HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 144
An Example of Mapping VLANs with the Range Option where all VLANs are Included
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Multiple Instance Spanning-Tree Operation Configuring MSTP On other ProCurve switches, only the VLANs that are present will be included, that is, only VLANs 1, 5, and 7 would be included. The switch will map these VLANs to MSTP Instance 1, which results in a Configuration Digest that is not the same as the Configuration Digest for the switches running this enhancement. (See Figure 4-10 and Figure 4-11) Figure 4-10 shows an example of an MSTP instance configured with the VLAN range option. All the VLANs are included in the instance whether they exist or not. Figure 4-11 shows an example of an MSTP instance configured on another ProCurve switch. Only VLANs 1, 5, and 7 are included in the instance. ProCurve(config)# show spanning-tree mst-config MST Configuration Identifier Information MST Configuration Name: MSTP1 MST Configuration Revision: 1 MST Configuration Digest: 0x51B7EBA6BEED8702D2BA4497D4367517 IST Mapped VLANs : Instance ID Mapped VLANs 1 1-10 Figure 4-10. An Example of Mapping VLANs with the Range Option where all VLANs are Included The Configuration Digest value shown in Figure 4-11 is not the same as in Figure 4-10, indicating that these switches do not operate in the same instance. The Common Spanning Tree (CST) will still have the correct root associations. ProCurve(config)# show spanning-tree mst-config MST Configuration Identifier Information MST Configuration Name: MSTP1 MST Configuration Revision: 1 MST Configuration Digest: 0x89D3ADV471668D6D832F6EC4AA9CF4AA IST Mapped VLANs : Instance ID Mapped VLANs 1 1, 5, 7 Figure 4-11. Example of Mapping VLANs on Other ProCurve Switches 4-45