Jan, 2015 this is my experience of upgrading nexus 7000 series switches without disturbing the existing traffic. Once a udld packet is received, the switch echoes the peer switchid and portid back to the peer. Migrating to nexus 7000 from catalyst 6500 and 4500 switches. But avoid asking for help, clarification, or responding to other answers. Still takes 46 minutes, but automatically zips file reducing size 2. Cisco smart install is a transparent plug and play technology to configure the cisco ios software image and switch configuration without user intervention. In a nexus 7000 series chassis with dual supervisors, you can use the inservice software upgrade issu feature to upgrade. Layer 2 support and configurations overview of damn small linux.
Nxos does not support all the features of ios, for example, acting as a dhcp server and ntp authentication. Udld disabled interface ethernet79, neighbor mismatch detected conditions. They support both forward and reverse airflow portside exhaust and portside. What minimum software release do i need to support sup2 or sup2e. May 29, 2018 the cisco nexus 7000 series device periodically transmits udld frames to neighbor devices on lan ports with udld enabled. Smart software licensing for cisco nexus 7000 series switches. It is not hardware offloaded down to individual line cards. The problem is that during issusso the stp bpdus can get dropped if you have lots of vlansstp instances and the end result is that the trunks get blocked in the data plane, and then traffic is temporarily blackholed. Udld aggressive mode sees no bidirectional udld communication as a problem and will proactively disable the port. Cisco cisco nexus 5000 converged network switches manuals. The nexus 7000 series of switches implements store and. This compact onerackunit 1ru form factor 1 and 10 gigabit ethernet switch provides linerate layer 2 and 3 switching. Toe hardware models 7000, 7700 toe software version nxos version 6.
About the unidirectional link detection parameter default udld configuration udld aggressive and nonaggressive modes about interface speed about the cisco discovery protocol default cdp configuration about the errordisabled state about port profiles cisco nexus 3000 series nxos layer 2 switching configuration guide, release 5. The ports exchange udld packets during the udld detection process, to include the originator switchid and the originator portid. Everything you wanted to know about data center design but did not know who to ask duration. Cisco nexus 7000 series nxos interfaces configuration guide. For that reason, you never want to enable udld aggressive on a layer 1 segment with multiple udld neighbors, a single missing device will cause all udld aggressive neighbors to go down. The purpose of this document is not to teach the user basic cisco commands or the fundamentals of iosnxos. This is an older version of my command summary, the updated version is available at migrating to nexus 7000 from catalyst 6500 and 4500 switches as of nxos 6. The cisco nexus 7000 series device periodically transmits udld frames to neighbor devices on lan ports with udld enabled. This is my experience of upgrading nexus 7000 series switches without disturbing the existing traffic. The cisco nexus 7000 series is powered by the proven cisco nxos software operating system, with enhanced features to deliver realtime system upgrades. Cisco nexus 32q and 32qx switches product overview the cisco nexus 32q and 32qx switches are dense, highperformance, layer 2 and 3 40gbps switches. Cisco intelligent traffic director itd is an innovative solution to bridge the performance gap between a multiterabit switch and gigabit servers and appliances. Typically used for copperbased mediums such as twisted pair.
The cisco nexus 3048, with its compact onerackunit 1ru form factor and integrated layer 2 and 3 switching, complements the existing cisco nexus family of switches. On the software side, nx oss modular design differs from ciscos venerable and monolithic ios. Cisco builds on its data center leadership and innovation with the introduction of the new cisco nexus family of products and additions to its cisco catalyst series. This is an updated course that includes coverage of new features introduced in cisco nxos 6. Failures, loss of bidirectional connectivity udld in aggressive mode can also.
Nexus 7000 7700 architecture and design flexibility for. I also found out that udld puts the port in the errdisable get more information this subreddit allows. If the frames are echoed back within a specific time frame and they lack a specific acknowledgment echo, the link is flagged as unidirectional and the lan port is shut down. The information in this document is based on these software and hardware versions. When you go through table 15, you might wonder how the switching capacity was calculated. I i have a 6500 with a gig sfp lh mod connected to a 3750 with the same sfp. Cisco 7600 series router cisco ios software configuration. Cisco nexus 7000 series nxos release notes, release 6. Figure 118 cisco nexus 7000 and nexus 7700 product families note.
Following is a list of hardware and software required for a typical nexus 7000. The session also discusses some of the data center design examples. I decided to refresh my earlier article on migrating to nexus 7000 from catalyst 6500 and 4500 switches with some 5. Unidirectional link detection udld error messages on a cisco nexus 7000 series switch.
Cisco nexus 7000 series nxos fundamentals command reference. Cisco nexus 7000 series nxos layer 2 switching configuration guide, release 4. Nexus 7000 test plan vpc v1 free download as word doc. Cisco nexus 7000 m2series 2port 100 gigabit ethernet module. When cisco launched the insieme product line last fall, it said it had an aggressive migration program on tap for customers of its 15yearold catalyst 6500 to the new nexus 9000 data center. Smart install utilizes dynamic ip address allocation and the assistance of other switches to facilitate installation providing transparent network plug and play. I had to completely disable udld to get the interface active again. The cisco nexus family was developed to meet customer demands for more efficient and sustainable nextgeneration data centers. Cisco catalyst 3750x series switches date sheet cisco 3750x. The cisco nexus 3048 switch figure 1 is a linerate gigabit ethernet topofrack tor switch and is part of the cisco nexus 3000 series switches portfolio. I enabled udld aggressive mode on bot ends and they both reported seeing each other as neighbors.
Sep 02, 2008 on the software side, nx oss modular design differs from ciscos venerable and monolithic ios. Although the nexus 5000 had some modular capabilities and you can attach the nexus 2000 fabric extender to the 5500 range, the nexus 7000 is the real modular switch in the nexus family with six versions. Nexus 7000 test plan vpc v1 internet standards networking. Cisco nexus 7000 series nxos cli management best practices guide. The cisco nexus 32q, 32qx, and 32qxl come in a compact onerackunit 1ru form factor and run the industryleading cisco nxos software operating system, providing customers with comprehensive features and functions that are widely deployed. The issue is triggered by a portchannel flap leading to a race condition in udld.
Cisco nxos licensing guide smart software licensing for. With the linuxbased nx os, each layer2 and layer3 protocol runs as a separate process. Cisco nexus 32q, 32qx, and 32qxl switches data sheet. The configuring cisco nexus 7000 switches dcnx7k v3. Same behavior as in normal mode, but udld also sets the port to the. Ive also added some additional commands that i felt may be useful, such as the bgp commands. View online or download cisco cisco nexus 5000 converged network switches manual, release note. Cisco nexus 7000 series nxos interfaces configuration. Configuring the cisco nexus 7000 dcnx7k authorized cisco. Advanced troubleshooting nexus 7000 series switches. Cisco catalyst 3560e series is figure 1 an enterpriseclass line of standalone access and aggregation switches that facilitate the deployment of secure converged applications while maximizing investment protection for evolving network and application requirements.
The session starts with a brief introduction to the nexus 7000 hardware components. Once the switches exchange echo packets, a bidirectional relationship is formed. Cisco nexus 3064 switch product overview the cisco nexus 3064 switch figure 1 is a highperformance, highdensity, ultralowlatency ethernet switch that is part of the new cisco nexus 3000 series switches. Troubleshoot unidirectional link detection errors on. Nexus 7000 training scope and purpose the scope and purpose of this document is to familiarize the user with the cisco nexus 7010 platform that is going to be deployed in any city,usa. To provide an understanding of the nexus 7000 nexus 7700 switching architecture, which provides the foundation for flexible, scalable data centre designs to examine key nexus 7000 nexus 7700 design building blocks and illustrate common design alternatives leveraging those features and functionalities. Cisco cisco nexus 5000 converged network switches pdf user manuals. Cisco nexus 7000 f3series 12port 40 gigabit ethernet module.
So i thought that if i disconnected one of the fibers that the udld. The cisco nexus 7000 f3series module figure 1 is a lowlatency, highperformance, highdensity 40 gigabit ethernet module. Cisco nexus 3000 series configuration manual pdf download. Hello, i was hoping someone could help me figure out an uplink issue. Cisco nxos software for cisco nexus 7000 series switches data. I found information on a nexus 7k best practices guide which states. Figure 118 shows these switching models, and table 15 shows their specifications. To configure the interfaces for aggressive unidirectional link detection udld mode, use the udld aggressive command. It is not hardware offloaded down to indidividual line cards.
Cisco nexus 7000 series nxos fundamentals command reference, release 5. Best practices for issu inservice software upgrade with vpc. It used to be recommended to run ba basically everywhere between nexus boxes, but ba can break both issu and supervisor switchover sso. Thanks for contributing an answer to network engineering stack exchange. If the frames are echoed back within a specific time frame and they lack a specific acknowledgment echo, the link is flagged as. The session starts with a nexus 7000 overview and then primarily focuses on data center features and implementation best practices. In a nexus 7000 series chassis with dual supervisors, you can use the inservice software upgrade issu feature to upgrade the system software while the system continues to forward traffic. Cisco nexus 7000 series nxos interfaces command reference, release 5. I have a nexus 3524 at the core of the network running 6. To my knowledge, you simply cant run udld across a fexfabric port theres even a bug, cscub14112, related to the fact that the udld config wasnt being removed from fexfabric ports in certain conditions on the 5ks, though there may be a similar feature embedded in the proprietary control protocol cisco uses between the 5k and a fex. Troubleshoot unidirectional link detection errors on nexus. Nexus 7000 and nexus 7700 have multiple models with different specifications. Udld empty echo and then shutno shut the port, ports go up and things work fine. The s to certain works contained in this software are owned by other third.
When i connect a catalyst 2960x via sfp10gsr or lr fiber connection i get the following issue on the nexus side. Udld is processed directly by the nexus 7000 supervisor cpu. Design layer 2 hampir selalu membahas stp, trunk, udld, etherchannel, dan vss. In case the cpu gets overloaded, udld messages may not be processed or sent, which can lead to an errordisable situation if udld is set to aggressive mode. Cisco nexus 7000 series nxos interfaces command reference. Design troubleshooting best practices educational vs fail close. The focus of the presentation is on implementation and best practices. Remote integrated service engine rise is a new protocol being added to the nexus 7000 and 7700 platforms through nxos software upgradeable to existing devices, that integrates service appliances to be attached to nexus 7000 series switches with the same benefits as if the appliance was directly connected to the switch backplane, as if it. Apr 22, 2015 the ports exchange udld packets during the udld detection process, to include the originator switchid and the originator portid.
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