CTC Union FRM220-NMC, User Manual, Page: 71 / 182

Appendix A
69
A.2.16.1 Port 1 and Port 2 Trunk Bandwidth 2G
In this mode the fibers are aggregated or 'trunked' to provide 2G bandwidth. The application requires two fiber
links at the same time, but logically they act as one link with up to 2G throughput. This mode can provide up to 1G
throughput for each of the UTP ports at the same time.
A.2.16.2 Port 1 to Port 2 Mirror
The mirror mode provides fiber aggregation or 'trunking'. It uses one or two fiber lines to achieve this feature. The maximum
combined throughput is about 1.5G.
A.2.16.3 Port VLAN (1/3; 2/4)
The single 1000EAS acts like two gigabit media converters in one package. The centrally located converter
may also connect to two different remote locations with 1000EAS-1 at each remote, as shown in the second
graphic above.
A.2.16.4 Port 1 and Port 2 Redundancy
In this mode one fiber is active, while the other is on standby. This creates a 1+1 redundant path protection. If
main fiber is broken, the second fiber will quickly take over the transmissions. The application requires two fiber
links at the same time, but one fiber is in standby.
Fiber
1 1
2
2
3
4
3
4
1000EAS 1000EAS
LAN A LAN B
LAN A'
LAN B'
1 1
2
2
3
4
3
4
1000EAS 1000EAS
Fiber
LAN A LAN B
2Gbps
1 1
2
2
3
4
3
4
1000EAS 1000EAS
Fiber
LAN A LAN B
Fiber redundancy
1 1
2
2
3
4
3
4
1000EAS 1000EAS
Fiber
LAN A LAN B
Fiber
1 1
2
3
4
3
1000EAS 1000EAS-1
LAN A'
LAN B
1
3
1000EAS-1 Fiber
LAN B'
Remote A
Remote B
LAN A