tenant.bd

A bridge domain is a unique layer 2 forwarding domain that contains one or more subnets. Each bridge domain must be linked to a context.

ACI class	fvBD
RN	BD-{name}
Cursor	BdCursor
Parent	tenant
Atomic	—

Attributes

Accepted as keyword arguments of .bd(name) and of .set(**attrs) on this cursor. Enum parameters also accept the plain string.

parameter	wire	type	values	default	description
name (positional)	name	str	—	—	The bridge domain name.
optimize_wan_bandwidth	OptimizeWanBandwidth	bool	—	False	OptimizeWanBandwidth flag is enabled between sites
arp_flooding	arpFlood	bool	—	False	A property to specify whether ARP flooding is enabled. If flooding is disabled, unicast routing will be performed on the target IP address.
description	descr	str	—	—	Specifies a description of the policy definition root.
enable_rogue_except_mac	enableRogueExceptMac	bool	—	False	rogue exception mac wildcard support at bd level
clear_endpoints	epClear	bool	—	False	Represents the parameter used by the node (i.e. Leaf) to clear all EPs in all leaves for this BD.
ep_move_detection_mode	epMoveDetectMode	L2EpMoveDetectMode	garp	—	The End Point move detection option uses the Gratuitous Address Resolution Protocol (GARP). A gratuitous ARP is an ARP broadcast-type of packet that is used to verify that no other device on the network has the same IP address as the sending device.
bd_host_based_routing	hostBasedRouting	bool	—	False	Enables advertising host routes (/32 prefixes) out of the L3OUT(s) that are associated to this BD.
intersite_bum_traffic_allow	intersiteBumTrafficAllow	bool	—	False	Control whether BUM traffic is allowed between sites
allow_l2stretch_between_sites	intersiteL2Stretch	bool	—	False	l2Stretch flag is enabled between sites
ip_learning	ipLearning	bool	—	True	—
ipv6_multicast_allow	ipv6McastAllow	bool	—	False	Multicast. Flag to indicate if ipv6 multicast is enabled
limit_ip_learn_to_subnets	limitIpLearnToSubnets	bool	—	True	Limits IP address learning to the bridge domain subnets only. Every BD can have multiple subnets associated with it. By default, all IPs are learned.
ipv6_link_local_address	llAddr	str	—	—	The override of the system generated IPv6 link-local address.
mac_address	mac	str	—	—	The MAC address of the bridge domain (BD) or switched virtual interface (SVI). Every BD by default takes the fabric-wide default MAC address. You can override that address with a different one. By default the BD will take a 00:22:BD:F8:19:FF mac address.
mcast_arp_drop	mcastARPDrop	bool	—	True	rogue mcast ARP packet drop
multicast_allow	mcastAllow	bool	—	False	Multicast. Flag to indicate if multicast is enabled
multi_destination_packet_action	multiDstPktAct	L2MultiDstPktAct	bd-flood, drop, encap-flood	bd-flood	The multiple destination forwarding method for L2 Multicast, Broadcast, and Link Layer traffic types.
owner_key	ownerKey	str	—	—	The key for enabling clients to own their data for entity correlation.
owner_tag	ownerTag	str	—	—	A tag for enabling clients to add their own data. For example, to indicate who created this object.
service_bd_routing_disable	serviceBdRoutingDisable	bool	—	False	Disable Routing on service BD
type	type	FvBDType	fc, regular	regular	domain type
unicast_routing	unicastRoute	bool	—	True	The forwarding method based on predefined forwarding criteria (IP or MAC address).
unknown_mac_unicast_action	unkMacUcastAct	L2UnkMacUcastAct	flood, proxy	proxy	The forwarding method for unknown layer 2 destinations.
unknown_multicast_destination_action	unkMcastAct	L2UnkMcastAct	flood, opt-flood	flood	The parameter used by the node (i.e. a leaf) for forwarding data for an unknown multicast destination.
unknown_v6_multicast_destination_action	v6unkMcastAct	L2UnkMcastAct	flood, opt-flood	flood	—
virtual_mac_address	vmac	str	—	—	Virtual MAC address of the BD/SVI. This is used when the BD is extended to multiple sites using l2 Outside.

Children

maker	creates	position
.subnet(subnet, **attrs)	fvSubnet	tenant.bd.subnet
.pim(**attrs)	pimBDP	tenant.bd.pim
.nd_ra_subnet(subnet, **attrs)	ndRaSubnet	tenant.bd.nd_ra_subnet
.legacy_mode(**attrs)	fvAccP	tenant.bd.legacy_mode
.rogue_exception_mac(exception_mac, **attrs)	fvRogueExceptionMac	tenant.bd.rogue_exception_mac
.dhcp_relay_label(name, **attrs)	dhcpLbl	tenant.bd.dhcp_relay_label

Bind aliases

Lazy references, resolved closed-world at push time.

alias	target	flavor	relation
vrf=	fvCtx	name	fvRsCtx
l3out=	l3extOut	name	fvRsBDToOut
fhs=	fhsBDPol	name	fvRsBDToFhs
nd_policy=	ndIfPol	name	fvRsBDToNdP
igmp_snoop=	igmpSnoopPol	name	fvRsIgmpsn
mld_snoop=	mldSnoopPol	name	fvRsMldsn
dhcp_relay=	dhcpRelayP	name	fvRsBDToRelayP
endpoint_retention=	fvEpRetPol	name	fvRsBdToEpRet
netflow_monitor=	netflowMonitorPol	name	fvRsBDToNetflowMonitorPol
monitoring_policy=	monEPGPol	name	fvRsABDPolMonPol
flood_filter=	vzFilter	DN — bind_dn() allowed	fvRsBdFloodTo

APIC diagnostics

States the APIC can flag on this class — it accepts the configuration and reports the inconsistency afterwards.

Config issues

code	meaning
FHS-enabled-on-l2-only-bd	first hop security enabled on layer 2 only bridge domain
bd-cannot-combine-hardware-proxy-and-flood-in-encapsulation	bd-cannot-combine-hardware-proxy-and-flood-in-encapsulation
igmp-snoop-disabled-on-multicast-if	igmpsnoop disabled on multicast enabled BD
l3-mcast-is-enabled-on-vrf-where-bd-has-ip-learn-disable	l3-mcast-is-enabled-on-vrf-where-bd-has-ip-learn-disable

Faults

code	condition
F1386	fltFvBDNoOptArpFwdWithUnkMacFlood
F2305	fltFvBDMulticastEnabledOnL2BD
F2409	fltFvBDInvalidConfigOnBD