You can migrate the SLX TPVM from
            a single-node to multi-node deployment.
     
        Before you begin
            Ensure that both TPVM instances are correctly configured and meet the high
                availability multi-node requirements.
        About this task
Follow this procedure to migrate TPVM from a
            single-node to multi-node
            deployment.
        Procedure
- 
                Download the XCO tar file and
                    digest file to the Linux server. Use these files to transfer the tar file to the
                    SLX as a remote host.
                
                    ```bash
remote-server$ ls
efa-3.4.0-digests.tar.gz  efa-3.4.0.tar.gz 
 
- 
                Verify the PGP signature as described in article 48172 on the Extreme Portal.
            
- 
                (Optional) Back up the XCO
                    state. While the upgrade process does make a backup of the XCO state, as a best
                    practice, perform a manual backup before every upgrade to get a remote copy of
                    the backup.
            
- 
                Enter SLX Linux mode, and transfer the tarball to the SLX using SCP.
                
                     Note    You can copy multiple XCO
                        tarballs to the  /efaboot/ directory. 
SLX# start-shell
    device$ scp user@remote-server:~/builds/efa/efa-3.4.0.tar.gz /efaboot/
 
- 
                To deploy XCO on TPVM from the
                    SLX command line, run the efa deploy
                    command.
                
                    If you have multiple XCO tarballs present in the /efaboot/
                        directory, choose a target version of XCO to install from the version
                        selection menu.  Note    From SLX 20.4.1 and above,
                        a new install or upgrade of XCO on TPVM in a single-node deployment displays
                        the following warning banner: 
SLX# efa deploy
    Step 1: Get IP Address assigned to TPVM to deploy EFA  10.x.x.x.
    Step 2: Checking for EFA packages in /efaboot directory
    1. /efaboot/efa-3.4.0.tar.gz
    2. /efaboot/efa-3.4.0.tar.gz
    Enter option: 1
    **********************************************************************
    *                 ! ! ! WARNING ! ! !                                *
    *  Proceeding with Extreme Fabric Automation deployment              *
    *       1. Do not reboot device(s) or TPVM(s)                        *
    *       2. Do not toggle management port on device(s) or TPVM(s)     *
    *       3. Avoid CTRL+C on the installer window                      *
    **********************************************************************
    Copying EFA package efa-3.4.0.tar.gz to TPVM 10.x.x.x... done.
    Extracting EFA package efa-3.4.0.tar.gz on TPVM 10.x.x.x... done.
    Starting EFA installer.
    ```
    The EFA Installer will continue with a series of dialogs.
 
- 
                When prompted, select Multi-node deployment and
                        OK.
                
                     Tip    Use arrow keys
                        to move between options. Press the space bar to select an option. 
 
- 
                When prompted, enter the peer IP address depending on the IP stack
                    selected.
            
- 
                When prompted, enter the virtual
                    IP address for the cluster.
            
- 
                When prompted, enter the virtual
                    IPv6 address for the cluster.
                
                    
                        - Select Yes and
                            then provide the virtual IPv6 addresses.
- Select No to
                            ignore this optional step.
 
 
- 
                When prompted to configure
                    additional IP addresses for a health check, take one of the following
                    steps.
                
                    
                        - Select Yes and
                            then provide the IPv4 or IPv6 addresses.
- Select No to
                            ignore this optional step.
 
 
- 
                When prompted to configure
                    additional management IP networks, take one of the following steps.
                
                    
                        - Select Yes and
                            then provide the following information when prompted. Repeat as often as
                                necessary.
                                - Sub-interface
                                    name, which is a unique name that contains no more than 11
                                    characters, no white space, and no % or /
                                    characters.
- ID of the VLAN
                                    that the management network uses to tag traffic. Valid values
                                    range from 2 through 4093.
- IP subnet address
                                    in CIDR format. The subnet must not overlap with any IP subnet
                                    that you have already provided.
- An IPv6 address
                                    is optional, but an IPv4 address is mandatory.
 
- Select No to
                            ignore this optional step or when you have finished entering network
                            information.
 
 
- 
                When prompted to configure
                    additional management IP network routes, take one of the following steps.
                
                     Note    XCO Management Interface must have IPv4 address configured. Adding IPv6
                            address is optional while IPv4 is mandatory. 
                        - Select Yes and
                            then provide the following information when prompted. Repeat as often as
                                necessary.
                                - Target network IP
                                    address in CIDR format 
- Source IP address
                                    for outbound traffic
- Next-hop or
                                    gateway IP address through which access to the destination
                                    network is provided
 
- Select No to
                            ignore this optional step or when you have finished entering route
                            information.
 
 As the installation
                    proceeds, messages display showing the installation progress. 
- 
                Verify the installation.
                
                    - 
                        On the SLX device, run
                            the show efa
                                status command to see details of the installation and the
                            state of services. 
                    
- 
                        From the XCO command line, run
                            the efactl
                                status command to see the status of nodes, pods, and
                            services. 
                    
- 
                        From the XCO command line, run
                            the efa
                                status command for concise status information.