The GOGUA enables the GE transmission on the A interface.
The GOGUA performs the following functions:
Provides two GE optical ports, which are used for IP transmission
Provides Automatic Protection Switching (APS) function to enable switchover between the optical channel links of the active and standby boards.
Supports virtual local area network (VLAN)
Supports the bidirectional forwarding detection (BFD) of a single hop link