Accton Technology 24/48-Port, ES4548D Link Aggregation Commands, Guidelines for Creating Trunks

Chapter 46: Link Aggregation Commands

Ports can be statically grouped into an aggregate link (i.e., trunk) to increase the bandwidth of a network connection or to ensure fault recovery. Or you can use the Link Aggregation Control Protocol (LACP) to automatically negotiate a trunk link between this switch and another network device. For static trunks, the switches have to comply with the Cisco EtherChannel standard. For dynamic trunks, the switches have to comply with LACP. This switch supports up to 24 trunks. For example, a trunk consisting of two 1000 Mbps ports can support an aggregate bandwidth of

4 Gbps when operating at full duplex.

Table 46-1 Link Aggregation Commands

Command	Function	Mode	Page
Manual Configuration Commands
interface port-channel	Configures a trunk and enters interface	GC	45-1
	configuration mode for the trunk
channel-group	Adds a port to a trunk	IC (Ethernet)	46-2
port-channel load-balance	Sets the load-distribution method among ports in	GC	46-3
	aggregated links
Dynamic Configuration Commands
lacp	Configures LACP for the current interface	IC (Ethernet)	46-4
lacp system-priority	Configures a port's LACP system priority	IC (Ethernet)	46-5
lacp admin-key	Configures a port's administration key	IC (Ethernet)	46-6
lacp admin-key	Configures an port channel’s administration key	IC (Port Channel)	46-7
lacp port-priority	Configures a port's LACP port priority	IC (Ethernet)	46-8
Trunk Status Display Commands
show interfaces status	Shows trunk information	NE, PE	45-8
port-channel
show lacp	Shows LACP information	PE	46-8
show port-channel	Displays the current load-balance mode setting	PE	46-11
load-balance

Guidelines for Creating Trunks

General Guidelines –

•Finish configuring port trunks before you connect the corresponding network cables between switches to avoid creating a loop.

•A trunk can have up to 8 ports.

•The ports at both ends of a connection must be configured as trunk ports.

•All ports in a trunk must be configured in an identical manner, including communication mode (i.e., speed and duplex mode), VLAN assignments, and CoS settings.

•Any of the Gigabit ports on the front panel can be trunked together, including ports of different media types.

46-1