Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 433)

• UDLD, LACP, or Keepalive
• Path MTU discovery
• Hitless and stacking support is not available for VXLAN feature on Brocade ICX 7750.
VXLAN configuration considerations
• A {Port, VLAN} pair must have a one-to-one mapping to a VNI.
• One VNI can be carried by a single VXLAN Layer 2 tunnel only.
• Different VNIs can be carried in the same or different Layer 2 tunnels.
• VXLAN encapsulation adds approximately 50 bytes of overhead to the MAC frame, which causes
rejection of the frames because the Maximum Transmission Unit (MTU) on the transport network
cannot accommodate the extra bytes. Therefore, the MTU on the transport network port must be
configured with a value greater than 1550 (1500 + 50) bytes. (1500 is the typical host MTU.)
Configuring VXLAN
To enable VXLAN functionality, you must create a VXLAN Layer 2 tunnel interface and then map the
{Port, VLAN} pairs to the VXLAN VNIs on the Layer 2 tunnel.
1. Enter the interface l2-tunnel tunnel-id command to create the Layer 2 tunnel interface.
2. Enter the l2-tunnel mode vxlan eline command to specify the Layer 2 tunnel mode to be VXLAN.
3. Enter the l2-tunnel source ip-address command to specify the Layer 2 tunnel source address.
Alternatively, you can configure an interface as the Layer 2 tunnel source. To do so, enter the
interface type instead of the IP address to specify the Layer 2 tunnel source address.
4. Enter the l2-tunnel destination ip-address command to specify the Layer 2 tunnel destination
address.
5. Exit the tunnel interface configuration mode and log in to the interface configuration mode with the
interface ethernet command.
6. Enter the vxlan vlan vlan-id vni vni-id l2-tunnel tunnel-id command to map a Port,VLAN pair to the
VNI on a Layer 2 tunnel.
7. (Optional) Enter the show interface l2-tunnel tunnel-id to verify the Layer 2 tunnel interface and
mapping details.
device(config)# interface l2-tunnel 1
device(config-l2-tnif-1)# l2-tunnel mode vxlan eline
device(config-l2-tnif-1)# l2-tunnel source 10.0.0.1
device(config-l2-tnif-1)# l2-tunnel destination 20.0.0.1
device(config-l2-tnif-1)# exit
device# configure terminal
device(config)# interface ethernet 1/1/1
device(config-if-e10000-1/1/1)# vxlan vlan 10 vni 1010 l2-tunnel 1
VXLAN configuration considerations
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