HP 6120 Port Status and Configuration Features, Figure 11-1.Conceptual Example of Port Trunking

Port Trunking

Overview

Overview

This chapter describes creating and modifying port trunk groups. This includes non-protocol trunks and LACP (802.3ad) trunks.

Port Status and Configuration Features

Feature	Default	Menu	CLI	Web
viewing port trunks	n/a	page 11-9	page 11-11	page 11-17
configuring a static trunk	none	page 11-9	page 11-15	—
group
configuring a dynamic LACP	disabled	—	page 11-15	—
trunk group

Port trunking allows you to assign up to eight 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 eight 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:

Ports c1 - c3, c5 - c7, and c9 - c10 configured as a port trunk group.

port c1	port 1
port c2	port 2
port c3	port 3
port c4	port 4
port c5	port 5
port c6	port 6
port c7	port 7
port c8	port 8
port c9	port 9
port c10	port 10
…	port 11
port n	port 12
	…
	port n

Switch 2:

Ports a1, a3 - a4, a6 - a8, a11, and a12 configured as a port trunk group

Figure 11-1. Conceptual Example of Port Trunking

With full-duplex operation in a eight-port trunk group, trunking enables the following bandwidth capabilities:

11-2