RuggedCom RS400 Manual Do Utilizador

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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).