LevelOne GTL-2881, User Manual

Page: 128 / 706

Chapter 4
| Interface Configuration
Trunk Configuration
– 128 –
Web Interface
To test the cable attached to a port:
1.
Click Interface, Port, Cable Test.
2.
Click Test for any port to start the cable test.
Figure 47: Performing Cable Tests
Trunk Configuration
This section describes how to configure static and dynamic trunks.
You can create multiple links between devices that work as one virtual, aggregate
link. A port trunk offers a dramatic increase in bandwidth for network segments
where bottlenecks exist, as well as providing a fault-tolerant link between two
devices. You can create up to 16 trunks at a time on the switch, or up to 32 across
the stack.
The switch supports both static trunking and dynamic Link Aggregation Control
Protocol (LACP). Static trunks have to be manually configured at both ends of the
link, and the switches must comply with the Cisco EtherChannel standard. On the
other hand, LACP configured ports can automatically negotiate a trunked link with
LACP-configured ports on another device. You can configure any number of ports
on the switch as LACP, as long as they are not already configured as part of a static
trunk. If ports on another device are also configured as LACP, the switch and the
other device will negotiate a trunk link between them. If an LACP trunk consists of
more than eight ports, all other ports will be placed in standby mode. Should one
link in the trunk fail, one of the standby ports will automatically be activated to
replace it.