HP ProCurve 2500 Port Trunking, Port Status and ConfigurationFeatures, Figure 6-3.Conceptual Example of Port Trunking

Optimizing Port Usage Through Traffic Control and

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 6-16	page 6-18	page 6-23
configuring a static trunk	none	page 6-16	page 6-21	—
group
configuring a dynamic LACP	LACP passive	—	page 6-22	—
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 backbone 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 2:
Switch 1:	port 1		port 1
Ports 1 - 4	port 2		port 2	Ports 3 - 6
	port 3		port 3
configured				configured
	port 4		port 4
as a port				as a port
	port 5		port 5
trunk group.				trunk group
	port 6		port 6
	port 7		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	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 Switches 2512 and 2524 offer a maximum of two gigabit links if optional gigabit transceivers are installed.

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