АМАТЕК AN-SGM28P24-400 [129/322] Eaps brief introduction

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9.1 EAPS brief introduction

EAPS is the abbreviation of Ethernet Automatic Protecting Switching。EAPS uses

standard Ethernet and VLAN technology to provide loop topology and loop recovery mechanism。

When a fault occurs in the loop, EAPS has the ability to recover data communication within a

second. The EAPS running is not limited by the number of nodes, and the recovery time of the

loop is not limited by the number of nodes. EAPS does not rely on other devices, that is, EAPS

rings can have devices that do not support the EAPS protocol。

9.2 Basic concepts of EAPS

Here are some of the basic concepts involved in EAPS：

1、EAPS Domain, in a network, a EAPS Domain is running in a single loop. It is a series of

node devices that consist of a single loop, and a EAPS Domain contains one Master Node and one

or more Transit Node。

2、Master Node, a EAPS switch, or EAPS node device, has a EAPS Domain with only one

Master Node。

3、Transit Node, a switch that runs EAPS, or EAPS node device, in a EAPS Domain, other

nodes except Master Node。

4、Primary Port, a port for connecting EAPS node devices in EAPS Domain. A node device

has only one Primary Port connected to this loop in a EAPS Domain。

5、Secondary Port, a port for connecting EAPS node devices in EAPS Domain. A node

device has only one Secondary Port connected to this loop in a EAPS Domain。

6、Control VLAN, control VLAN, responsible for EAPS Domain protocol packet

transmission of VLAN, a EAPS Domain has only one Control VLAN。

7、Protected VLAN, protected VLAN, transfers VLAN of business data in EAPS Domain, a

EAPS Domain must have a Protected VLAN, or more than one Protected VLAN。

9.3 EAPS protocol introduction

A EAPS Domain runs on a EAPS ring. A EAPS Domain contains a Master Node with one or

more Transit Node EAPS; each node contains the same Control VLAN and multiple Protected

VLAN; each EAPS node contains a Primary Port and a Secondary Port in a EAPS Domain, the