Filter
Top Products
Cajun M770 Manager User’s Guide 49
Port Mode The operational mode of the port or ports on the
module. Not all modules support all modes. Both
sides of the link must be in the same mode. Flow
Control and ISL (Interswitch Link) are
recommended for backbone links with Lucent
Technologies’ equipment. Note that the Port Speed
field will be insensitive if the Use Switches field is
set to ON.
The components which make up the mode are:
•
Half Duplex (HDX)
- The port operates in Half
Duplex.
•
Full Duplex (FDX)
-The port operates in Full
Duplex and doubles its speed. No repeaters are
allowed in the path.
•
Flow Control (FC)
- Flow Control is a
proprietary mechanism that prevents packet loss
on the link due to congestion in the Full Duplex
mode.
•
Interswitch Link (ISL)
- Interswitch Link is a
proprietary mechanism to tag packets with
VLAN and priority information across the
backbone. This allows two Lucent devices to act
as a single logical entity.
The possible modes are:
•
Half Duplex (HDX)
•
Full Duplex (FDX)
•
Full Duplex and Flow Control (FDX+FC)
•
Full Duplex and Interswitch Link
(FDX+ISL)
•
Full Duplex, Flow Control, and Interswitch
Link (FDX+FC+ISL)
Port Speed The Ethernet speed of the port. Port speed can be
either Ethernet (10 Mbps), Fast Ethernet (100
Mbps), or Gigabit Ethernet (1000 Mbps). Some
units have
10BaseT/100BaseTX ports, where each port can
work in either 10Mbps or 100Mbps.
Field Name Description