For example, the output shown above indicates that the STP mode is configured differently on two Cisco Nexus 5596 devices. These interfaces should be connected to a 3rd switch in the same vlan. BLK is a blocked port state BRK is a BROKEN port state. Dec 6, 2011 · Disabling vPC peer link compatibility check. Troubleshooting Virtual Port Channel Issues. Type-2 will generate a syslog warning message informing what might be wrong with vPC. Dec 13, 2015 · 問題の概要 NexusシリーズでvPCが構成されている環境で、vPC auto-recoveryが有効である場合、交換方法によっては、vPCのlink downが発生し、通信断が発生する可能性があります。 Nexus7000では、NXOS6. vPC performs a Type 2 consistency check for VTP configuration parameters. in fact, you cant. In the interface consistency parameters shown in the above output, all configurations except the Allowed VLANs are considered as Type 1 consistency Sep 2, 2017 · Below is the configuration output: Nexus5K-1 (config-if)# show vpc. 3. ee69. vPC role : secondary. Name Type Local Value Peer Value. 1x routed port p2p connection in a vrf for peer-keep-alive link ( not to traverse the peer-link) 1x routed port p2p connection for routing backup path between vpc Apr 26, 2022 · graceful consistency-check 1. Dec 13, 2019 · sh vpc consistency-check global sh vpc consistency-check vpc xx As for the physical connectivity, you'll need at a minimum of 4 ports for a valid vpc domain creation. 04-12-2018 09:55 AM. Number of vPCs configured : 2. how l2protocol tunnel summary 1. hsrp bfd 1. It seems like 5k2 hasn't performed a consistency check but 5k1 has and it shows successful. 1 source 192. 168. Consistency Counts: Looking at the Consistency Checks. vPC domain id : 500 Peer status : peer link is down vPC keep-alive status : Suspended (Destination IP not reachable) Configuration consistency status: success vPC Apr 19, 2018 · nexus-10. Configuration inconsistency reason: vPC type-1 configuration incompatible - STP. There is mismatch between the vpc parameters of local and peer. 08-30-2016 08:21 AM. Each vpc switch. qasim khan. Oct 6, 2018. Jun 20, 2013 · Since there are no peers, the consistency check is bypassed. Inhave just rebooted a pair of 9300 switches and now its showing type 2 inconsistency check not performed. hardware access-list tcam region nat 1. Cisco Nexus 7000 Series NX-OS Troubleshooting Guide Oct 18, 2018 · Peer status : peer adjacency formed ok. Configuration consistency status : success . (timeout = 240s) Demystifying OSPF on a vPC. Jul 3, 2023 · Regarding the VPC keep-alive link, it is recommended to have a separate link or links dedicated solely for VPC keep-alive traffic. Jul 7, 2014 · New Type 2 Consistency Check on the vPC Port-Channels. To enable simultaneous use of these parallel links, STP priority adjustments were required and load balancing was done on per-VLAN or per-MST vPC Consistency Checks You can use the show vpc command also shows the vPC consiste ncy check result for each vPC and the reason for the consistency check failure. Each Aug 25, 2018 · Peer status : peer adjacency formed ok. Mar 21, 2013 · Due to the consistency check, the configuration made on one vPC switch could potentially lead to consistency check failure and traffic disruption. It is probably due to you have not configured any type-2 consistency check related features on your devices that would triggers the type-2 inconsistency check to perform. vPC keep-alive status : peer is alive. vpc domain 1. Configuration consistency status: success. For eg: S1 is powered off. Aug 30, 2016 · Furose M. Apr 2, 2018 · >如果配置了 VPC，需要查看 VPC 是否正常，peer-link 是否 up，VPC 两端配置是否一致。show vpc, show vpc consistency-check > ##举个栗子 n7k e1/30 & e2/30 在 port-channel 100, e1/30可以和对端正常协商为 port-channel，up；但是 e2/30 没有办法 up Nov 13, 2016 · vPC Object Tracking is used in a scenario such as this. vPC role : primary. 7. 731a (bia 547f. Failure scenarious Mar 6, 2019 · Legend: (*) - local vPC is down, forwarding via vPC peer-link. Wow! That was a lot, just out of one command! The other big vPC-specific command is sh vpc consistency-parameters. 3/24. Nov 25, 2018 · Consistency check failed due to two reasons. vPC Type-2 consistency chexk not performed. This state doesn’t officially exist per the IEEE, but cisco created this state when there is a port inconsistency that causes problems with the VPC. Nov 17, 2015 · If the vPC member ports on the primary switch flaps afterwards (for example, when the switch or server that connects to the vPC primary switch is reloaded), the ports remain down due to the vPC consistency check and you cannot add or bring up more vPCs. Apr 19, 2012 · vPC keep-alive status : Suspended (Destination IP not reachable) Configuration consistency status: failed. Enable peer-gateway, auto-recovery, delay restore, and ip arp synchronize (best practice). Number of vPCs configured : 1 . (timeout = 30s) Troubleshooting vPCs. As you've probably seen now, until you have operational members in the port-channels, you'll see the vpc as failed and "consistency check not performed" on one of the switches. Check for vPC setting mismatches on N9K standalone mode switches - brichbourg/N9K-vPC-Consistency-Checker Apr 5, 2022 · Please check "show vpc consistency-parameters vpc <vpc-num>" for the consistency reason of down vpc and for type-2 consistency reasons for any vpc. (timeout = 120s) Oct 5, 2023 · On the LEAF-3 and LEAF-4 in the VPC domain the configuration is to specify the IP addresses for the keep-alive and the Virtual peer link. vPC role : none established . Type-2 consistency status : failed. Because it is a type 2 Nov 9, 2010 · In this scenario, the vPC waits for three consecutive keepalive failures before recovering the vPC links. However they are subject to undesired packet forwarding behavior. int eth 1/12. 09-29-202003:21 PM. About Troubleshooting vPCs, on page 1. Cannot Enable the vPC Feature, on page 4. Consistency checks are performed to ensure that NVE configurations and VN-Segment configurations are identical across vPC peers. in : Mar 4, 2015 · 3. You should not use vPC peer-link and vPC keep-alive over the vPC peer link. Type 2 (QoSMgr Qos configuration incompatible) Primary switch. Interestingly, the vpc consistency parameters are missing the local values for 5K4. vPC domain id : 1. A new type 2 consistency check has been added to validate the switchport mac learn settings on the vPC port-channels. S2 becomes operational primary as expected. show vpc consistency-parameters interface Ethernet x/y. show ip arp vpc-statistics Syntax Description This command has no arguments or keywords. N3K1# sh vpc. Level 1. vPC Consistency Check for Layer 3 Parameters In a vPC topology, vPC peer switches run routing protocols independently and they maintain the routing table independently. show vpc consistency-parameters vpc vpc-id. you dont need to explicitly set a VPC ID. 21. Compare the vPC domain IDs of the two switches and ensure that they match. N7K should Nov 25, 2014 · PETER BUZA. vPC role : primary . This will basically allow you to have a vPC port-channel with F2 interface on one peer and F3 on the second peer. 02-25-2015 07:12 AM. Mar 1, 2019 · A virtual PortChannel (vPC) allows links that are physically connected to two different Cisco Nexus™ 5000 Series devices to appear as a single PortChannel to a third device. Spanning-Tree Protocol (STP) would block one of these links. Nov 29, 2015 · 11-28-2015 04:45 PM - edited 03-05-2019 02:49 AM. Aug 10, 2021 · the ouptut : Legend: (*) - local vPC is down, forwarding via vPC peer-link. A fully functional vPC will have identical outputs in each column. 0(2)N2(1), you can use the following procedure to make configuration changes for Type 1 consistency check parameters on a Cisco Nexus 5000 Series switch. 2(1), when a consistency check detects a mismatch in a parameter from the list of parameters that must be identical, the vPC peer link and vPC are prevented from coming up. Feb 17, 2011 · hi all, I got a pair of 5548, vPC works great. Its like and must be same with peer switch, but i have still facing Please check "show vpc consistency-parameters vpc <vpc-num>" for the consistency reason of down vpc and for type-2 consistency reasons for any vpc. Note To ensure that none of the vPC interfaces are in the suspend mode, enter the show vpc brief and show vpc consistency-parameters commands and check the syslog messages. Type 2 – Peer device or Interface still forward traffic. show ip arp vpc-statistics To display the global statistics for the Address Resolution Protocol (ARP) on a virtual port channel (vPC), use the show ip arp vpc-statistics command. Type-2 consistency status : success . Consistency checks are not performed to verify that Layer 3 configurations in the vPC domain are configured symmetrically. 问题#1:vPC成员端口不兼容. Peer status : peer link is down. I have double checked the complete config and theres not inconsistency. VLANs on a vPC Moved to Suspend State, on page 4. If you don't have identical outputs, your consistency check fails. 12-15-2011 06:22 AM. Number of vPCs configured : 4. Example: switch1# show vpc brief Legend: (*) - local vPC is down, forwarding via vPC peer-link. global port type inconsistent. Nov 26, 2013 · port-channel30 is down (No operational members) vPC Status: Down, vPC number: 30 [packets forwarded via vPC peer-link] Hardware: Port-Channel, address: 547f. Configuration consistency status : failed. In addition to compatibility checks for the individual vPCs, CFSoE also performs consistency checks for a set of switch-wide parameters that must be configured consistently on the two peer switches. vPC domain id : 10. Dual-active excluded VLANs : - Graceful Consistency Check : Enabled. Type-2 consistency reason : SVI type-2 configuration incompatible. There are two type of type 1 consistency as below: Jul 4, 2019 · We have configuring the vpc domain, and vlan database. A common issue among network engineers managing the Cisco Nexus platform is how to form routing adjacencies on hosts over a Virtual Port Channel (vPC) peer link. Sep 21, 2021 · vPC domain id : 10 Peer status : peer adjacency formed ok vPC keep-alive status : Disabled Configuration consistency status : success Per-vlan consistency status : success Type-2 consistency status : success vPC role : primary Number of vPCs configured : 7 Peer Gateway : Disabled Dual-active excluded VLANs : - Graceful Consistency Check : Enabled Solution. The other peer will take the role of secondary and will suspends its own vPC until consistency check is done. 731a) MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec. The intention is to preserve the consistency of the configuration, but in some cases it may be desirable to make changes while the peer link is down, for example provisioning new vPC-attached servers when one of a pair of Nexus Oct 1, 2018 · VPC port or VPC member port – is a port that is part of VPC-based port-channel. vPC role : none established. The CLI show vpc consistency-check vPC <vpc no. Peer Gateway : Disabled. 8. Apr 30, 2013 · Check the show vpc consistency-parameters command to verify that both vPC peer devices have identical type-1 parameters. Number of vPCs configured : 16. For vPC keep-alive, you can use the mgmt0 interface on each switch. View solution in original post. 0(2)N3(1)以降でvPC auto-recoveryがデフォルトで有効となっています。 この Mar 11, 2014 · 6. Per-vlan consistency status : success. Received Type 1 Configuration Element Mismatch, on page 3. The third device can be a Cisco Nexus 2000 Series Fabric Extender or a switch, server, or any other networking device. If a graceful consistency check is enabled (default), the primary switch keeps the vPC up while the secondary switch brings it down. 1 peer-config-check-bypass. •Type 1 Consistency Check • Graceful Consistency check –suspends: • Per-interface inconsistent parameters –vPC member ports on secondary peer set to down state • Globally inconsistent parameters –misconfigured member ports on secondary peer suspended • Parameters: STP mode, STP VLAN state, STP global settings, LACP mode, MTU Apr 20, 2016 · With vPC Graceful Consistency check, suspension occurs only on the secondary peer device. Nov 21, 2012 · Due to the consistency check, the configuration made on one vPC switch could potentially lead to consistency check failure and traffic disruption. Configuration consistency status : success. Number of vPCs configured : 1 In releases earlier than Cisco NX-OS Release 5. 1 dscp 56. 2(2)以降、Nexus5000,6000ではNXOS6. こちらの機能は vPC ヒットレス ロールの変更機能とも呼ばれ、トラフィックに影響を与えることなく、vPC の role を切り替えること vPC Consistency Check שני המתגים החברים ב VPC מבצעים consistency check. The vPC domain includes both vPC peer devices, the Allowed VLANs 1-999,1001-3967,4048-4 1-3967,4048-4093 The Cisco Nexus 5000 Series switch conducts vPC consistency checks when it attempts to bring up a vPC or when you make a configuration change. המשמעות היא ששני המתגים מוודאים שהקונפיגורציה שלהם זהה ואם מזוהה פער שניהם מכבים את הפורטים השייכים ל VPC מסוים. Per-vlan consistency status : success . Enable peer-switch; when activated both vPC peer devices must have the same STP priority set for all vPC VLANs – making them appear as unique STP root bridge, which I mentioned earlier in this article. Type-2 inconsistency reason : SVI type-2 configuration incompatible. Creating a Single Logical Node through vPC (virtual Port Channel) Technology vPC leverages both hardware and software redundancy aspects: vPC uses all port-channel member links available so that in case an individual link fails, hashing algorithm will redirect all flows to the remaining links. Mar 31, 2021 · In this section you will learn:VPC Type-1 and Type-2 Consistency checks with Global mode and port-channel#CISCONEXUS #CCIEDC #VPC LAB: Consistency Check and failover Scenarios: Task : We can use the same topology for this task. interface port-channel1. H. To view the per-VLAN consistency or inconsistency status, enter the show vpc consistency-parameters vlans command. Related Information . The way you want to read this output is just by going down the two right-hand columns (Local Value and Peer Value) and comparing. Type-2 inconsistency reason : Consistency Check Not Performed. The action plan for the hw upgrade can be straight forward: Aug 11, 2011 · Cisco docs state that vpc pairs must have the same VTP config (client or server for ex) : When deployed with vPC, both vPC switches must be configured identically. show vpc consistency. Initial Troubleshooting vPCs Checklist, on page 1. For example, if you configure a router ACL (RACL) on one SVI and you do not configure the router on the corresponding SVI on the vPC peer, a syslog message is not displayed. vPCs in Blocking State, on page 4. There will be an internal port-channel created for enhanced VPC. below is the output of sh vpc consistency-parameters global. 11-25-2014 03:33 AM. Oct 23, 2023 · Configuration inconsistency reason: Consistency Check Not Performed Type-2 inconsistency reason : Consistency Check Not Performed vPC role : none established Number of vPCs configured : 0 Peer Gateway : Enabled Dual-active excluded VLANs : - Graceful Consistency Check : Enabled Auto-recovery status : Enabled, timer is off. vPC role : primary Sep 5, 2020 · Configuration consistency status : success Per-vlan consistency status : success Type-2 consistency status : success vPC role : primary Number of vPCs configured : 1 Peer Gateway : Disabled Dual-active excluded VLANs : - Graceful Consistency Check : Enabled Auto-recovery status : Disabled Delay-restore status : Timer is off. Hope it Helps. Hello Garg, If a graceful consistency check is applied, with regards to type-1, the primary switch keeps the vPC up while the secondary switch brings it down. Mar 31, 2022 · Check the show vpc consistency-parameters command to verify that both vPC peer devices have identical type-1 parameters. Here you can see a list of global consistency checks. Configuration consistency status : failed . Lets see the capture below: And some detail: Please help me to tshoot in deep The vPC consistency check is a mechanism used by the two switches configured as a vPC pair to exchange and verify their configuration compatibility. Dec 19, 2017 · The system-priority command is used to define the LACP priority advertised from vPC ports, and naturally has to be identical on both vPC peers to make them appear from outside as a single box. Configuration inconsistency. Verify that the primary vPC is the primary STP root and the secondary vPC is the secondary STP root. Auto-recovery status : Enabled (timeout = 240 seconds) 使用列出的命令检查特定vPC的不一致性： show vpc consistency-parameters global. The vPC consistency check cannot be performed when the peer link is lost. Configuration inconsistency reason: Secondary IP address does not match. 202# show vpc. vPC peer-link is for all your vlans on both switches. Legend: Type 1 : vPC will be suspended in case of mismatch. Configuration consistency reason: Consistency Check Not Performed. Rate if it Helps. Beginning with Cisco NX-OS Release 5. 2 source 10. Use the commands listed to check the specific vPC inconsistency: show vpc consistency-parameters global show vpc consistency-parameters interface Ethernet x/y show vpc consistency-parameters vlans Aug 15, 2023 · Configuration consistency status : success Per-vlan consistency status : success Type-2 consistency status : success vPC role : secondary Number of vPCs configured : 7 Peer Gateway : Enabled Dual-active excluded VLANs : - Graceful Consistency Check : Enabled Auto-recovery status : Disabled Delay-restore status : Timer is off. C2# C2# sh port-channel summary Flags: D - Down P - Up in port-channel (members) I - Individual H - Hot-standby (LACP only) s - Suspended r - Module-removed b - BFD Session Wait S - Switched R - Routed vPC keep-alive status : peer is alive . You need to set the system-priority to an identical value on both switches (or remove it entirely from both). If you want to define which switch is going Dec 14, 2011 · Options. Jun 4, 2012 · As explained in both scenario, the switch which unsuspends its vPC role using vPC auto-recovery, will continue to remain primary even after peer-link is up. Have a look on best practice on vPC. Peer status : peer adjacency formed ok. Bypassing a vPC Consistency Check When a Peer Link is Lost Type 1 and Type 2 Consistency Check Parameters Before a Cisco Nexus 5000 Series switch brings up a vPC, the two Cisco Nexus 5000 Series switches in the same vPC domain exchange configuration information to verify if both switches have compatible configurations for a vPC topology. vPC peer-link powers off first and then the primary vPC peer powers off. Apr 30, 2020 · 3. In the output of show vpc or show vpc brief command, after every 50th configured vPC port-channel the following message will be displayed: Dec 17, 2013 · Below shows the config of each and some show commands. 1. 5k1. vPC keep-alive status : Disabled. You have one M132 module used for the vPC peer link as well as the L3 uplinks to the core. Use the commands listed to check the specific vPC inconsistency: show vpc consistency-parameters global show vpc consistency-parameters interface Ethernet x/y show vpc consistency-parameters vlans Feb 25, 2015 · VIP Alumni. This how-to is useful when faced with an issue where VPC’s show a consistent state, but RSTP is Consistency checks are not performed to verify that Layer 3 configurations in the vPC domain are configured symmetrically. channel-group 204 mode active. Number of vPCs configured :1. Configure N7K and N7K to check the consistency type 1 by changing the following feature and then verify the effect and revert the configuration to again verify the Result one by one: Global Configuration: Due to the consistency check, the configuration made on one vPC switch could potentially lead to consistency check failure and traffic disruption. and we have problem with SVI and VPC The configuration: N5K1: vpc domain 100 peer-switch role priority 100 system-priority 1024 peer-keepalive destination 192. HI. If this were to happen on the vPC secondary box (N7KB) this would Jan 1, 2021 · However, the command "bypass module-check" disable the module type consistency checker for vPC. With the mismatch of the type 1 consistency check parameters, both vPC devices suspend their vPC member ports for a dual-homed FEX and Enhanced vPC. vPC domain id : 3. Type-2 consistency status : success. vPC keep-alive status : peer is aliveConfiguration consistency status : successPer-vlan consistency status : failedType-2 consistency status : failedType-2 inconsistency reason : SVI type-2 configuration Type-1 VPC Consistency Check: Once CFS starts running on both peer-devices, the CFS protocols provide a copy of the configuration on the local vPC peer device to remote vPC device. switch (config-if)# show vpc brief Legend: Entering no spanning-tree vlan 5 command triggers the inconsistency on the vPC Consistency Checks You can use the show vpc command also shows the vPC consiste ncy check result for each vPC and the reason for the consistency check failure. Legend: (*) - local vPC is down, forwarding via vPC peer-link. This command has a whole series of keywords so that you can dial in the output, but if your vPC isn't coming up because of Type 1 consistencies, or you're losing VLANs because Chapter 1 Virtual Port Channel Operations vPC Consistency Checks • Bypassing a vPC Consistency Check When a Peer Link is Lost, page 1-8 Type 1 and Type 2 Consistency Check Parameters Before a Cisco Nexus 5000 Series switch brings up a vPC, the two Cisco Nexus 5000 Series switches in Oct 13, 2021 · Leaf1# show vpc. In the event where you are to lose the M132 module due to a HW failure you would lose the vPC peer-link as well as the L3 uplinks. 1 day ago · The show vpc consistency-parameters command is useful for troubleshooting and identifying specific parameters that might have caused the consistency check to fail either on the vPC Peer-Link or to the vPC enabled Portchannels: Feb 20, 2023 · Peer status : peer adjacency formed ok. 2/24 and on N7K2 would be 10. Ofc, this is only a good practice during a hardware upgrade. Hi, as you can see from the output of "show vpc" the Type-2 consistency check not performed. Configure HSRP for VLAN 10 with Virtual IP 10. Troubleshoot vPC on NX-OS devices Check the output of show vpc brief €and see if there is any compatibility issue in one of the vPC member ports. Verifying vPCs Using the CLI, on page 2. show vpc consistency-parameters vlans. The default NX-OS behaviour is to not allow any changes to be made to vPCs while the vPC peer link is in a failed state. HTH. 检查vPC成员端口之间是否存在任何兼容性问题，如中所述 Jan 24, 2012 · If any of these parameters are not enabled or defined on either device, the vPC consistency check ignores those parameters. vPC domain is composed of two peer devices. Options. 2 vrf management. please check the output of "show vpc brief" and you will see the port-channel listed there. The purpose of the keep-alive link is to provide a reliable and independent communication path between the two Nexus switches for the VPC peer-link heartbeat and VPC consistency checks. 1/24 and SVI IP on N7K1 is 10. vPC domain id : 20. The per-interface parameters must be consistent per interface, and the global parameters must be consistent globally. If a graceful consistency check is disabled, both peer switches suspend VLANs on the vPC ports. However it is not coming up. The third device can be a switch, server, or any other networking device. Oct 30, 2018 · There is a huge difference between the BLK and BRK port states in the Nexus platform. In response to Rishav Garg. > has been enhanced to display the local and peer values of the switchport mac-learn configuration. This example shows how to display the vPC consistency check status: If the consistency check fails, the consistency check is not performed on vPC member ports that are down. . Consistency Check に引っかかっている場合、“show vpc consistency”コマンドにて何が問題なのかの詳細を確認します “show vpc consistency”コマンドには以下のオプションがあります。 global; vpc (または interface port-channel) To ensure that none of the vPC interfaces are in the suspend mode, enter the show vpc brief and show vpc consistency-parameters commands and check the syslog messages. Feb 10, 2011 · MYN7K# show vpc brief. speed 10000. Note: Type 1 and Type 2 consistency check apply both for global configuration and for vPC interface configuration. Now S1 comes on. You can verify the consistency between vPC peers by using the command show vpc consistency-parameter. Back in the day when engineers wanted to do a multi-chassis port-channel to increase redundancy and resiliency you had to use a VPC Consistency Check and failover Scenarios LAB: Consistency Check and failover Scenarios: Task : We can use the same topology for this task. This chapter describes the Cisco NX-OS virtual port channel (vPC) show commands. ! interface port-channel204. 4. 48. Hi, I am setting up VPC between two Nexus 5624Qs. virtual peer-link destination 10. Brian Gleason. When Type 1 inconsistency is detected then Apr 12, 2018 · Options. This example shows how to display the consistent status of the VLANs on the primary and the secondary switches. When Type 1 inconsistency is detected then Sep 29, 2020 · 5. At this time, S2 retains its primary role and S1 takes a secondary role, a consistency check is performed, and appropriate actions are taken. 10. Jul 24, 2014 · Check the show vpc consistency-parameters command to verify that both vPC peer devices have identical type-1 parameters. Global Configuration: Interface Configuration: N7K2: configuration change on Po10 and make it access port. Without VPC, parallel links are considered as a Layer 2 loop. Solved: Hello, We have the topology in Attachement. However the vPC consistency check show the two switch configs are different! I don't know why vPC still works fine. reliability 255/255, txload 1/255, rxload 1/255. 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). -GI. Configuration inconsistency reason: Consistency Check Not Performed. it's weird that from output of each switch, the local value Type-1 VPC Consistency Check: Once CFS starts running on both peer-devices, the CFS protocols provide a copy of the configuration on the local vPC peer device to remote vPC device. switchport access vlan 1072. Type-2 consistency reason : Consistency Check Not Performed. See the below output of the show vpc consistency-parameters global command. show vpc consistency-parameters 1 2 3 4. Legend: (*) - local vPC is down, forwarding via vPC peer-link . Number of vPCs configured : 2 Oct 12, 2020 · はじめに この記事では、 Cisco Nexus シリーズの vPC で提供されるコマンドの1つである「 vpc role preempt 」について解説します。. peer-keepalive destination 192. When the vPC peer link is lost, the operational secondary switch suspends all of its vPC member ports while the vPC member ports remain on the operational primary switch. Level 3. vvktqkqhpixahbqxrsjy