Waters Network Systems
User’s Manual
Page 73
PS-2126M-POE
point link. If the parameter is configured to Auto, RSTP will use the duplex mode resulting from
the auto-negotiation. If it goes into half-duplex, the port will not transit to Forwarding state. If it
is set as True, the port is treated as point-to-point link by RSTP and unconditionally transited to
Forwarding state. If it is set to False, fast transition to Forwarding state will not occur on this port.
Default:
Auto
M Check:
Migration Check. Forces the port sending out an RSTP BPDU instead of a legacy STP BPDU at
the next transmission. The only benefit of this operation is to make the port quickly get back to
act as an RSTP port. Select
M Check
to send a RSTP BPDU from the port you specified.
Figure 5.38 – STP Port Configuration
5.17
Trunking Configuration
The Port Trunking Configuration is used to configure the settings of Link Aggregation. More than
one port can be bundled with the same speed, full duplex and the same MAC to be a single
logical port. The logical port aggregates the bandwidth of these ports. This means you can
apply your current Ethernet equipment 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 three times as high as a single Fast Ethernet port.
The switch supports two types of port trunking methods:
LACP:
Ports using Link Aggregation Control Protocol (according to IEEE 802.3ad specification) as their
trunking method can choose their unique LACP GroupID (1~3) to form a logic “trunked port”.
The benefit of using LACP is that a port makes an agreement with its peer port before it
becomes a ready 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 followings:
⎯
Link Aggregation across switches
⎯
Aggregation with non-IEEE 802.3 MAC link
