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The possible eld values are:

– Root — Provides the lowest cost path to forward packets to the root device.

– Designated — Indicates the port or LAG through which the designated device is attached to the LAN.

– Alternate — Provides an alternate path to the root device from the root interface.

– Backup — Provides a backup path to the designated port path toward the Spanning Tree leaves. Backup ports occur

only when two ports are connected in a loop by a point-to-point link or when a LAN has two or more connections

Type — Indicates whether the port is a Boundary or Master port. The possible eld values are:

– Boundary Port — Indicates that the port is a Boundary port. A Boundary port attaches MST bridges to LANs in an

outlying region. If the port is a Boundary port, this eld also indicates whether the device on the other side of the link is

working in RSTP or STP mode

– Master Port — Indicates the port is a master port. A Master port provides connectivity from a MSTP region to the

outlying CIST root.

Interface Priority — Denes the Interface priority for the specied instance. The default value is 128.

Path Cost — Indicates the port contribution to the Spanning Tree instance. The range should always be 1-200,000,000.

Port State — Indicates whether the port is enabled for the specic instance. The possible eld values are:

– Enabled — Enables the port for the specic instance.

Remain Hops — Indicates the hops remaining to the next destination.

2. Select the Instance.

3. Modify the Port Priority and Path Cost.

4. Click . The device information is updated.

To add new interface settings for MSTP:

Figure 93: MSTP Interface Settings Page

1. Dene the instance properties elds.

2. Click . The interface settings are added to the

list in the MSTP Interface Settings Page. The device

information is updated.

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