C
HAPTER
2
| Network Planning
Application Examples
– 27 –
ES-2010G / ES-2010GP
R
EMOTE
C
ONNECTIONS
WITH
F
IBER
C
ABLE
Fiber optic technology allows for longer cabling than any other media type.
A 1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a
1000BASE-LX (SMF) link up to 10 km, a 1000BASE-LH link up to 80 km,
and a 100BASE-FX (SMF) link up to 20 km. This allows the switches to
serve as a collapsed backbone, providing direct connectivity for a
widespread LAN.
The figure below illustrates the ES-2010GP connecting multiple segments
with fiber cable.
Figure 11: Remote Connections with Fiber Cable
M
AKING
VLAN
C
ONNECTIONS
These switches support VLANs which can be used to organize any group of
network nodes into separate broadcast domains. VLANs confine broadcast
traffic to the originating group, and can eliminate broadcast storms in large
networks. This provides a more secure and cleaner network environment.
VLANs can be based on untagged port groups, or traffic can be explicitly
tagged to identify the VLAN group to which it belongs. Untagged VLANs can
be used for small networks attached to a single switch. However, tagged
VLANs should be used for larger networks, and all the VLANs assigned to
the inter-switch links.
...
...
Headquarters
1000BASE-LX SMF
(10 kilometers)
Remote Switch
10/100/1000 Mbps Segments
1000BASE-SX MMF
(550 meters)
Remote Switch
Server Farm
28
27
28
27
Reset
PWR
POE
DIAG