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Link aggregation is an inexpensive way to set up a high-speed backbone network that transfers much more data than any one single port or device can deliver without replacing everything and buying new hardware.

For most backbone installations, it is common to install more cabling or fiber optic pairs than initially necessary, even if there is no immediate need for the additional cabling. This action is taken because labor costs are higher than the cost of the cable and running extra cable reduces future labor costs if networking needs changes. Link aggregation can allow the use of these extra cables to increase backbone speeds with little or no extra cost if ports are available.

This Managed switch supports 2 link aggregation modes: static Port Trunk and dynamic Link Aggregation Control Protocol (LACP) using the IEEE 802.3ad standard. These allow several devices to communicate simultaneously at their full single-port speed while not allowing any one single device to occupy all available backbone capacities.

Prompt Command & Parameter Description

Console(config-aggr)#

add <port_list> <aggr_id> The Managed Switch allows users to create 13 trunking groups. Each group consists of 2 to 16 links (ports).

<port_list>: 1~26

<aggr_id>:1~13

For example:

Console(config-aggr)#add 1-4,10-15,19 10 delete <aggr_id> Delete an aggregation ID.

<aggr_id>:1~13

For example:

Console(config-aggr)#delete 10 mode <smac | dmac> <enable |

disable>

Enable or disable packets according to source and destination MAC address

For example:

Console(config-aggr)#mode dmac enable

Console(config-aggr-lacp)#

state <port_list> <enable | disable>

This Managed Switch allows users to indicate which port(s) are enabled to use LACP.

For example:

Console(config-aggr-lacp)# state 1-4,10-15,18,19 enable

key <port_list> <key>

Specify the key value to the selected ports.

<port_list>: 1~26

<key>: The range of key value is from 0 to 255.

For example:

Console(config-aggr-lacp)# key 1-4,10-15,18,19 200

role <port_list> <active | passive>

To set up whether LACP ports are active or passive.

<port_list>: 1~26

<active | passive>: Active LACP ports are capable of processing and sending LACP control frames. This allows LACP compliant devices to negotiate the aggregated link so that the group may be changed dynamically as required. In order to utilize the ability to change an aggregated port group, that is, to add or remove ports from the group, at least one of the participating devices must designate LACP ports as active. Both devices must support LACP.

LACP ports that are designated as passive cannot initially send LACP control frames. In order to allow the linked port group to negotiate adjustments and make changes dynamically, one end of the connection must have “active” LACP ports.

For example:

Console(config-aggr-lacp)# role 1-4,10-15,18,19 active

2.6.2 CFM command mode

Prompt Command & Parameter Description

Console(config-cfm-dom)#

add <domain_name> <level> <mhf> This allows the user to register a CFM maintenance domain.

<domain_name>: up to 22 characters.

<level>: 0~7

<mhf>: Specify MHF as “default” “explicit” or

“none”.

Default: MHFs can be created for this VID on any Bridge Port through which the VID can pass.

Explicit: MHFs can be created on CFM VLAN member port and only if there is a MEP at the lower active MD-level on the port.

None: No MHFs can be created for this VID.

For example:

Console(config-cfm-dom)#add mydomain 7 none

delete <domain_name> To delete a registered domain name.

For example:

Console(config-cfm-dom)#delete mydomain

Console(config-cfm-dom_domain name)#

level <level> To specify maintenance domain level for the registered domain name.

<level>: 0~7

For example:

Console(config-cfm-dom_mymy)#level 7 mhf <default | explicit | none> To specify MHF for the registered domain

name.

<default | explicit | none>: Three options are available for this function.

Default: MHFs can be created for this VID on any Bridge Port through which the VID can pass.

Explicit: MHFs can be created on CFM VLAN member port and only if there is a MEP at the lower active MD-level on the port.

None: No MHFs can be created for this VID.

For example:

Console(config-cfm-dom_mymy)#mhf none

NOTE: If you would like to edit the settings of your new domain, you can enter the command domain domain name under the

Console(config-cfm)#.

For example:

If you want to edit settings of the account

“mydomain”, you can use the following commands to enter the editing mode.

Console(config-cfm)#domain mydomain

This allows users to register a maintenance association.

<assoc_name>: up to 20 characters.

<vlan_id>: 0 (None);1~4094

<ccm_interval>: 0:no 1:1s 2:10s 3:1m 4:10m

<mhf>: Four options are available for this function.

Defer: The control of MHF creation is deferred to the corresponding variable in the enclosing Maintenance Domain.

Default: MHFs can be created for this VID on any Bridge Port through which the VID can pass.

Explicit: MHFs can be created on CFM VLAN member port, and only if there is a MEP at the

lower active MD-level on the port.

None: No MHFs can be created for this VID.

For example:

Console(config-cfm-assoc)#add myassoc 1 4 none

loopback <target mepid |

mac_address>[-n number(2-100)]

[-s size(1-255)] [-p priority(0-7)]

[-d drop_eligible(true | false)]

To configure loopback test settings.

For Example:

Console(cfm)#loopback domain assoc 00:01:02:03:04:05 -n 100 -s 255 -p 3 -d true linktrace <target mepid |

mac_address> [-f flag(fdbonly | none)][-h hop_count(1-255)]

To configure linktrace settings.

For Example:

Console(cfm)# linktrace domain assoc 00:01:02:03:04:05 -f none -h 100 de-measure <target mepid |

mac_address> [-n number(2-100)]

[-p priority(0-7)]

To configure delay measurement settings.

For Example:

Console(cfm)#de-measure domain assoc 00:01:02:03:04:05 -n 100 -p 0