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<html lang="en-us"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2019"><meta name="DC.rights.owner" content="(C) Copyright 2019"><meta name="DC.Type" content="concept"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="concept_svv_j12_dgb"><meta name="DC.Language" content="en-US"><link rel="stylesheet" type="text/css" href="css/dcnm.css"><title>Brownfield Deployment-Transitioning VXLAN Fabric Management to DCNM</title><link rel="shortcut icon" href="template_images/favicon.png"><link rel="index" href="./index.html"><script src="js/app/main.js" type="text/javascript"></script></head><body id="concept_svv_j12_dgb"><nav role="toc"><ul><li><a href="g_DCNM_landing_page.html">Overview</a></li><li><a href="g_web_client_dashboard_tab.html">Dashboard</a></li><li><a href="g_web_client_topology_tab.html">Topology</a></li><li><a href="g_web_client_control_tab.html">Control</a><ul><li><a href="g_Fabrics_11_1.html">Fabrics</a><ul><li><a href="g_VXLAN_Fabrics_Provisioning_11_1.html">VXLAN BGP EVPN Fabrics Provisioning</a></li><li><a href="c_inventory_switch_interface_11_1.html">Interfaces</a></li><li><a href="c_control_network_VRFs_creation_and_deployment_11_1.html">Creating and Deploying Networks and VRFs</a></li><li><a href="c_msd_fabric_11_1.html">Multi-Site Domain for VXLAN BGP EVPN Fabrics</a></li><li class="active"><a href="c_transition_to_dcnm_fabric_11_1.html">Brownfield Deployment-Transitioning VXLAN Fabric Management to DCNM</a></li><li><a href="c_post_dcnm_11_upgrade_easy_fabric.html">Post DCNM 10.4(2) or 11.0(1) to DCNM 11.1(1) Upgrade for VXLAN BGP EVPN and MSD Fabrics</a></li><li><a href="c_freeform_configurations-11_1.html">Enabling Freeform Configurations on Fabric Switches</a></li></ul></li><li><a href="g_Management.html">Management</a></li><li><a href="c_Configuring_Templates_1014182.html">Deploy</a></li><li><a href="g_Image_Management.html">Image Management</a></li><li><a href="c_eplconfigure.html">Endpoint Locator</a></li></ul></li><li><a href="g_web_client_monitor_tab.html">Monitor</a></li><li><a href="g_web_client_admin_tab.html">Administration</a></li><li><a href="g_web_client_applications_tab.html">Applications</a></li><li><a href="g_web_client_use_cases-VRF-Lite_dcnm11_1.html">Border Provisioning Use Case in VXLAN BGP EVPN Fabrics - VRF Lite</a></li><li><a href="g_web_client_use_cases-Multi-Site_11_1.html">Border Provisioning Use Case in VXLAN BGP EVPN Fabrics - Multi-Site</a></li></ul></nav><main role="main"><article role="article" aria-labelledby="ariaid-title1"><h1 class="title topictitle1" id="ariaid-title1">Brownfield Deployment-Transitioning VXLAN Fabric Management to DCNM </h1><div class="body conbody"><p class="p">This document explains Brownfield deployments, wherein you transition your VXLAN BGP EVPN fabric management to DCNM. The transition involves migrating existing networks configurations to DCNM. </p><p class="p">Typically, your fabric is created and managed through manual CLI configuration or custom automation scripts. Now, you want to start managing the fabric through DCNM. After the migration, the fabric underlay and overlay networks will be managed by DCNM. </p><p class="p">The migration procedure only supports VXLAN BGP EVPN networks that use the best practices mentioned in the Prerequisites section.</p><p class="p">Support of simplified CLIs for VXLAN EVPN fabrics is not supported in either greenfield or brownfield deployments.</p><p class="p" id="concept_svv_j12_dgb__prereq_bf"><strong class="ph b">Prerequisites </strong></p><ul class="ul"><li class="li">
<p class="p">DCNM supported NX-OS software versions. For details, refer
<em class="ph i">Cisco DCNM Release Notes, Release 11.2(1)</em>. </p>
</li><li class="li">
<p class="p">Underlay routing protocol is OSPF or ISIS.</p>
</li><li class="li">
<p class="p">The supported underlay is based on the DCNM 10.2(1) POAP template's best practices for the VXLAN fabric (dcnm_ip_vxlan_fabric_templates.10.2.1.ST.1.zip) available on Cisco.com.</p>
</li><li class="li">
<p class="p">The following fabric wide loopback interface IDs must not overlap:</p>
<ul class="ul"><li class="li">
<p class="p">Routing loopback interface for IGP/BGP.</p>
</li><li class="li">
<p class="p">VTEP loopback ID</p>
</li><li class="li">
<p class="p">Underlay rendezvous point loopback ID if ASM is used for multicast replication. </p>
</li></ul>
</li><li class="li">
<p class="p">BGP configuration uses the ‘router-id’, which is the IP address of the routing loopback interface. </p>
</li><li class="li">
<p class="p">If the iBGP peer template is configured, then it must be configured on the leaf switches and route reflectors. The template name that needs to be used between leaf and route reflector should be identical. </p>
</li><li class="li">
<p class="p">The BGP route reflector and multicast rendezvous point (if applicable) functions are implemented on spine switches. Leaf switches do not support the functions. </p>
</li><li class="li">
<p class="p">Install DCNM <span class="ph">11.2(1)</span> release software. Refer the Installation Guide for more details. Log in to DCNM and set the default LAN Credentials when prompted. </p>
</li><li class="li">
<p class="p">Familiarity with the DCNM <span class="ph">11.2(1)</span> fabric management and monitoring features before initiating the migration process.</p>
</li><li class="li">
<p class="p">Familiarity with VXLAN BGP EVPN fabric concepts and functioning of the fabric from the DCNM perspective. </p>
</li><li class="li">
<p class="p">Fabric switch nodes are operationally stable and functional and all fabric links are up.</p>
</li><li class="li">
<p class="p">vPC switches and the peer links are up before the migration. Ensure that no configuration updates are in progress or changes pending. </p>
</li><li class="li">
<p class="p">Create an inventory list of the switches in the fabric with their IP addresses and credentials. DCNM uses this information to connect to the switches. </p>
</li><li class="li">
<p class="p">Shut down any other controller software you are using presently so that no further configuration changes are made to the VXLAN fabric. Alternatively, disconnect the network interfaces from the controller software (if any) so that no changes are allowed on the switches. </p>
</li><li class="li">
<p class="p">The switch overlay configurations must have the mandatory configurations defined in the shipping DCNM Universal Overlay profiles. Additional network or VRF overlay related configurations found on the switches are preserved in the freeform configuration associated with the network or VRF DCNM entries. </p>
</li><li class="li">
<p class="p">All the overlay network and VRF profile parameters such as VLAN name and route map name should be consistent across all devices in the fabric for the brownfield migration to be successful.</p>
</li></ul><p class="p" id="concept_svv_j12_dgb__p_p54_wcj_dhb"><strong class="ph b">Guidelines and Limitations</strong></p><ul class="ul"><li class="li">
<p class="p">Fabric interfaces can be numbered or unnumbered. </p>
</li><li class="li">
<p class="p">Various
CISCO-Device-Manager-8.4
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CISCO-Device-Manager-8.4 （4249个子文件） 
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