ) Glossary

Access List (ACL) The switch configuration used for the purpose of filtering Layer 2, Layer 3, or Layer 4 traffic. See Filtering with Port ACLs Advanced Mirroring An Arista feature set which includes support for filtered, multi-destination mirroring, mirroring to EOS of data plane traffic, advanced load-sharing, and packet truncation.   Aggregation Group A configuration or grouping of Tap and Tool ports together where traffic from all Tap ports in a group will be replicated to all Tool ports in the same group.  A tool port can be a member of multiple aggregation groups whereas a tap port is allowed...
Continue reading →

Follow

Get every new post on this blog delivered to your Inbox.

Join other followers: