CTC Union FRM220-NMC, User Manual, Page: 72 / 182

Appendix A
70
A.2.16.5 Static 802.1Q VLAN
IEEE 802.1Q, or VLAN (Virtual LAN) Tagging, is a networking standard written by the IEEE 802.1 workgroup
allowing multiple bridged networks to transparently share the same physical network link without leakage of
information between networks.
In the above example, a L2 switch creates two separate VLANs (VID10 and VID20) from two ports that link to
servers A and B. A third port carries the two VLAN IDs to the 1000EAS media converter /switch pair by UTP. The
management uses VID=1. The 1000EAS pair creates a fiber link over a longer distance than could be supported
with UTP. The local side converter requires no additional configuration and passes the tag information
transparently over the fiber link. The remote side requires VLAN configuration. One UTP port (port3) recognizes
and untags VID10 to the client PC-A. The other UTP port, (port4) recognizes and untags VID20 to the client PC-B.
On the return trip, packets are tagged, VID10 for port3 and VID20 for port 4 and returned to the L2 switch and then
to the appropriate servers.
Configuration example, done to remote converter:
1. Return to the main menu on the local unit.
*********************************************
*** CTC UNION TECHNOLOGIES CO., LTD. ***
*** FRM220-1000EAS Ver:3.240 ***
*********************************************
Fiber 1 [Link Up ] [Remote LB: Off ]
Fiber 2 [Link Up ] [Remote LB: Off ]
UTP 3 [Link Up ] [Speed: 100M] [Duplex: Full]
UTP 4 [Link Down ] [Speed: -----] [Duplex: ----]
Remote A Module [1000EAS ]
Remote B Module [1000EAS ]
Port 1 OAM Mode [Active ]
Port 2 OAM Mode [Active ]
Advance Functions [Normal ]
<L> :Local Status and Configuration.
<A> :Remote A Status and Configuration.
<B> :Remote B Status and Configuration.
<M> :SNMP Manager.
<S> :System Configuration.
<ESC>:Logout.