We must point out that basic knowledge of the cisco nxos is recommended for. Cisco nx os software vpcs and cisco catalyst virtual switching systems vss are similar technologies. Jan 05, 2015 cisco nexus vpc virtual port channel and the nexus platform. To use vpc object tracking, track both peerlink interfaces and l3 core. Weve been working with the nexus 5ks a good bit lately and they are just cool, no two ways about it. 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. Data center aggregation layer design and configuration with cisco nexus switches and virtual portchannels. Are we loss vpc peer link between both nexus 7 k please provide suggesti. 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. It offers a pragmatic discussion of common features, deployment models, and field practices for. Cisco nxos also checks a number of operational attributes for an interface before allowing that interface to participate in the portchannel aggregation.
Cisco nexus 5600 series nx os virtual port channel command reference. The third device can be a switch, a server, or any other networking device that supports ieee 802. Ip multicast, volume ii thoroughly covers advanced ip multicast designs and protocols specific to cisco routers and switches. One really nice feature that the nexus 5000 and 7000 support is vpc, or virtual portchannels. The vulnerability is due to a lack of proper fcoe frame padding validation. Introduction to cisco nx os 5 supports native fibre channel, ethernet, and fcoe interface for a total of 48 interfaces.
Cisco nexus 5000 series nxos software configuration guide. We are using mgmt interface of supervisors as a peer keep alive interface, so what happen when this keep alive gets down. For cisco etherchannel technology, the term multichassis etherchannel mcec refers to either technology interchangeably. The virtual port channel vpc peer switch feature addresses performance. 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.
Cisco fabric extender technology ataglance pdf 3 kb. In fact, 11040g ethernet switches offer the highest performance and extensibility to 100ge switching and lowest costper port. 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. Nx os is a network operating system for the nexusseries ethernet switches and mdsseries fibre channel storage area network switches made by cisco systems. 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. 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. It is a special link for carrying l2 traffic between the vpc peer switches when there is a. Cisco nexus 9000 design and configuration cisco training. 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. Cisco nxos software vpcs and cisco catalyst virtual switching systems vss are similar technologies. At l2, the switches behave like one switch, while retaining their distinct identities, unlike the cisco vss technique.
Newest cisconxos questions network engineering stack. An attacker would need valid administrator credentials to perform this exploit. Data center access design with cisco nexus 5000 series switches. A nonvpc port, also known as an orphaned port, is a port that is not part of a vpc. It evolved from the cisco operating system san os, originally developed for its mds switches. Fundamental design concepts nexus vpc layer 3 and peergateway enhancement. Figure 4 shows different types ports connected to a vpc system. The implementing and operating cisco data center core technologies dccor v1. Difference between port channel and vpc cisco community. Data center access design with cisco nexus 5000 series. 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 nxos and virtual device contexts vdcs it tips for. In this course, you will learn about the nextgeneration cisco nexus 9000 series switches, which are highly programmable and high density.
As shown below, they do this by enabling a device to create an etherchannel to two nexus switches at one time. An attacker could exploit this vulnerability by sending a stream of. 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. Data center design with cisco nexus switches and virtual. Introduction to nxos configuration fundamentals youtube. Hi, we setup two n7k as core switches in our network. 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. The ports that form the virtual portchannel are split between the vpc peers and are referred to as vpc member ports. To clear the boot variable, use the no form of this command. Figure 5 shows devices that are connected to the vpc peer cisco nexus 5000 series switches 5k01 and 5k02 with a portchannel a vpc.
Virtual portchannel fundamental concepts for an indepth discussion of vpc design choices, and to spanning. In this course, you will master the skills and technologies you need to implement data center compute, lan and san infrastructure. In addition, virtual port channel was introduced in nxos version 4. 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. Recently, we upgraded our core network with cisco nexus switches, including a vpc virtual port channel setup and 10ge. 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 toe is comprised of the nexus 5600 series switches which include the 5600 models. Cisco nxos system software cli command injection vulnerability. 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. If some portions of this document arent clear, we suggest that you refer to chapter 3, cisco nx os software virtual portchannel. 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. 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.
Cisco nxos software fibre channel over ethernet denial of. This means that the keepalive could be a single link between normal ports over a custom vrf. It is based on wind river linux and is interoperable with other cisco operating systems. Cisco nxosios configuration fundamentals comparison pete. Configuring cisco nexus 5000 series switches dcnx5k v3. Cisco nx os finds its roots in the cisco san os operating system used worldwide in businesscritical lossintolerant san networks. Application control software commandline interface 870. 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. Nextgeneration data center architectures, by kevin corbin, ron fuller, and david jansen. Nexus 2000 series fabric extender, and the nx os software. Welcher over at the netcraftsmen blog i suggest reading.
Server 6 connects to a cisco nexus switch with an activestandby teaming configuration. Virtual port channels vpcs overlay transport virtualization otv. Access it certification study tools, ccna practice tests, it salaries, and find it jobs. Configuration version management, batches, and scripts 866. Cisco nexus vpc virtual portchannel and the nexus platform. The vulnerability is due to insufficient input validation of command arguments. Cisco nexus 3548 switch nxos fundamentals command reference. The third device can be a switch, server, or any other networking device. For more about spanning tree protocol, see chapter 4, spanning tree design. 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. This chapter assumes that the reader is familiar with virtual portchannel vpc technology. The nx os software architecture cisco nx os architecture, key features, and capabilities. An attacker could exploit this vulnerability by injecting crafted command arguments into a.
Data center aggregation layer design and configuration. We dont support running routing protocols over vpc enabled vlans. Virtual portchannel quick configuration guide cisco. From the connected devices perspective, it is still connected to a single switch. 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. 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. Jan 08, 2014 cisco nxos software virtual portchannel. Cisco nexus 9000 series nxos high availability and redundancy guide cisco nexus 9000 series switches cisco nxos licensing guide cisco nxos software virtual portchannel. Nxos configuration fundamentals livelessons contains individual video lessons, divided into 94 sublessons, for a total of nearly 12 hours of instruction. Spanning tree design guidelines for cisco nxos software and. Based on the industryproven cisco mds 9000 sanos software, cisco nxos helps ensure continuous availability and sets the standard for missioncritical data center environments. Layer 2 support and configurations overview of damn small linux.
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. They are one method of addressing the limitations of spanningtree and etherchannel. Nxos software virtual port channel guide manoj shukla. Best practices for virtual port channels vpc on cisco nexus 7000 series switches. Get valuable it training resources for all cisco certifications. A vulnerability in the cli of cisco nx os system software could allow an authenticated, local attacker to perform a command injection attack. Configuring cisco nexus 5000 series switches cisco training. A vpc port is a port that is assigned to a vpc channel group.
Virtual port channels can be used to connect nexus 2000s to nexus 5000s or to. Oct 03, 2018 virtual port channels, or vpcs, are an extension to etherchannels. Im bringing up a new pair of nexus 5500s running nx os 5. Mar 08, 2018 design, operate, and troubleshoot advanced cisco ip multicast in enterprise, data center, and service provider networks. 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. It also does not need a group of links in a portchannel. 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. Cisco nexus 5600 series switch with 2000 series fabric. Designs are targeted for aggregationaccess layer and also for datacentre interconnect. Cisco nexus 5000 series switches design guides cisco.