# Source code for pyeapi.api.interfaces

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    """Module for working with interfaces in EOS

    This module provides an API for pragmatically working with EOS interface
    configurations.  Interfaces include any data or management plane interface
    available in EOS.

    Parameters:
        name (string): The name of the interface the configuration should be
            applied to.  The interface name is the full interface identifier.

        shutdown (boolean): True if the interface is administratively disabled,
            and False if the interface is administratively enable.  This value
            does not validate the interfaces operational state.

        description (string): The interface description string.  This value is
            an arbitrary operator defined value.

        sflow (boolean): True if sFlow is enabled on the interface otherwise
            False

        flowcontrol_send (string): The flowcontrol send configuration value for
            the interface.  Valid values are on or off

        flowcontrol_receive (string): The flowcontrol receive configuration value
            for the interface.  Valid values are on or off

    """

    import re

    from pyeapi.api import EntityCollection
    from pyeapi.utils import ProxyCall

    MIN_LINKS_RE = re.compile(r'(?<=\s{3}min-links\s)(?P<value>.+)$', re.M)

    DEFAULT_LACP_MODE = 'on'
    DEFAULT_LACP_FALLBACK = 'disabled'
    DEFAULT_LACP_FALLBACK_TIMEOUT = 90

    VALID_INTERFACES = frozenset([
        'Ethernet',
        'Management',
        'Loopback',
        'Port-Channel',
        'Vlan',
        'Vxlan',
    ])

    def isvalidinterface(value):
        match = re.match(r'([EPVLM][a-z-C]+)', value)
        return match and match.group() in VALID_INTERFACES

    class Interfaces(EntityCollection):

        def __init__(self, node, *args, **kwargs):
            super(Interfaces, self).__init__(node, *args, **kwargs)
            self._instances = dict()

        def get(self, name):
            return self.get_instance(name)[name]

        def getall(self):
            """Returns all interfaces in a dict object.

            Returns:
                A Python dictionary object containing all interface
                configuration indexed by interface name::

                    {
                        "Ethernet1": {...},
                        "Ethernet2": {...}
                    }

            """
            interfaces_re = re.compile(r'(?<=^interface\s)(.+)$', re.M)

            response = dict()
            for name in interfaces_re.findall(self.config):
                interface = self.get(name)
                if interface:
                    response[name] = interface
            return response

        def __getattr__(self, name):
            return ProxyCall(self.marshall, name)

        def get_instance(self, interface):
            cls = INTERFACE_CLASS_MAP.get(interface[0:2]) or BaseInterface
            if cls in self._instances:
                instance = self._instances[cls]
            else:
                instance = cls(self.node)
                self._instances[cls] = instance
            return instance

        def marshall(self, name, *args, **kwargs):
            interface = args[0]
            if not isvalidinterface(interface):
                raise ValueError('invalid interface {}'.format(interface))

            instance = self.get_instance(interface)
            if not hasattr(instance, name):
                raise AttributeError("'%s' object has no attribute '%s'" %
                                     (instance, name))
            method = getattr(instance, name)
            return method(*args, **kwargs)

    class BaseInterface(EntityCollection):

        def __str__(self):
            return 'Interface'

        def get(self, name):
            """Returns a generic interface as a set of key/value pairs

            This class is should normally serve as a  base class for building more
            specific interface resources.  The attributes of this resource are
            common to all interfaces regardless of type in EOS.

            The generic interface resource returns the following:

                * name (str): The name of the interface
                * type (str): Always returns 'generic'
                * shutdown (bool): True if the interface is shutdown
                * description (str): The interface description value

            Args:
                name (str): The interface identifier to retrieve from the
                    running-configuration

            Returns:
                A Python dictionary object of key/value pairs that represents
                    the interface configuration.  If the specified interface
                    does not exist, then None is returned
            """
            config = self.get_block('^interface %s' % name)
            if not config:
                return None

            resource = dict(name=name, type='generic')
            resource.update(self._parse_shutdown(config))
            resource.update(self._parse_description(config))
            return resource

        def _parse_shutdown(self, config):
            """Scans the specified config block and returns the shutdown value

            Args:
                config (str): The interface config block to scan

            Returns:
                dict: Returns a dict object with the shutdown value retrieved
                    from the config block.  The returned dict object is intended
                    to be merged into the interface resource dict
            """
            value = 'no shutdown' not in config
            return dict(shutdown=value)

        def _parse_description(self, config):
            """Scans the specified config block and returns the description value

            Args:
                config (str): The interface config block to scan

            Returns:
                dict: Returns a dict object with the description value retrieved
                    from the config block.  If the description value is not
                    configured, None is returned as the value.  The returned dict
                    is intended to be merged into the interface resource dict.
            """
            value = None
            match = re.search(r'description (.+)$', config, re.M)
            if match:
                value = match.group(1)
            return dict(description=value)

        def create(self, name):
            """Creates a new interface on the node

            Note:
                This method will attempt to create the interface regardless
                if the interface exists or not.  If the interface already exists
                then this method will still return True

            Args:
                name (string): The full name of the interface.

            Returns:
                True if the interface could be created otherwise False (see Note)

            """
            return self.configure('interface %s' % name)

        def delete(self, name):
            """Deletes the interface from the node

            Note:
                This method will attempt to delete the interface from the nodes
                operational config.  If the interface does not exist then this
                method will not perform any changes but still return True

            Args:
                name (string): The full name of the interface

            Returns:
                True if the interface could be deleted otherwise False (see Node)

            """
            return self.configure('no interface %s' % name)

        def default(self, name):
            """Defaults an interface in the running configuration

            Args:
                name (string): The full name of the interface

            Returns:
                True if the command operation succeeds otherwise False
            """
            return self.configure('default interface %s' % name)

        def set_encapsulation(self, name, vid, default=False, disable=False):
            """Configures the subinterface encapsulation value

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)
                vid (int): The vlan id number
                default (boolean): Specifies to default the subinterface
                    encapsulation
                disable (boolean): Specifies to disable the subinterface
                    encapsulation

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            if '.' not in name:
                raise NotImplementedError('parameter encapsulation can only be'
                                          ' set on subinterfaces')
            if name[0:2] not in ['Et', 'Po']:
                raise NotImplementedError('parameter encapsulation can only be'
                                          ' set on Ethernet and Port-Channel'
                                          ' subinterfaces')
            commands = ['interface %s' % name]
            commands.append(self.command_builder('encapsulation dot1q vlan',
                                                 str(vid), default=default,
                                                 disable=disable))
            return self.configure(commands)

        def set_description(self, name, value=None, default=False, disable=False):
            """Configures the interface description

            EosVersion:
                4.13.7M

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)
                value (string): The value to set the description to.
                default (boolean): Specifies to default the interface description
                disable (boolean): Specifies to negate the interface description

            Returns:
                True if the operation succeeds otherwise False
            """
            string = 'description'
            commands = self.command_builder(string, value=value, default=default,
                                            disable=disable)
            return self.configure_interface(name, commands)

        def set_shutdown(self, name, default=False, disable=True):
            """Configures the interface shutdown state

            Default configuration for set_shutdown is disable=True, meaning
            'no shutdown'. Setting both default and disable to False will
            effectively enable shutdown on the interface.

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)

                default (boolean): Specifies to default the interface shutdown

                disable (boolean): Specifies to disable interface shutdown, i.e.
                    disable=True => no shutdown

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            commands = ['interface %s' % name]
            commands.append(self.command_builder('shutdown', value=True,
                                                 default=default, disable=disable))
            return self.configure(commands)

    class EthernetInterface(BaseInterface):

        def __str__(self):
            return 'EthernetInterface'

        def get(self, name):
            """Returns an interface as a set of key/value pairs

            Args:
                name (string): the interface identifier to retrieve the from
                    the configuration

            Returns:
                A Python dictionary object of key/value pairs that represent
                the current configuration for the specified node.  If the
                specified interface name does not exist, then None is returned::

                    {
                        "name": <string>,
                        "type": "ethernet",
                        "sflow": [true, false],
                        "flowcontrol_send": [on, off],
                        "flowcontrol_receive": [on, off]
                    }
            """
            config = self.get_block('^interface %s' % name)

            if not config:
                return None

            resource = super(EthernetInterface, self).get(name)
            resource.update(dict(name=name, type='ethernet'))
            resource.update(self._parse_sflow(config))
            resource.update(self._parse_flowcontrol_send(config))
            resource.update(self._parse_flowcontrol_receive(config))
            return resource

        def _parse_sflow(self, config):
            """Scans the specified config block and returns the sflow value

            Args:
                config (str): The interface config block to scan

            Returns:
                dict: Returns a dict object with the sflow value retrieved
                    from the config block.  The returned dict object is intended
                    to be merged into the interface resource dict
            """
            value = 'no sflow' not in config
            return dict(sflow=value)

        def _parse_flowcontrol_send(self, config):
            """Scans the config block and returns the flowcontrol send value

            Args:
                config (str): The interface config block to scan

            Returns:
                dict: Returns a dict object with the flowcontrol send value
                    retrieved from the config block.  The returned dict object
                    is intended to be merged into the interface resource dict
            """
            value = 'off'
            match = re.search(r'flowcontrol send (\w+)$', config, re.M)
            if match:
                value = match.group(1)
            return dict(flowcontrol_send=value)

        def _parse_flowcontrol_receive(self, config):
            """Scans the config block and returns the flowcontrol receive value

            Args:
                config (str): The interface config block to scan

            Returns:
                dict: Returns a dict object with the flowcontrol receive value
                    retrieved from the config block.  The returned dict object
                    is intended to be merged into the interface resource dict
            """
            value = 'off'
            match = re.search(r'flowcontrol receive (\w+)$', config, re.M)
            if match:
                value = match.group(1)
            return dict(flowcontrol_receive=value)

        def create(self, name):
            """Create an Ethernet subinterface

            Args:
                name (string): The subinterface name. Ex: Ethernet1.1

            Raises:
                NotImplementedError: creating physical Ethernet interfaces is not
                supported. Only subinterfaces can be created.
            """
            if '.' not in name:
                raise NotImplementedError('creating physical Ethernet interfaces'
                                          ' is not supported. Only subinterfaces'
                                          ' can be created')
            return self.configure(['interface %s' % name])

        def delete(self, name):
            """Delete an Ethernet subinterfaces

            Args:
                name (string): The subinterface name. Ex: Ethernet1.1

            Raises:
                NotImplementedError: creating physical Ethernet interfaces is not
                supported. Only subinterfaces can be created.
            """
            if '.' not in name:
                raise NotImplementedError('deleting physical Ethernet interfaces'
                                          ' is not supported. Only subinterfaces'
                                          ' can be created')
            return self.configure(['no interface %s' % name])

        def set_flowcontrol_send(self, name, value=None, default=False,
                                 disable=False):
            """Configures the interface flowcontrol send value

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)

                value (boolean): True if the interface should enable sending flow
                    control packets, otherwise False

                default (boolean): Specifies to default the interface flow
                    control send value

                disable (boolean): Specifies to disable the interface flow
                    control send value

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            return self.set_flowcontrol(name, 'send', value, default, disable)

        def set_flowcontrol_receive(self, name, value=None, default=False,
                                    disable=False):
            """Configures the interface flowcontrol receive value

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)

                value (boolean): True if the interface should enable receiving
                    flow control packets, otherwise False

                default (boolean): Specifies to default the interface flow
                    control receive value

                disable (boolean): Specifies to disable the interface flow
                    control receive value

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            return self.set_flowcontrol(name, 'receive', value, default, disable)

        def set_flowcontrol(self, name, direction, value=None, default=False,
                            disable=False):
            """Configures the interface flowcontrol value

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)

                direction (string): one of either 'send' or 'receive'

                value (boolean): True if the interface should enable flow control
                    packet handling, otherwise False

                default (boolean): Specifies to default the interface flow control
                    send or receive value

                disable (boolean): Specifies to disable the interface flow control
                    send or receive value

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            if value is not None:
                if value not in ['on', 'off']:
                    raise ValueError('invalid flowcontrol value')

            if direction not in ['send', 'receive']:
                raise ValueError('invalid direction specified')

            commands = ['interface %s' % name]
            commands.append(self.command_builder('flowcontrol %s' % direction,
                                                 value=value, default=default,
                                                 disable=disable))
            return self.configure(commands)

        def set_sflow(self, name, value=None, default=False, disable=False):
            """Configures the sFlow state on the interface

            Args:
                name (string): The interface identifier.  It must be a full
                    interface name (ie Ethernet, not Et)

                value (boolean): True if sFlow should be enabled otherwise False

                default (boolean): Specifies the default value for sFlow

                disable (boolean): Specifies to disable sFlow

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            if value not in [True, False, None]:
                raise ValueError

            commands = ['interface %s' % name]
            commands.append(self.command_builder('sflow enable', value=value,
                                                 default=default, disable=disable))
            return self.configure(commands)

        def set_vrf(self, name, vrf, default=False, disable=False):
            """Applies a VRF to the interface

               Note: VRF being applied to interface must already exist in switch
                   config. Ethernet port must be in routed mode. This functionality
                   can also be handled in the VRF api.

               Args:
                   name (str): The interface identifier.  It must be a full
                       interface name (ie Ethernet, not Et)
                   vrf (str): The vrf name to be applied to the interface
                   default (bool): Specifies the default value for VRF
                   disable (bool): Specifies to disable VRF

               Returns:
                   True if the operation succeeds otherwise False is returned
            """
            commands = ['interface %s' % name]
            if self.version_number >= '4.23':
                commands.append(self.command_builder('vrf', vrf,
                                                     default=default,
                                                     disable=disable))
            else:
                commands.append(self.command_builder('vrf forwarding', vrf,
                                                     default=default,
                                                     disable=disable))
            return self.configure(commands)

    class PortchannelInterface(BaseInterface):

        def __str__(self):
            return 'PortchannelInterface'

        def get(self, name):
            """Returns a Port-Channel interface as a set of key/value pairs

            Args:
                name (str): The interface identifier to retrieve from the
                    running-configuration

            Returns:
                A Python dictionary object of key/value pairs that represents
                the interface configuration.  If the specified interface
                does not exist, then None is returned::

                    {
                        "name": <string>,
                        "type": "portchannel",
                        "members": <arrary of interface names>,
                        "minimum_links: <integer>,
                        "lacp_mode": [on, active, passive]
                    }

            """
            config = self.get_block('^interface %s' % name)
            if not config:
                return None

            response = super(PortchannelInterface, self).get(name)
            response.update(dict(name=name, type='portchannel'))

            response['members'] = self.get_members(name)
            response['lacp_mode'] = self.get_lacp_mode(name)
            response.update(self._parse_minimum_links(config))
            response.update(self._parse_lacp_timeout(config))
            response.update(self._parse_lacp_fallback(config))
            return response

        def _parse_minimum_links(self, config):
            value = 0
            match = re.search(r'port-channel min-links (\d+)', config)
            if match:
                value = int(match.group(1))
            return dict(minimum_links=value)

        def _parse_lacp_fallback(self, config):
            value = DEFAULT_LACP_FALLBACK
            match = re.search(r'lacp fallback (static|individual)', config)
            if match:
                value = match.group(1)
            return dict(lacp_fallback=value)

        def _parse_lacp_timeout(self, config):
            value = DEFAULT_LACP_FALLBACK_TIMEOUT
            match = re.search(r'lacp fallback timeout (\d+)', config)
            if match:
                value = int(match.group(1))
            return dict(lacp_timeout=value)

        def get_lacp_mode(self, name):
            """Returns the LACP mode for the specified Port-Channel interface

            Args:
                name(str): The Port-Channel interface name to return the LACP
                    mode for from the configuration

            Returns:
                The configured LACP mode for the interface.  Valid mode values
                    are 'on', 'passive', 'active'

            """
            members = self.get_members(name)
            if not members:
                return DEFAULT_LACP_MODE

            for member in self.get_members(name):
                match = re.search(r'channel-group\s\d+\smode\s(?P<value>.+)',
                                  self.get_block('^interface %s' % member))
                return match.group('value')

        def get_members(self, name):
            """Returns the member interfaces for the specified Port-Channel

            Args:
                name(str): The Port-channel interface name to return the member
                    interfaces for

            Returns:
                A list of physical interface names that belong to the specified
                    interface
            """
            grpid = re.search(r'(\d+)', name).group()
            command = 'show port-channel %s all-ports' % grpid
            config = self.node.enable(command, 'text')
            return re.findall(r'\b(?!Peer)Ethernet[\d/]*\b',
                              config[0]['result']['output'])

        def set_members(self, name, members, mode=None):
            """Configures the array of member interfaces for the Port-Channel

            Args:
                name(str): The Port-Channel interface name to configure the member
                    interfaces

                members(list): The list of Ethernet interfaces that should be
                    member interfaces

                mode(str): The LACP mode to configure the member interfaces to.
                    Valid values are 'on, 'passive', 'active'. When there are
                    existing channel-group members and their lacp mode differs
                    from this attribute, all of those members will be removed and
                    then re-added using the specified lacp mode. If this attribute
                    is omitted, the existing lacp mode will be used for new
                    member additions.

            Returns:
                True if the operation succeeds otherwise False
            """
            commands = list()
            grpid = re.search(r'(\d+)', name).group()
            current_members = self.get_members(name)
            lacp_mode = self.get_lacp_mode(name)
            if mode and mode != lacp_mode:
                lacp_mode = mode
                self.set_lacp_mode(grpid, lacp_mode)

            # remove members from the current port-channel interface
            for member in set(current_members).difference(members):
                commands.append('interface %s' % member)
                commands.append('no channel-group %s' % grpid)

            # add new member interfaces to the port-channel interface
            for member in set(members).difference(current_members):
                commands.append('interface %s' % member)
                commands.append('channel-group %s mode %s' % (grpid, lacp_mode))

            return self.configure(commands) if commands else True

        def set_lacp_mode(self, name, mode):
            """Configures the LACP mode of the member interfaces

            Args:
                name(str): The Port-Channel interface name to configure the
                    LACP mode

                mode(str): The LACP mode to configure the member interfaces to.
                    Valid values are 'on, 'passive', 'active'

            Returns:
                True if the operation succeeds otherwise False
            """
            if mode not in ['on', 'passive', 'active']:
                return False

            grpid = re.search(r'(\d+)', name).group()

            remove_commands = list()
            add_commands = list()

            for member in self.get_members(name):
                remove_commands.append('interface %s' % member)
                remove_commands.append('no channel-group %s' % grpid)
                add_commands.append('interface %s' % member)
                add_commands.append('channel-group %s mode %s' % (grpid, mode))

            return self.configure(remove_commands + add_commands)

        def set_minimum_links(self, name, value=None, default=False,
                              disable=False):
            """Configures the Port-Channel min-links value

            Args:
                name(str): The Port-Channel interface name

                value(str): The value to configure the min-links

                default (bool): Specifies to default the port channel min-links
                    value

                disable (bool): Specifies to disable the port channel min-links
                    value

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            commands = ['interface %s' % name]
            commands.append(self.command_builder('port-channel min-links',
                                                 value=value, default=default,
                                                 disable=disable))
            return self.configure(commands)

        def set_lacp_fallback(self, name, mode=None):
            """Configures the Port-Channel lacp_fallback

            Args:
                name(str): The Port-Channel interface name

                mode(str): The Port-Channel LACP fallback setting
                    Valid values are 'disabled', 'static', 'individual':

                    * static  - Fallback to static LAG mode
                    * individual - Fallback to individual ports
                    * disabled - Disable LACP fallback

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            if mode not in ['disabled', 'static', 'individual']:
                return False
            disable = True if mode == 'disabled' else False
            commands = ['interface %s' % name]
            commands.append(self.command_builder('port-channel lacp fallback',
                                                 value=mode, disable=disable))
            return self.configure(commands)

        def set_lacp_timeout(self, name, value=None):
            """Configures the Port-Channel LACP fallback timeout
               The fallback timeout configures the period an interface in
               fallback mode remains in LACP mode without receiving a PDU.

            Args:
                name(str): The Port-Channel interface name

                value(int): port-channel lacp fallback timeout in seconds

            Returns:
                True if the operation succeeds otherwise False is returned
            """
            commands = ['interface %s' % name]
            string = 'port-channel lacp fallback timeout'
            commands.append(self.command_builder(string, value=value))
            return self.configure(commands)

    class VxlanInterface(BaseInterface):

        DEFAULT_SRC_INTF = ''
        DEFAULT_MCAST_GRP = ''

        def __str__(self):
            return 'VxlanInterface'

        def get(self, name):
            """Returns a Vxlan interface as a set of key/value pairs

            The Vxlan interface resource returns the following:

                * name (str): The name of the interface
                * type (str): Always returns 'vxlan'
                * source_interface (str): The vxlan source-interface value
                * multicast_group (str): The vxlan multicast-group value
                * udp_port (int): The vxlan udp-port value
                * vlans (dict): The vlan to vni mappings
                * flood_list (list): The list of global VTEP flood list
                * multicast_decap (bool): If the multicast decap
                                          feature is configured

            Args:
                name (str): The interface identifier to retrieve from the
                    running-configuration

            Returns:
                A Python dictionary object of key/value pairs that represents
                    the interface configuration.  If the specified interface
                    does not exist, then None is returned
            """
            config = self.get_block('^interface %s' % name)
            if not config:
                return None

            response = super(VxlanInterface, self).get(name)
            response.update(dict(name=name, type='vxlan'))

            response.update(self._parse_source_interface(config))
            response.update(self._parse_multicast_group(config))
            response.update(self._parse_udp_port(config))
            response.update(self._parse_vlans(config))
            response.update(self._parse_flood_list(config))
            response.update(self._parse_multicast_decap(config))

            return response

        def _parse_source_interface(self, config):
            """ Parses the conf block and returns the vxlan source-interface value

            Parses the provided configuration block and returns the value of
            vxlan source-interface.  If the value is not configured, this method
            will return DEFAULT_SRC_INTF instead.

            Args:
                config (str): The Vxlan config block to scan

            Return:
                dict: A dict object intended to be merged into the resource dict
            """
            match = re.search(r'vxlan source-interface ([^\s]+)', config)
            value = match.group(1) if match else self.DEFAULT_SRC_INTF
            return dict(source_interface=value)

        def _parse_multicast_group(self, config):
            match = re.search(r'vxlan multicast-group '
                              r'([\d]{3}\.[\d]+\.[\d]+\.[\d]+)',
                              config)
            value = match.group(1) if match else self.DEFAULT_MCAST_GRP
            return dict(multicast_group=value)

        def _parse_multicast_decap(self, config):
            value = 'vxlan multicast-group decap' in config
            return dict(multicast_decap=bool(value))

        def _parse_udp_port(self, config):
            match = re.search(r'vxlan udp-port (\d+)', config)
            value = int(match.group(1))
            return dict(udp_port=value)

        def _parse_vlans(self, config):
            vlans = frozenset(re.findall(r'vxlan vlan (\d+)', config))
            values = dict()

            for vid in vlans:
                values[vid] = dict()

                regexp = r'vxlan vlan {} vni (\d+)'.format(vid)
                match = re.search(regexp, config)
                values[vid]['vni'] = match.group(1) if match else None

                regexp = r'vxlan vlan {} flood vtep (.*)$'.format(vid)
                matches = re.search(regexp, config, re.M)
                flood_list = matches.group(1).split(' ') if matches else []
                values[vid]['flood_list'] = flood_list

            return dict(vlans=values)

        def _parse_flood_list(self, config):
            match = re.search(r'vxlan flood vtep (.+)$', config, re.M)
            values = list()
            if match:
                values = match.group(1).split(' ')
            return dict(flood_list=values)

        def set_source_interface(self, name, value=None, default=False,
                                 disable=False):
            """Configures the Vxlan source-interface value

            EosVersion:
                4.13.7M

            Args:
                name(str): The interface identifier to configure, defaults to
                    Vxlan1
               value(str): The value to configure the source-interface to
               default(bool): Configures the source-interface value to default
               disable(bool): Negates the source-interface

            Returns:
                True if the operation succeeds otherwise False
            """
            string = 'vxlan source-interface'
            cmds = self.command_builder(string, value=value, default=default,
                                        disable=disable)
            return self.configure_interface(name, cmds)

        def set_multicast_group(self, name, value=None, default=False,
                                disable=False):
            """Configures the Vxlan multicast-group value

            EosVersion:
                4.13.7M

            Args:
                name(str): The interface identifier to configure, defaults to
                    Vxlan1
               value(str): The value to configure the multicast-group to
               default(bool): Configures the mulitcast-group value to default
               disable(bool): Negates the multicast-group value

            Returns:
                True if the operation succeeds otherwise False
            """
            string = 'vxlan multicast-group'
            cmds = self.command_builder(string, value=value, default=default,
                                        disable=disable)
            return self.configure_interface(name, cmds)

        def set_multicast_decap(self, name, default=False,
                                disable=False):
            """Configures the Vxlan multicast-group decap feature

            EosVersion:
                4.15.0M

            Args:
                name(str): The interface identifier to configure, defaults to
                    Vxlan1
               default(bool): Configures the mulitcast-group decap value to default
               disable(bool): Negates the multicast-group decap value

            Returns:
                True if the operation succeeds otherwise False
            """
            string = 'vxlan multicast-group decap'
            if(default or disable):
                cmds = self.command_builder(string, value=None, default=default,
                                            disable=disable)
            else:
                cmds = [string]
            return self.configure_interface(name, cmds)

        def set_udp_port(self, name, value=None, default=False, disable=False):
            """Configures vxlan udp-port value

            EosVersion:
                4.13.7M

            Args:
                name(str): The name of the interface to configure
                value(str): The value to set udp-port to
                default(bool): Configure using the default keyword
                disable(bool): Negate the udp-port value

            Returns:
                True if the operation succeeds otherwise False
            """
            string = 'vxlan udp-port'
            cmds = self.command_builder(string, value=value, default=default,
                                        disable=disable)
            return self.configure_interface(name, cmds)

        def add_vtep(self, name, vtep, vlan=None):
            """Adds a new VTEP endpoint to the global or local flood list

            EosVersion:
                4.13.7M

            Args:
                name (str): The name of the interface to configure
                vtep (str): The IP address of the remote VTEP endpoint to add
                vlan (str): The VLAN ID associated with this VTEP.  If the VLAN
                keyword is used, then the VTEP is configured as a local flood
                endpoing

            Returns:
                True if the command completes successfully
            """
            if not vlan:
                cmd = 'vxlan flood vtep add {}'.format(vtep)
            else:
                cmd = 'vxlan vlan {} flood vtep add {}'.format(vlan, vtep)
            return self.configure_interface(name, cmd)

        def remove_vtep(self, name, vtep, vlan=None):
            """Removes a VTEP endpoint from the global or local flood list

            EosVersion:
                4.13.7M

            Args:
                name (str): The name of the interface to configure
                vtep (str): The IP address of the remote VTEP endpoint to add
                vlan (str): The VLAN ID associated with this VTEP.  If the VLAN
                keyword is used, then the VTEP is configured as a local flood
                endpoing

            Returns:
                True if the command completes successfully
            """
            if not vlan:
                cmd = 'vxlan flood vtep remove {}'.format(vtep)
            else:
                cmd = 'vxlan vlan {} flood vtep remove {}'.format(vlan, vtep)
            return self.configure_interface(name, cmd)

        def update_vlan(self, name, vid, vni):
            """Adds a new vlan to vni mapping for the interface

            EosVersion:
                4.13.7M

            Args:
                vlan (str, int): The vlan id to map to the vni
                vni (str, int): The vni value to use

            Returns:
                True if the command completes successfully

            """
            cmd = 'vxlan vlan add %s vni %s' % (vid, vni)
            return self.configure_interface(name, cmd)

        def remove_vlan(self, name, vid):
            """Removes a vlan to vni mapping for the interface

            EosVersion:
                4.13.7M

            Args:
                vlan (str, int): The vlan id to map to the vni

            Returns:
                True if the command completes successfully

            """
            return self.configure_interface(name, 'vxlan vlan remove %s vni' % vid)

    INTERFACE_CLASS_MAP = {
        'Et': EthernetInterface,
        'Po': PortchannelInterface,
        'Vx': VxlanInterface
    }

    def instance(api):
        return Interfaces(api)