Transition Networks SISPM1040-182D user manual Port Trunk, Aggregator setting

Models: SISPM1040-182D

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Transition Networks

SISPM1040-182D

6.15Port Trunk

Port trunking is the combination of several ports or network cables to expand the connection speed beyond the limits of any one single port or network cable. Link Aggregation Control Protocol (LACP), which is a protocol running on layer 2, provides a standardized means in accordance with IEEE 802.3ad to bundle several physical ports together to form a single logical channel. All the ports within the logical channel or so-called logical aggregator work at the same connection speed and LACP operation requires full-duplex mode.

6.15.1 Aggregator setting

„System Priority: A value which is used to identify the active LACP. The switch with the lowest value has the highest priority and is selected as the active LACP peer of the trunk group.

„Group ID: There are 13 trunk groups to be selected. Assign the "Group ID" to the trunk group.

„LACP: When enabled, the trunk group is using LACP. A port which joins an LACP trunk group has to make an agreement with its member ports first. Please notice that a trunk group, including member ports split between two switches, has to enable the LACP function of the two switches. When disabled, the trunk group is a static trunk group. The advantage of having the LACP disabled is that a port joins the trunk group without any handshaking with its member ports; but member ports won’t know that they should be aggregated together to form a logic trunk group.

„Work ports: This column field allows the user to type in the total number of active port up to four. With LACP static trunk group, e.g. you assign four ports to be the members of a trunk group whose work ports column field is set as two; the exceed ports are standby/redundant ports and can be aggregated if working ports fail. If it is a static trunk group (non-LACP), the number of work ports must equal the total number of group member ports.

„Select the ports to join the trunk group. The system allows a maximum of four

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Page 72
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Transition Networks SISPM1040-182D user manual Port Trunk, Aggregator setting