Connectivity Guide

Add untagged access ports to the VXLAN overlay network using either a switch-scoped VLAN or port-scoped VLAN. Only one method is
supported.
• To use a switch-scoped VLAN to add untagged member ports to a virtual network:
a Assign a VLAN to a virtual network in VLAN Interface mode.
interface vlan vlan-id
virtual-network vn-id
exit
b Congure port interfaces as access members of the VLAN in Interface mode.
interface ethernet node/slot/port[:subport]
switchport access vlan vlan-id
exit
Packets received on the untagged ports are transmitted over the virtual network.
• To use a port-scoped VLAN to add untagged member ports to a virtual network:
a Create a reserved VLAN ID to assign untagged trac on member interfaces to a virtual network in CONFIGURATION mode. The
VLAN ID is used internally for all untagged member interfaces on the switch that belong to virtual networks.
virtual-network untagged-vlan untagged-vlan-id
b Congure port interfaces as trunk members and remove the access VLAN in Interface mode.
interface ethernet node/slot/port[:subport]
switchport mode trunk
no switchport access vlan
exit
c Assign the trunk interfaces as untagged members of the virtual network in VIRTUAL-NETWORK mode. You cannot use the
reserved VLAN ID for a legacy VLAN or for tagged trac on member interfaces of virtual networks.
virtual-network vn-id
member-interface ethernet node/slot/port[:subport] untagged
exit
If at least one untagged member interface is assigned to a virtual network, you cannot delete the reserved untagged VLAN ID. If you
recongure the reserved untagged VLAN ID, you must either recongure all untagged member interfaces in the virtual networks to use the
new ID or reload the switch.
Enable routing between virtual networks
In a virtualized data center, when hosts in tenant Layer 2 segments are in dierent IP subnets, congure the VTEPs in the same and
dierent VXLAN virtual networks to act as gateway routers. OS10 supports distributed anycast routing. To route host trac between
virtual networks, you must congure an anycast gateway on each VTEP in a virtual network, including:
• Congure the same anycast MAC address on all VTEPs across all virtual networks. For example, if you use two VTEP switches in three
virtual networks:
VXLAN virtual network
VTEP Anycast gateway MAC address
VNI 11 VTEP 1
VTEP 2
00.11.22.33.44.55
00.11.22.33.44.55
VNI 12 VTEP 1
VTEP 2
00.11.22.33.44.55
00.11.22.33.44.55
VNI 13 VTEP 1
VTEP 2
00.11.22.33.44.55
00.11.22.33.44.55
• Congure a unique IP address on the virtual-network interface on each VTEP across all virtual networks. Congure the same anycast
gateway IP address on all VTEPs in the same virtual network; congure a dierent anycast gateway IP address on all VTEPS in a
dierent virtual network. For example:
518
VXLAN