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Configuring Mapping of Address and Port with Encapsulation (MAP-E)

This example shows you how to configure the MAP-E Border Relay (BR) solution using a next hop-based style of configuration.

To configure MAP-E:

  1. Create service interface on the device with 100g bandwidth support.
  2. Configure the dual stack service interface unit 0.
  3. Configure service interface inside the dual stack domain.
  4. Configure service interface outside the dual stack domain.
  5. Configure the IPv4-facing interface on BR.
  6. Configure the CPE-facing interface on BR.
  7. Configure the MAP-E softwire concentrator and associated parameters.

    When configuring the MAP-E softwire concentrator, take the following into consideration:

    • Possible values for ea-bits-len is 0 through 48.

    • Possible values for v4-prefix-len is 0 through 32.

    • If v4-prefix-len is 0 then ea-bits-len must be non-zero, and vice versa.

    • It is possible that ea-bits-len is equal to 0, but psid-len is non-zero.

    • If the sum of v4-prefix-len and ea-bits-len is less than 32, then the psid-len must be equal to the difference between 32 and the sum total of v4-prefix-len and ea-bits-len.

    • The MAP-E IPv4 and IPv6 prefix must be unique per softwire concentrator.

    • MAP-E PSID offset has a default value of 4, and MAP-E tunnel maximum transmission unit (MTU) has a default value of 9192.

  8. Configure a softwire rule to specify the direction of traffic to be tunneled and the MAP-E softwire concentrator to be used.
  9. Configure the service set for MAP-E.

For example: