MRV Communications MS 104, Руководство пользователя

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MS 104/5
ML46758, Rev. 01
June 2002
•
Auto-Configuration – Each 10/100Base-TX port can be connected to an
Ethernet MDI or MDI-X port with a straight or cross-over cable since the
port automatically configures itself to suit the cable type and co-port
interface.
•
Filtering/Forwarding Database (FDB) – Current map of connected
stations (identified by their MAC address) to ports. The map is dynamically
updated and can maintain as many as 1024 MAC addresses.
•
Auto-Learning – Automatic addition of MAC addresses of new stations to
FDB.
•
Auto-Aging – Clearance of MAC address of station in MS 104/5 FDB if
not accessed for 5 minutes.
•
VLAN Support – Switching of packets of length up to 1536 bytes.
•
Broadcast Storms Prevention – Prevention of broadcast storms
resulting from streaming or over-jabbering stations.
•
Fiberoptic Cabling – Connectivity of single-fiber singlemode cables and
dual fiber singlemode or multimode cables.
•
VBC – Virtual Broadcasting Restriction. Port P1 can send and receive
broadcast and unicast packets to/from the other ports (P2, P3, etc.).
However, the other ports (P2, P3, etc.) cannot send and receive broadcast
packets to each other; they can only send and receive unicast packets to
each other.
Optional
•
Packet Prioritization – Assignment of high or low processing priority to a
packet on the basis of Port, VLAN, or ToS.
•
Flow Control – Forcing of the transmitting station to temporarily back off
when the global memory of the MS 104/5 becomes saturated. This feature
prevents packet loss. It is applicable to ports that operate in
full -duplex
mode. It can be activated for each port individually.
•
Backpressure – Forcing of transmitting station to temporarily back off
when the global memory of the MS 104/5 becomes saturated. This feature
prevents packet loss. It is applicable to ports that operate in
half -duplex
mode. It can be activated for each port individually.
•
No Aging – Prevention of clearance of MAC addresses of stations in
MS 104/5 FDB.
•
VBC – Virtual Broadcasting Restriction. Each port can be enabled or
disabled to send/receive broadcast packets from each of the other ports
individually. However, unicast packets can be sent between
any two ports.
•
Port Isolation – Each port can be isolated
2
from or grouped
3
with each of
the other ports individually.
For example, port P1 can be grouped with all the other ports while the
other ports are isolated from each other.
2
disabled to send/receive broadcast and unicast packets.
3
enabled to send/receive broadcast and unicast packets.
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