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Fabric Addressing Policy

Enable IPv6 Applications

CAUTION:

After IPv6 has been enabled in a blueprint, it cannot be disabled. Although, you could use Time Voyager to rollback to a revision before IPv6 was enabled.

Enabling support for IPv6 virtual networks on EVPN L2 deployments or L3 deployments adds resource requirements and device configurations. This includes IPv6 loopback addresses on leafs and spines, IPv6 addresses for MLAG SVI subnets and IPv6 addresses for leaf L3 peer links. The following caveats apply:

  • This feature does not include IPv6 support in the fabric.
  • IPv6 support is not available on non-EVPN L2 networks.
  • IPv6 support is not available on 5-stage Clos networks.
  • When IPv6 is enabled on EVPN L2 deployments, security policy functionality is not available.
  1. From the blueprint, navigate to Staged > Policies > Fabric Addressing Policy and click Modify Settings.
  2. Click the toggle on to enable IPv6 applications.
  3. Click Save Changes.

Assign the required IPv6 IP addresses. For information about IPv6 configuration for Virtual Networks, see Virtual Networks documentation.

ESI MAC MSB

CAUTION:

Updating the Most Significant Byte (MSB) value regenerates all existing ESI MACs in the blueprint. We recommend that you leave the default value as is.

ESI MAC addresses are internally auto-generated using Most Significant Byte (MSB) values (default: 2). To ensure that multicast MACs are not generated, it must be an even number (up to 254). Config for the ESI value is rendered as 10 octets. The first octet is zero (0), the second octet is the MSB value. Six (6) octets after the first octet are significant and used as the LACP system-id. The example below is of a rendered ESI value and its respective LACP system id:

  1. To change the ESI MAC MSB value from the blueprint, navigate to Staged > Policies > Fabric Addressing Policy and click Modify Settings.
  2. Make your changes, then click Save Changes.