Port Trunking - SMC Networks SMC6624M Management Manual

Optimizing Port Usage Through Traffic Control and Port Trunking

Port Trunking

Port Status and ConfigurationFeatures
Feature
viewing port trunks
configuring a static trunk
group
configuring a dynamic LACP
trunk group
Port trunking allows you to assign up to four physical links to one logical link
(trunk) that functions as a single, higher-speed link providing dramatically
increased bandwidth. This capability applies to connections between back-
bone devices as well as to connections in other network areas where traffic
bottlenecks exist. A trunk group is a set of up to four ports configured as
members of the same port trunk. Note that the ports in a trunk group do not
have to be consecutive. For example:
The multiple physical links in a trunk behave as one logical link
Switch 1:
port 1
port 2
Ports 1 - 4
port 3
configured
port 4
as a port
port 5
trunk group.
port 6
port 7
.
.
.
Figure 6-3. Conceptual Example of Port Trunking
With full-duplex operation in a four-port trunk group, trunking enables the
following bandwidth capabilities:
Table 6-2. Bandwidth Capacity for Trunk Groups Configured for Full-Duplex
10 Mbps Links
2 Ports Up to 40 Mbps
3 Ports Up to 60 Mbps
4 Ports Up to 80 Mbps
*
The SMC6624M offers a maximum of two gigabit links if optional gigabit modules are installed.
Default Menu
n/a page 6-15
none page 6-15
LACP passive —
100 Mbps Links
Up to 400 Mbps
Up to 600 Mbps
Up to 800 Mbps
Port Trunking
CLI Web
page 6-17 page 6-22
page 6-20 —
page 6-21 —
Switch 2:
port 1
port 2
Ports 3 - 6
port 3
configured
port 4
as a port
port 5
trunk group
port 6
port 7
.
.
.
1000 Mbps Links
Up to 4000 Mbps
n/a*
n/a*
6-9