RuggedCom RS400 manual Implementing Mstp on a Bridged Network

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5.2.4 Implementing MSTP on a Bridged Network

It is recommended that the configuration of MSTP on a network proceed in the sequence outlined below. Naturally, it is also recommended that network analysis and planning inform the steps of configuring the VLAN and MSTP parameters in particular.

Begin with a set of MSTP-capable Ethernet bridges, and MSTP disabled. For each bridge in the network:

1.Configure and enable RSTP (see sections 5.4.1 and 5.4.2). Note that the Max Hops parameter in the Bridge RSTP Parameters menu is the maximum hop count for MSTP.

2.Create the VLANs that will be mapped to MSTIs (see the sections on VLAN Configuration).

3.Map VLANs to MSTIs (via the VLAN Configuration menus). Note that MSTP need not be enabled in order to map a VLAN to an MSTI. Note also that this mapping must be identical for each bridge that is to belong to the MST region.

4.Configure a Region Identifier and Revision Level. Note that these two items must be identical for each bridge in the MST region (see section 5.4.3).

5.Verify that the Digest field in the MST Region Identifier menu is identical for each bridge in the MST region. If it is not, then the set of mappings from VLANs to MSTIs differs.

6.Configure Bridge Priority per MSTI (see section 5.4.4).

7.Configure Port Cost and Priority per port and per MSTI (see section 5.4.5).

8.Enable MSTP (see section 5.4.1).

Note Static VLANs must be used in an MSTP configuration. GVRP is not supported in this case.

ROS™ v3.5 142 RS400