8- and 24-Port Gigabit L2 Managed Power-over-Ethernet (PoE) Switches
724-746-5500 | blackbox.com
120
Port: Port Number: 1–8
Auto- refresh: Refresh the authenticator counters in the web UI automatically.
Refresh: Click on <Refresh> to update the authenticator counters in the web UI.
Clear: Click on <Clear> to clear all authenticator counters in the web UI.
4.13 Trunking Configuration
Use the Port Trunking Configuration to configure the Link Aggregation settings. You can bundle more than one port with the same
speed, full duplex, and the same MAC to be a single logical port. The logical port aggregates these ports’ bandwidth. You can apply
your current Ethernet equipments to build the bandwidth aggregation. For example, if there are three Fast Ethernet ports aggregated
in a logical port, then this logical port has bandwidth that’s three times as high as a single Fast Ethernet port.
The switch supports two kinds of port trunking:
LACP: Ports using Link Aggregation Control Protocol (according to IEEE 802.3ad specification) as their trunking method can choose
their unique LACP GroupID (1–4) to form a logical “trunked port.” The benefit of using LACP is that a port makes an agreement with
its peer port before it becomes a member of a “trunk group” (also called aggregator). LACP is safer than the other trunking method:
static trunk.
The switch LACP does not support the following:
• Link Aggregation across switches
• Aggregation with a non-IEEE 802.3 MAC link
• Half-duplex mode operation
• Aggregate the ports with different data rates
Static Trunk:
Ports using Static Trunk as their trunk method can choose their unique Static GroupID (also 1–4, this Static groupID can
be the same as another LACP groupID) to form a logic “trunked port.” The benefit of using the Static Trunk method is that a port can
immediately become a member of a trunk group without any handshaking with its peer port. This is also a disadvantage because the
peer ports of your static trunk group may not know that they should aggregate together to form a “logical trunked port.” We
recommend using Static Trunk on both ends of a link. Note that low speed links will stay in “not ready” state when using static trunk
to aggregate high speed links.
There are some system restrictions about the port aggregation function on the switch: In the management point of view, the switch
supports a maximum of 8 trunk groups for LACP and an additional 8 trunk groups for Static Trunk. In the system capability view, only
8 “real trunked” groups are supported. An LACP trunk group with more than one ready member portsis a “real trunked” group. An
LACP trunk group with only one or less than one ready member-ports is not a “real trunked” group. Any Static trunk group is a “real
trunked” group.
Per Trunking Group supports a maximum of 4 ready member ports. Some decisions will automatically be made by the system while you
are configuring your trunking ports. Some configuration examples are listed below:
1. 8 ports have already used Static Trunk Group ID 1, the 13th port willing to use the same Static Trunk Group ID will be automatically
set to use the “None” trunking method and its Group ID will change to 0. This means the port won’t aggregate with other ports.
2. 4 ports all use LACP Trunk Group ID 1. At most, 2 ports can aggregate together and transit into the ready state.
3. A port using the “None“ trunking method or Group ID 0 will be automatically set to use the “None” trunking method with Group
ID 0.
4.13.1 Port
Function name: Trunk Port Setting/Status
Function description: Port setting/status is used to configure the trunk property for each port in the switch system.