Im bringing up a new pair of nexus 5500s running nx os 5. Layer 2 support and configurations overview of damn small linux. Nexus 2000 series fabric extender, and the nx os software. Virtual portchannel quick configuration guide cisco.
Cisco nexus 5000 series switches design guides cisco. They are one method of addressing the limitations of spanningtree and etherchannel. When you associate an interface with a channel group, cisco nx os creates a matching port channel automatically if the port channel does not already exist. Data center access design with cisco nexus 5000 series switches. Weve been working with the nexus 5ks a good bit lately and they are just cool, no two ways about it. For cisco etherchannel technology, the term multichassis etherchannel mcec refers to either technology interchangeably. Fundamental concepts chapter 3 spanning tree design guidelines for cisco nx os software and virtual portchannels chapter 4 data center aggregation layer design and configuration with cisco nexus switches and virtual. Cisco nexus 5000 series nxos software configuration guide. May 15, 2015 nx os configuration fundamentals livelessons contains individual video lessons, divided into 94 sublessons, for a total of nearly 12 hours of instruction. Data center access design with cisco nexus 5000 series. Feb 15, 2016 cisco nxos and virtual device contexts vdcs skminhaj uncategorized february 15, 2016 4 minutes the following content is taken from the cisco press book nxos and cisco nexus switching. Nextgeneration data center architectures, by kevin corbin, ron fuller, and david jansen.
The document is for nexus 5000, but the failure scenario is discussed in the vpc peerlink failure section of the cisco nx os software virtual portchannel. Cisco nexus 3548 switch nx os fundamentals command reference ol2784501 chapter basic system commands boot boot to configure the boot variable for the cisco nexus 3548 kickstart or system software image, use the boot command. From the connected devices perspective, it is still connected to a single switch. Virtual portchannels vpcs allow links that are physically connected to two different cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. We must point out that basic knowledge of the cisco nxos is recommended for. Cisco nexus 9000 design and configuration cisco training. Introduction to nxos configuration fundamentals youtube. The vulnerability is due to a lack of proper fcoe frame padding validation. Recently, we upgraded our core network with cisco nexus switches, including a vpc virtual port channel setup and 10ge. Figure 5 shows devices that are connected to the vpc peer cisco nexus 5000 series switches 5k01 and 5k02 with a portchannel a vpc. Cisco nexus 5600 series switch with 2000 series fabric. Based on the industryproven cisco mds 9000 sanos software, cisco nxos helps ensure continuous availability and sets the standard for missioncritical data center environments. It is a special link for carrying l2 traffic between the vpc peer switches when there is a.
Data center aggregation layer design and configuration. A vulnerability in the cli of cisco nx os system software could allow an authenticated, local attacker to perform a command injection attack. Best practices for virtual port channels vpc on cisco nexus 7000 series switches. In addition, virtual port channel was introduced in nxos version 4. Cisco fabric extender technology ataglance pdf 3 kb. When you add an interface to a channel group, cisco nx os checks certain interface attributes to ensure that the interface is compatible with the channel group. If the cisco nexus 5500 platform is used in conjunction with the layer 3 engine, at the time of this writing cisco nx os 5. A virtual port channel vpc allows links that are physically connected to two different cisco nexus 5000 series switches or cisco nexus 2000 series fabric extender s to appear as a single port channel by a third device see the following figure. A vulnerability in the fibre channel over ethernet fcoe protocol implementation in cisco nx os software could allow an unauthenticated, adjacent attacker to cause a denial of service dos condition when an fcoerelated process unexpectedly reloads. If some portions of this document arent clear, we suggest that you refer to chapter 3, cisco nx os software virtual portchannel. Cisco nxos and virtual device contexts vdcs it tips for. The basic topics cover the content on 8gbps fibre channel, 16gbps fibre channel, fibre channel over ip fcip, multihop fcoe, upgrading the cisco nx os, and the simple handling tool cisco prime data center network manager dcnm. Spanning tree design guidelines for cisco nxos software and. In fact, 11040g ethernet switches offer the highest performance and extensibility to 100ge switching and lowest costper port.
Server 6 connects to a cisco nexus switch with an activestandby teaming configuration. Oct 03, 2018 virtual port channels, or vpcs, are an extension to etherchannels. Mar 08, 2018 design, operate, and troubleshoot advanced cisco ip multicast in enterprise, data center, and service provider networks. Data center aggregation layer design and configuration with cisco nexus switches and virtual portchannels. An attacker could exploit this vulnerability by sending a stream of. Ip multicast, volume ii thoroughly covers advanced ip multicast designs and protocols specific to cisco routers and switches. It evolved from the cisco operating system san os, originally developed for its mds switches. Cisco nexus 5600 series nx os virtual port channel command reference. Welcher over at the netcraftsmen blog i suggest reading. Cisco nxosios configuration fundamentals comparison pete. Cisco nx os finds its roots in the cisco san os operating system used worldwide in businesscritical lossintolerant san networks. To clear the boot variable, use the no form of this command. Configuration version management, batches, and scripts 866.
Cisco nxos also checks a number of operational attributes for an interface before allowing that interface to participate in the portchannel aggregation. The nx os software architecture cisco nx os architecture, key features, and capabilities. Figure 4 shows different types ports connected to a vpc system. It is based on wind river linux and is interoperable with other cisco operating systems. In this course, you will learn about the nextgeneration cisco nexus 9000 series switches, which are highly programmable and high density. Jan 05, 2015 cisco nexus vpc virtual port channel and the nexus platform. Get valuable it training resources for all cisco certifications. In this course, you will master the skills and technologies you need to implement data center compute, lan and san infrastructure. Nx os is a network operating system for the nexusseries ethernet switches and mdsseries fibre channel storage area network switches made by cisco systems. It offers a pragmatic discussion of common features, deployment models, and field practices for. This means that the keepalive could be a single link between normal ports over a custom vrf. Difference between port channel and vpc cisco community.
Cisco nxos software fibre channel over ethernet denial of. It also does not need a group of links in a portchannel. The consultant in charge of the migration did not recommend to attach our esxi servers via vpc or said that this is only possible with vds. Access it certification study tools, ccna practice tests, it salaries, and find it jobs. An attacker would need valid administrator credentials to perform this exploit. Cisco nx os software vpcs and cisco catalyst virtual switching systems vss are similar technologies.
Newest cisconxos questions network engineering stack. Nxos configuration fundamentals livelessons contains individual video lessons, divided into 94 sublessons, for a total of nearly 12 hours of instruction. The toe is comprised of the nexus 5600 series switches which include the 5600 models. Nxos software virtual port channel guide manoj shukla. Hi, we setup two n7k as core switches in our network. Are we loss vpc peer link between both nexus 7 k please provide suggesti. Configuring cisco nexus 5000 series switches dcnx5k v3. Cisco nx os is a highlyevolved modular operating system that builds on more than 15 years of innovation and experience in highperformance switching and routing. The virtual port channel vpc peer switch feature addresses performance. Data center design with cisco nexus switches and virtual.
Virtual port channels vpcs overlay transport virtualization otv. Virtual portchannel fundamental concepts for an indepth discussion of vpc design choices, and to spanning. An attacker could exploit this vulnerability by injecting crafted command arguments into a. Introduction to cisco nx os 5 supports native fibre channel, ethernet, and fcoe interface for a total of 48 interfaces. Virtual port channels can be used to connect nexus 2000s to nexus 5000s or to. The ports that form the virtual portchannel are split between the vpc peers and are referred to as vpc member ports.
Based on the industryproven cisco mds 9000 san os software, cisco nx os helps ensure continuous availability and sets the standard for missioncritical data center environments. At l2, the switches behave like one switch, while retaining their distinct identities, unlike the cisco vss technique. We dont support running routing protocols over vpc enabled vlans. Design guide figure 4 illustrates another vpc topology consisting of cisco nexus 5000 series switches and cisco nexus 2000 series fabric extenders in straightthrough modethat is, each fabric extender is singleattached to a cisco nexus.
The vulnerability is due to insufficient input validation of command arguments. Virtual device contexts vdcs in the nexus 7000 switches configuring layer 2 switching features configuring nexus fabric extenders fex port channels and virtual port channels vpcs fabricpath. The cisco nexus 5600 series switch with 2000 series fabric extenders toe are data center switches that support 10 gigabit ethernet on all ports while maintaining consistent low latency. One really nice feature that the nexus 5000 and 7000 support is vpc, or virtual portchannels. Virtual port channel vpc ties two nexus 7k or 5k switches together by doing a great job of spoofing layer 2 l2, including stp bpdu spanning tree hellos and fhrp first hop routing protocol hsrp, vrrp, glbp behavior. The implementing and operating cisco data center core technologies dccor v1. As shown below, they do this by enabling a device to create an etherchannel to two nexus switches at one time. This chapter assumes that the reader is familiar with virtual portchannel vpc technology. The third device can be a switch, server, or any other networking device. Application control software commandline interface 870. The document is for nexus 5000, but the failure scenario is discussed in the vpc peerlink failure section of the cisco nxos software virtual portchannel. A nonvpc port, also known as an orphaned port, is a port that is not part of a vpc. Cisco nxos software vpcs and cisco catalyst virtual switching systems vss are similar technologies.
For more about spanning tree protocol, see chapter 4, spanning tree design. A vpc port is a port that is assigned to a vpc channel group. Designs are targeted for aggregationaccess layer and also for datacentre interconnect. To use vpc object tracking, track both peerlink interfaces and l3 core. Cisco nexus 9000 series nxos high availability and redundancy guide cisco nexus 9000 series switches cisco nxos licensing guide cisco nxos software virtual portchannel. The third device can be a switch, a server, or any other networking device that supports ieee 802. We are using mgmt interface of supervisors as a peer keep alive interface, so what happen when this keep alive gets down. In this instance, cisco nx os creates an empty channel group with the same channel number as the port channel and takes the default configuration. Unified ports on the nexus 5500 platforms enable an interface to have one of the following characteristics depending on the licensing and pluggable transceiver installed. Jan 08, 2014 cisco nxos software virtual portchannel. Configuring cisco nexus 5000 series switches cisco training. Cisco nexus 3548 switch nxos fundamentals command reference. Cisco nxos system software cli command injection vulnerability. Cisco nexus vpc virtual portchannel and the nexus platform.
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