Then i updated nxos on one nexus switch and when the switch came back up, it took down both nexus 2ks at the same time to upgrade the software on it. If configuring peerswitch vpc vlans priority on both switch must be the same. Cisco catalyst 6500 vss and cisco nexus 7000 vpc interoperability and best practices white paper vss vpc interoperability sample configuration following is an illustration. Nexus vpc seems like a perfect solution for real multichassis etherchannel.
Overview the configuring cisco nexus 7000 switches dcnx7k v3. Catalyst vss technology cisco forum faq dslreports, isp. As soon as this above event happened, another event happened which causes primary nexus goes down. Autorecovery will not trigger on secondary vpc peer conditions.
In the previous articles we covered the main components, features and best practices implemented for the nxos vpc data center technology. The document defines the steps needed to migrate a virtual portchannel vpc peer link from the nexus 7000 f1 module to the m1 module. Troubleshooting cisco nexus switches and nxos book, 2018. Ciscos virtual port channel vpc technology is developed for cisco nxos software for cisco nexus switches like nexus 7000, nexus 5000 with or without fabric extender nexus 2000, etc. Introduction vpc autorecovery feature in nexus 7000. Cisco vpc best practices and failure scenarios knowledge. In the first part i covered how to configure vpc on the nexus 7000, here i will cover what it takes to get a remote switch to uplink to the nexus 7000 core switches using vpcmultichassis etherchannel. Enabled timeout 240 seconds if this is not set as enabled trust me, set it as enabled.
At work were using it extensively on a few pairs of nexus 7000s. This course covers the key components and procedures you need to know to install, configure, manage, and troubleshoot the cisco nexus 7000 switch platform. In previous versions of nxos when when nexus switch would come online after a power outage lets say the secondary in the vpc and the primary never comes back up. It is not possible to configure vpc on a pair of switches consisting of a nexus 7000 series and a nexus 5000 series switch. Michel sent me a detailed email describing both his enthusiasm with vpc and the headaches consistency checker is causing him. In this explanation it says one of the reasons for autorecovery is. Since the other nexus 7000 is still off, the vpc peerlink and the vpc peerkeepalive link are also off. This is the third and final article from the cisco nexus virtual port channel vpc virtualization technology and indeni series. Introduce nxos software architecture and logging capability. This is the second part in a two part post on etherchannel on the nexus 7000. This scenario might occur when the f1 module needs to be upgraded for scalability or other reasons. Two nexus 7000 switches in vpc with autorecovery configured. Cisco content hub cisco nexus 7000 series switches. Vpc belongs to multichassis etherchannel mcec family of.
The third switch can be a cisco nexus 2000 series fabric extender or a switch, server, or any other networking device. Cisco nexus 7000 series nxos interfaces configuration. Configure autorecovery autorecovery reloaddelay time. A vpc allows links that are physically connected to two different cisco nexus 5000 series switches to appear as a single port channel to a third switch. All vpc configurations have to be removed from the portchannel on that nexus 7000 to cause the portchannel to work. A power outage shuts off both nexus 7000 vpc peers simultaneously and only one switch is able to come on.
In a previous post i briefly described the benefits of virtual portchannel vpc and discussed design options for the. There were two main reasons for this vpc enhancement. Why do we need vpc autorecovery there were two main reasons for this vpc enhancement. The only thing dualhoming a fex will gain is the ability to make a device with a single nic survive the failure of a single parent nexus. With reload restore the secondary nexus switch will assume the primary role for stp and lacp functions. Cisco nxos software vpcs and cisco catalystvirtual switching systems vss are of similar technologies. Nexus 7000 vpc autorecovery feature configuration example. Configuring cisco nexus 7000 series switches dcnx7k v3. Cisco strongly recommends that you enable this feature to help. This is used when both vpc peers are rebooted, so that the secondary does not wait forever for the primary to come up before assuming it. When building data center networks using cisco nexus switches you can choose to attach the nexus 2000 fabric extender fex to a nexus 5000 or 7000 depending on your design requirements and budget. After you create a vpc domain, the cisco nxos software. Here is a diagram depicting the layout that we are using.
The assumption is that vpc autorecovery is configured and saved to the startup configuration on both switches s1 and s2. At this time being, vpc is implemented on cisco nexus 9000, 7000, 5000 and 3000 series platforms with or without cisco nexus 2000 series fabric extenders. Nexus 7000 series 190 pages switch cisco nexus 6000 series configuration manual. Cisco nexus 5000 series vpc design and configuration. What ive found on my tablet that to get from step 4 to step 5, i need to press the power button then press and release the volume up button and finally release the power button. The modular cisco nexus 7000 and 7700 switches deliver a comprehensive cisco nxos feature set and opensource programmable tools for software defined networking sdn deployments. The vpc peers must run the same nxos version except during the nondisruptive upgrade, that is, inservice software upgrade issu. Page 6 creating a vpc peer link checking the configuration compatibility enabling vpc autorecovery configuring the restore time delay excluding vlan interfaces from shutting down a vpc peer link. They offer highdensity 10, 40, and 100 gigabit ethernet with application awareness and performance analytics. The default time delay is 360 seconds 6 min to wait for the primary to come back online. The first step in configuring vpc is to create a domain with an id number must match on both switches and assign a nonpreemptive role priority to each switch where lowest number highest priority.
In nexus 7000 what is use of vpc auto recovery feature. Cisco nexus 3548 configuration manual pdf download. The configuring cisco nexus 7000 switches dcnx7k v3. Configuring cisco nexus 7000 switches techsherpas 365. View and download cisco nexus 7000 series configuration manual online. A vpc peer may wait a long time for its peer after a dual reboot. Cisco nexus 7k design with activeactive fex egroup. In this scenario, the vpc does not come on even for the nexus 7000 which is already on. Since the other nexus 7000 is still down, vpc peerlink as well as vpc peerkeepalive link are also down. I have this scenario and trying to configure vpc for cisco asa 5585 activestandby nexus vpc config. I thought configuring auto recovery would bring the member ports up after 240sec delay but the ports never come up.
In this scenario, vpc will not come up even for the nexus 7000 which is already up. How to boot into recovery mode nexus 7 rob schmuecker. A vpc deployment with a single cisco nexus 7000 series m2xp12 module or m108xp12 module, where the l3 core uplinks and vpc peerlink interfaces are localized on the same module, is vulnerable to access layer isolation if the 10gbps module fails on the primary vpc vpc member ports are defined on both 1gbps line cards and on 10gbps line. This course covers the key components and procedures you need to know to configure, manage, and troubleshoot the cisco nexus 7000 series switch. This course is designed for systems and field engineers who configure the cisco nexus 7000 switch. If there is a data center outage or power outage, both vpc peers consisting of nexus 7000 switches are down. In a data center outage or power outage, both vpc peers comprising of nexus 7000 switches are down. Lacp configuration and multichassis etherchannel on nexus. The activeactive design allows us to connect serversstoragedevices to a single fex, and utilize the fexs portchannels to each parent switch to provide redundancy. This logical link can be used to forward traffic by using a. You must save this setting in the startup configuration.
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