柔性以太网

IETF一篇草案

关于柔性以太网的，

Framework and Requirements for GMPLS-based Control of Flexible Ethernet
                                Network

主要注意的如下：

数据面

      Bonding of Ethernet PHYs, e.g., supporting a 200G MAC over two
      bonded 100GBASE-R PHYs.

      Sub-rates of Ethernet PHYs, e.g., supporting a 50G MAC over a
      100GBASE-R PHY.

      Channelization within a PHY or a group of bonded PHYs, e.g,
      support a 150G and two 25G MACs over two bonded 100GBASE-R PHYs.

从速率来看，有5G的特征了。

                     +---+                      +---+
                     | B |                      | E |
                     +---+                      +---+
                         \                     /
                          \                   /
                          +---+          +---+
                          | C |----------| D |
                          +---+          +---+

                       Figure 1: FlexE Layer Network

  其中， B and E   are FlexE capable nodes, C and D are OTN ODUflex/ODU4 capable nodes.

文中有5G 级别的slot粒度，小

包括了Flex LSP的信令和基础路由信息的分发内容。