SMC Networks SMC6624M Port Trunking, Viewing port trunks Configuring a static trunk None Group

Optimizing Port Usage Through Traffic Control and Port Trunking

Port Trunking

Port Trunking

Port Status and ConfigurationFeatures

Feature	Default	Menu	CLI	Web
viewing port trunks	n/a	page 6-15	page 6-17	page 6-22
configuring a static trunk	none	page 6-15	page 6-20	—
group
configuring a dynamic LACP	LACP passive	—	page 6-21	—
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

Optimizing Port Usage Through Traffic Control and

Switch 1:	port 1
Ports 1 - 4	port 2
	port 3
configured
	port 4
as a port
	port 5
trunk group.
	port 6
	port 7
	.
	.
	.

Figure 6-3. Conceptual Example of Port Trunking

port 1 port 2 port 3 port 4 port 5 port 6 port 7

.

.

.

Switch 2:

Ports 3 - 6 configured as a port trunk group

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	100 Mbps Links	1000 Mbps Links
2 Ports	Up to 40 Mbps	Up to 400 Mbps	Up to 4000 Mbps
3 Ports	Up to 60 Mbps	Up to 600 Mbps	n/a*
4 Ports	Up to 80 Mbps	Up to 800 Mbps	n/a*

*The SMC6624M offers a maximum of two gigabit links if optional gigabit transceivers are installed.

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