Allied Telesis AT-S99 - Manual (Page 36)

Chapter 2: AT-CM and AT-CV Media Converter Line Cards
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AT-CM Media Converter Line Cards
The AT-CM Line Cards are two-port Fast Ethernet and Gigabit Ethernet
media converters that transfer network traffic between twisted pair cable
and fiber optic cable. Most of the line cards have fiber optic ports with fixed
operating distances. However, two of the cards can be customized for
specific distances because they have slots for SFP transceivers.
These line cards can be used as unmanaged devices. They have DIP
switches for setting the operating modes and LEDs on the front panels for
viewing port and card status information. The AT-CM Line Cards support
the five operating modes listed here. For background information, refer to
“Operating Modes” on page 42.
ˆ Link Test
ˆ MissingLink
ˆ Smart MissingLink
ˆ OAM bypass
ˆ OAM visible
The AT-CM Line Cards have these additional features when used together
with the AT-CV5M02 Management Card:
ˆ You can set packet rate limits on the ports of the cards to regulate the
amount of forwarded traffic. You might use this feature to prevent
traffic bottlenecks on your network.
ˆ You can configure the parameter settings on the twisted pair ports by
disabling Auto-Negotiation and setting the speed and duplex mode
manually.
ˆ You can enable and disable ports on the line cards to secure them
from unauthorized access when the cards are not in use or to isolate
portions of a network.
ˆ You can implement the OAM-based features, such as remote peer
management and loopback tests. For further information, refer to
“OAM-based Features” on page 46.