3Com 3C16685 User Manual - page 140
140
G
LOSSARY
line speed
See baud rate.
main port
The port in a resilient link that carries data traffic in normal operating
conditions.
MIB
Management Information Base. Stores a device’s management
characteristics and parameters. MIBs are used by Simple Network
Management Protocol (SNMP) to contain attributes of their managed
systems. The Dual Speed Hub 500 contains its own internal MIB.
multicast
Single packets copied to a specific subset of network addresses.
These addresses are specified in the destination-address field of the
packet.
PING
Packet INternet Groper. A utility that sends out requests (and waits
for a responses) to a device on your network to test whether it can
communicate with that device. You can use PING to ensure that your
network connections are good.
protocol
A set of rules for communication between devices on a network. The
rules dictate format, timing, sequencing and error control.
resilience
Tolerance. For example, the Dual Speed Hub cascaded cables make a
stack of Dual Speed Hub 500 units resilient because you can power
off a unit without it affecting the other units in the stack. You can
also build resilience into your network by having extra equipment
and cabling that carries your traffic if other equipment and cabling
fails. See resilient link.
resilient link
A pair of ports that can be configured so that one will take over data
transmission should the other fail. See also main port and standby
port.