HP 1910 User Manual page 222

Item Description
Set the type of protection to be enabled on the port:
•
Protection Not Set—No protection is enabled on the port.
•
Edged Port, Root Protection, Loop Protection—For more information, see
Set the priority and path cost of the port in the current MSTI.
•
The priority of a port is an important factor in determining whether the port can be
elected as the root port of a device. If all other conditions are the same, the port with
Instance the highest priority will be elected as the root port. On an MSTP-enabled device, a
(Instance ID, port can have different priorities in different MSTIs, and the same port can play
Port Priority, different roles in different MSTIs, so that data of different VLANs can be propagated
Auto Path along different physical paths, implementing per-VLAN load balancing. You can set
Cost, and port priority values based on the actual networking requirements.
Manual Path
•
Path cost is a parameter related to the rate of a port. On an MSTP-enabled device, a
Cost)
port can have different path costs in different MSTIs. Setting appropriate path costs
allows VLAN traffic flows to be forwarded along different physical links, achieving
VLAN-based load balancing. The device can automatically calculate the default
path cost; alternatively, you can also manually configure path cost for ports.
•
Point to Point
Specify whether the port is connected to a point-to-point link:
IMPORTANT:
If a port is configured as connecting to a point-to-point link, the setting takes effect on the
port in all MSTIs. If the physical link to which the port connects is not a point-to-point link
and you force it to be a point-to-point link by configuration, the configuration might incur
a temporary loop.
Advanced
•
Transmit Limit
Configure the maximum number of MSTP packets that can be sent during each Hello
interval.
The larger the transmit limit is, the more network resources will be occupied. HP
recommends that you use the default value.
•
MSTP Mode
Set whether the port migrates to the MSTP mode.
In a switched network, if a port on an MSTP (or RSTP) device connects to a device
running STP, this port will automatically migrate to the STP-compatible mode. After
the device running STP is removed, the port on the MSTP (or RSTP) device might not
be able to migrate automatically to the MSTP (or RSTP) mode, but will remain
operating in the STP-compatible mode. You can set this option to enable the port to
automatically migrate to the MSTP (or RSTP) mode.
Select one or multiple ports on which you want to configure MSTP on the chassis front
panel. If aggregate interfaces are configured on the device, the page displays a list of
Select port(s)
aggregate interfaces below the chassis front panel. You can select aggregate interfaces
from this list.
Auto—Configure the device to automatically detect whether or not the link type of
the port is point-to-point.
Force False—The link type for the port is not point-to-point link.
Force True—The link type for the port is point-to-point link.
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Table 62.