Table of Contents
Advertisement
3 Media Converter Functions
3.1 Line Rate Conversion
The device supports the following data conversions between fiber cable and twisted-pair Cat.5 (copper)
cable:
The data line rate on twisted-pair copper segment depends on the link speed finally established with
the link partner. However, the line rate can be fixed at one specific line rate by setting UTP
configuration DIP switches (SW1 ~ SW3).
The data line rate on fiber segment is fixed at 1000Mbps by factory default. However, the line rate
configuration, called auto-detection mode can be set at line rate that matches the type of the installed
SFP fiber transceiver by setting SFP configuration DIP switch (SW4).
3.2 Packet Forwarding
The packet forwarding method between twisted-pair port and SFP fiber port of the device depends on
the configured data line rates on both ports. Refer to the following table:
Configuration
Forwarding technology used
Advantage
Jumbo frame forwarding
Performance
Forwarded packet types
Flow control
Packet storm protection
UTP & SFP at same line rate
Direct conversion
The shortest latency
Support
Full wire speed
All (Transparently)
Disabled
No
16
UTP & SFP at different line rates
Store-and-forward
Bad packets are filtered
Support
Full wire speed
All except PAUSE frame
Enabled
Enabled for
Broadcast storm
Multicast storm
ICMP storm
ARP storm
Advertisement
Table of Contents
