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Configuration Guide - VXLAN

CloudEngine 12800 and 12800E V200R003C00

This document describes the configurations of VXLAN.
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Configuring VLAN Hand-off

Configuring VLAN Hand-off

VLAN hand-off can be configured to enable communication between VMs in different DCs.

Context

As shown in Figure 10-2, BGP EVPN is configured to establish VXLAN tunnels in both DC A and DC B so that the VMs deployed in each DC can communicate with each other. Through Layer 2 sub-interfaces, Leaf 2 accesses DCI-VTEP 1 and Leaf 3 accesses DCI-VTEP 2. EVPN is configured to establish a VXLAN tunnel between DCI-VTEP 1 and DCI-VTEP 2 so that the VMs can communicate across DCs. Leaf 2 and Leaf 3 decapsulate the VXLAN packets they receive from DCs and send them to a DCI-VTEP. The DCI-VTEP receives these packets, re-encapsulates them into VXLAN packets, and then sends them to the peer DCI-VTEP. This process allows VXLAN tunnels to provide end-to-end bearing for inter-DC packets and ensures that the VMs in different DCs can communicate with each other.

Figure 10-2 Configuring VLAN hand-off

Procedure

  1. Create a VXLAN tunnel between Leaf 1 and Leaf 2, Leaf 3 and Leaf 4, see the following tasks:
    1. Configuring a VXLAN Service Access Point
    2. Configuring a VXLAN Tunnel
  2. Create a VXLAN tunnel between DCI-VTEP 1 and DCI-VTEP 2, see the following tasks:
    1. Configuring a VXLAN Service Access Point
    2. Configuring a VXLAN Tunnel
  3. Run the encapsulation { dot1q [ vid ce-vid ] | default | untag | qinq [ vid pe-vid ce-vid ce-vid ] } or encapsulation qinq vid low-pe-vid [ to high-pe-vid ] ce-vid low-ce-vid [ to high-ce-vid ] command on Layer 2 sub-interfaces connecting Leaf 2 to DCI-VTEP 1 and Layer 2 sub-interfaces connecting Leaf 3 to DCI-VTEP 2 to allow the sub-interfaces to permit packets.
  4. Run the bridge-domain bd-id command on Layer 2 sub-interfaces connecting Leaf 2 to DCI-VTEP 1 and Layer 2 sub-interfaces connecting Leaf 3 to DCI-VTEP 2.
  5. Run the commit command to commit the configuration.
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Updated: 2019-05-05

Document ID: EDOC1100004207

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