OS10 Enterprise Edition User Guide Release 10.4.0E(R3)

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VLT domain

A VLT domain includes the VLT peer devices, VLT interconnect, and all port-channels in the VLT that connect to the attached devices. It is also associated with the configuration mode that you must use to assign VLT global parameters.

  • A VLT domain supports two node members. These peer devices appear as a single logical device to network access devices that connect to VLT ports through a port-channel.
  • A VLT domain consists of the two core nodes, interconnect trunk, and LAG members that connect to attached devices.
  • Each VLT domain must have a unique MAC address that you create or that VLT creates automatically.
  • VLAN ID 4094 is reserved as an internal control VLAN for the VLT domain.
  • ARP, IPv6 neighbors, and MAC tables synchronize between the VLT peer nodes.
  • VLT peer devices operate as a separate node with independent control and data planes for devices that attach to non-VLT ports.
  • One node in the VLT domain takes a primary role and the other node takes the secondary role. In a VLT domain with two nodes, the VLT assigns the primary node role to the node with the highest MAC address.
  • In a VLT domain, the peer network devices must run the same OS10 software version.
  • Configure the same VLT domain ID on peer devices. If a VLT domain ID mismatch occurs on VLT peers, the VLTi does not activate.
  • In a VLT domain, VLT peers support connections to network devices that connect to only one peer.

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