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Chapter 13 Spanning Tree Protocol
XGS-4526/4528F/4728F User’s Guide
151
With MSTP, VLANs 1 and 2 are mapped to different spanning trees in the network.
Thus traffic from the two VLANs travel on different paths. The following figure
shows the network example using MSTP.
Figure 58
MSTP Network Example
13.1.5.2 MST Region
An MST region is a logical grouping of multiple network devices that appears as a
single device to the rest of the network. Each MSTP-enabled device can only
belong to one MST region. When BPDUs enter an MST region, external path cost
(of paths outside this region) is increased by one. Internal path cost (of paths
within this region) is increased by one when BPDUs traverse the region.
Devices that belong to the same MST region are configured to have the same
MSTP configuration identification settings. These include the following parameters:
• Name of the MST region
• Revision level as the unique number for the MST region
• VLAN-to-MST Instance mapping
13.1.5.3 MST Instance
An MST Instance (MSTI) is a spanning tree instance. VLANs can be configured to
run on a specific MSTI. Each created MSTI is identified by a unique number
(known as an MST ID) known internally to a region. Thus an MSTI does not span
across MST regions.
A
B
VLAN 1
VLAN 2
Содержание XGS-4528F
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Страница 8: ...Safety Warnings XGS 4526 4528F 4728F User s Guide 8...
Страница 24: ...Table of Contents XGS 4526 4528F 4728F User s Guide 24...
Страница 25: ...25 PART I User s Guide...
Страница 26: ...26...
Страница 32: ...Chapter 1 Getting to Know Your Switch XGS 4526 4528F 4728F User s Guide 32...
Страница 36: ...Chapter 2 Hardware Installation and Connection XGS 4526 4528F 4728F User s Guide 36...
Страница 93: ...93 PART II Technical Reference...
Страница 94: ...94...
Страница 100: ...Chapter 7 System Status and Port Statistics XGS 4526 4528F 4728F User s Guide 100...
Страница 116: ...Chapter 8 Basic Setting XGS 4526 4528F 4728F User s Guide 116...
Страница 136: ...Chapter 9 VLAN XGS 4526 4528F 4728F User s Guide 136...
Страница 140: ...Chapter 10 Static MAC Forward Setup XGS 4526 4528F 4728F User s Guide 140...
Страница 172: ...Chapter 14 Bandwidth Control XGS 4526 4528F 4728F User s Guide 172...
Страница 186: ...Chapter 17 Link Aggregation XGS 4526 4528F 4728F User s Guide 186...
Страница 196: ...Chapter 18 Port Authentication XGS 4526 4528F 4728F User s Guide 196...
Страница 214: ...Chapter 21 Policy Rule XGS 4526 4528F 4728F User s Guide 214...
Страница 258: ...Chapter 25 AAA XGS 4526 4528F 4728F User s Guide 258...
Страница 282: ...Chapter 26 IP Source Guard XGS 4526 4528F 4728F User s Guide 282...
Страница 314: ...Chapter 32 Error Disable XGS 4526 4528F 4728F User s Guide 314...
Страница 318: ...Chapter 33 Private VLAN XGS 4526 4528F 4728F User s Guide 318...
Страница 322: ...Chapter 34 Static Route XGS 4526 4528F 4728F User s Guide 322...
Страница 330: ...Chapter 36 RIP XGS 4526 4528F 4728F User s Guide 330...
Страница 386: ...Chapter 43 ARP Learning XGS 4526 4528F 4728F User s Guide 386...
Страница 396: ...Chapter 45 Maintenance XGS 4526 4528F 4728F User s Guide 396...
Страница 442: ...Chapter 49 Cluster Management XGS 4526 4528F 4728F User s Guide 442...
Страница 446: ...Chapter 50 MAC Table XGS 4526 4528F 4728F User s Guide 446...
Страница 450: ...Chapter 51 IP Table XGS 4526 4528F 4728F User s Guide 450...
Страница 454: ...Chapter 53 Routing Table XGS 4526 4528F 4728F User s Guide 454...
Страница 462: ...Chapter 55 Troubleshooting XGS 4526 4528F 4728F User s Guide 462...
Страница 472: ...Chapter 56 Product Specifications XGS 4526 4528F 4728F User s Guide 472...
Страница 480: ...Appendix B Legal Information XGS 4526 4528F 4728F User s Guide 480...