Link flap is a situation in which a physical interface on a switch continually goes up and down over a period of time. The Port bring-up delay (milliseconds) parameter is not honored on fabric extender (FEX) ports. Set the delay only as required in most cases, you do not need to set a delay. The delay is used to help avoid CRC errors during link bringup when using some third-party adapters. When you configure a link level policy, you can set the Port bring-up delay (milliseconds) parameter, which specifies a time in milliseconds that the decision feedback equalizer (DFE) tuning is delayed when a port See the tooltips and online help for more information about the fields. In the Create Link Level Policy dialog, fill out the fields as appropriate for your desired configuration. Right-click Link Level and choose Create Link Level Policy. In the Navigation pane, choose Policies > Interface > Link Level. On the menu bar, choose Fabric > Access Policies. This feature is supported only with the Cisco N9K-C93108TC-EX and N9K-C93108TC-FX leaf switches using copper cables.Ĭonfiguring a Link Level Policy Using the GUI Procedure You can enable EMI retrain when you configure a link level policy by choosing enable for the EMI Retrain property. Enable EMI retrain if your data center environment In the 5.2(4) and later releases, the electromagnetic interference (EMI) retrain feature filters any noise on a link due toĮlectromagnetic interference, and retrains the link to avoid a link flap. (Layer 1) interface configurations, such as auto-negotiation, port speed, and link debounce. A link level policy includes the physical layer You can configure link level policies, which are a type of access policy. This chapter contains the following sections: Creating a Mis-cabling Protocol Interface Policy Using the GUI (Optional).Showing the Hidden Policies Using the GUI.Validating a Per Port Policy Using the GUI.Configuring a Per Port Policy Using the GUI.Create an Error Disabled Recovery Policy.Create a Global Attachable Access Entity Profile.Provisioning Global Fabric Access Policies.Configure a Fabric Port Tracking Policy.Creating a Load Balancer Policy Using the REST API.Creating a GTP Load Balancer Policy Using the CLI.Creating a Dynamic Packet Prioritization Policy Using the CLI.Creating a Dynamic Load Balancer Policy Using the CLI.Creating a Load Balancer Policy Using the CLI.Creating a Load Balancer Policy Using the Cisco APIC GUI.Configuring the Endpoint Listen Policy Using the GUI.Configuring COOP Authentication Using the REST API.Configuring COOP Authentication Using the Cisco NX-OS-Style CLI.Configuring COOP Authentication Using the APIC GUI.Disabling COOP Endpoint Dampening Using the REST API.Clearing a COOP Dampened Endpoint Using the Switch CLI.Clearing COOP Dampened Endpoints Using the GUI.Viewing COOP Dampened Endpoints Using the Switch CLI.Viewing COOP Dampened Endpoints Using the GUI.Configuring the Rogue/COOP Exception List of an Existing Bridge Domain Using the REST API.Configuring the Rogue/COOP Exception List of an Existing Bridge Domain Using the GUI.Configuring the Rogue/COOP Exception List While Creating a Bridge Domain Using the GUI.Guidelines and Limitations for the Rogue/COOP Exception List.Configure the Rogue Endpoint Control Policy Using the REST API.Configure the Rogue Endpoint Control Policy Using the NX-OS Style CLI.Configuring the Rogue Endpoint Control Policy Using the GUI.Limitations of the Rogue Endpoint Control Policy.About the Rogue Endpoint Control Policy.Configure a Fabric Wide Control Plane MTU Policy.Create a BGP Route Reflector Policy and Route Reflector Node Endpoints.Configuring APIC In-Band or Out-of-Band Connectivity Preferences.

Provisioning Fabric Wide System Settings.Configuring a Custom Certificate for Cisco ACI HTTPS Access Using the GUI.Configuring Custom Certificate Guidelines.Configuring a DNS Service Policy to Connect with DNS Providers Using the GUI.Policy for Priority of IPv4 or IPv6 in a DNS Profile.Configuring External Destinations with an In-Band DNS Service Policy.Configuring a DHCP Server Policy for the APIC Infrastructure Using the REST API.Configuring a DHCP Server Policy for the APIC Infrastructure Using the NX-OS Style CLI.Configuring a DHCP Server Policy for the APIC Infrastructure Using the GUI.Configuring the Datetime Format Using the GUI.Configuring a Link Flap Policy Using the GUI.Configuring a Link Level Policy Using the GUI.

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