MAP-T/MAP-E Packet Processing

IPv6 single-stack is deployed on networks within a MAP domain. Service traffic sent by IPv6 terminals is carried over native IPv6.

To carry service traffic of IPv4 terminals, an IPv6 tunnel is established between a MAP-CE and a MAP-BR or between MAP-CEs. IPv4 packets can be encapsulated in either MPA-E or MAP-T mode:
  • MAP-T: a translation mode that translates an IPv4 header into an IPv6 header. Packets contain only an IPv6 header.
  • MAP-E: an encapsulation mode that adds an IPv6 header into each IPv4 packet. The IPv6 header is outer, and the IPv4 header is inner.
Figure 1 Basic MAP-T/MAP-E architecture

MAP-T data processing

Figure 2 MAP-T Data Processing Flowchart

MAP-E data processing

Figure 3 MAP-E Data Processing Flowchart
Parent Topic: Understanding MAP-T/MAP-E
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
< Previous topic Next topic >