Moxa PM-7200-4MST-FL [30/36] Stp example
![Moxa PM-7200-4MST-FL [30/36] Stp example](/views2/1196347/page30/bg1e.png)
Communication Redundancy STP/RSTP/MSTP
4-5
STP Example
The LAN shown in the following figure has three segments, with adjacent segments connected using two
possible links. The various STP factors, such as Cost, Root Port, Designated Bridge Port, and Blocked Port are
shown in the figure.
• Bridge A has been selected as the Root Bridge, since it was determined to have the lowest Bridge Identifier
on the network.
• Since Bridge A is the Root Bridge, it is also the Designated Bridge for LAN segment 1. Port 1 on Bridge A is
selected as the Designated Bridge Port for LAN Segment 1.
• Ports 1 of Bridges B, C, X, and Y are all Root Ports since they are nearest to the Root Bridge, and therefore
have the most efficient path.
• Bridges B and X offer the same Root Path Cost for LAN segment 2. However, Bridge B was selected as the
Designated Bridge for that segment since it has a lower Bridge Identifier. Port 2 on Bridge B is selected as
the Designated Bridge Port for LAN Segment 2.
• Bridge C is the Designated Bridge for LAN segment 3, because it has the lowest Root Path Cost for LAN
Segment 3:
The route through bridges C and B costs 200 (C to B=100, B to A=100)
The route through bridges Y and B costs 300 (Y to B=200, B to A=100)
• The Designated Bridge Port for LAN Segment 3 is port 2 on bridge C.
Содержание
- User s manual p.1
- Communication redundancy p.1
- Www moxa com product p.1
- Fourth edition march 2015 p.1
- Trademarks p.2
- Technical support contact information p.2
- Disclaimer p.2
- Copyright notice p.2
- Communication redundancy p.2
- Www moxa com support p.2
- User s manual p.2
- Table of contents p.3
- Redundancy p.4
- Introduction to communication p.4
- Gigabit ethernet redundant ring capability 50 ms p.5
- Communication redundancy introduction to communication redundancy p.5
- Turbo ring p.6
- When the number of switches in the turbo ring is even p.7
- The turbo ring concept p.7
- Setting up turbo ring or turbo ring v2 p.7
- Determining the redundant path of a turbo ring ring p.7
- Communication redundancy turbo ring p.7
- Determining the redundant path of a turbo ring v2 ring p.8
- Communication redundancy turbo ring p.8
- Attention p.8
- When the number of switches in the turbo ring is odd p.8
- Ring coupling configuration p.8
- Ring coupling for a turbo ring v2 ring p.9
- Ring coupling for a turbo ring ring p.9
- Communication redundancy turbo ring p.9
- Attention p.9
- Turbo ring v2 p.10
- Dynamic ring coupling drc configuration applies only to p.10
- Dual ring for a turbo ring v2 ring p.11
- Dual ring configuration applies only to turbo ring v2 p.11
- Communication redundancy turbo ring p.11
- Attention p.11
- Dual homing configuration applies only to turbo ring v2 p.12
- Configuring turbo ring and turbo ring v2 p.12
- Configuring turbo ring p.12
- Communication redundancy turbo ring p.12
- Explanation of settings items p.13
- Explanation of current status items p.13
- Communication redundancy turbo ring p.13
- Communication redundancy turbo ring p.14
- Explanation of current status items p.15
- Configuring turbo ring v2 p.15
- Communication redundancy turbo ring p.15
- Explanation of settings items p.16
- Communication redundancy turbo ring p.16
- Communication redundancy turbo ring p.17
- Communication redundancy turbo ring p.18
- Explanation of ring status items p.19
- Configuring turbo ring v2 with dynamic ring coupling p.19
- Communication redundancy turbo ring p.19
- Explanation of drc status items p.20
- Communication redundancy turbo ring p.20
- Explanation of ring settings items p.20
- Turbo chain p.21
- The turbo chain concept p.22
- Setting up turbo chain p.22
- Communication redundancy turbo chain p.22
- Tail switch configuration p.23
- Member switch configuration p.23
- Head switch configuration p.23
- Explanation of current status items p.23
- Configuring turbo chain p.23
- Communication redundancy turbo chain p.23
- Explanation of settings items p.24
- Communication redundancy turbo chain p.24
- Communication redundancy turbo chain p.25
- Stp rstp mstp p.26
- Communication redundancy stp rstp mstp p.27
- What is stp p.27
- The stp rstp mstp concept p.27
- Stp requirements p.28
- How stp works p.28
- Communication redundancy stp rstp mstp p.28
- Stp reconfiguration p.29
- Stp configuration p.29
- Stp calculation p.29
- Differences between stp rstp and mstp p.29
- Communication redundancy stp rstp mstp p.29
- Stp example p.30
- Communication redundancy stp rstp mstp p.30
- Using stp on a network with multiple vlans p.31
- Configuring stp rstp p.31
- Communication redundancy stp rstp mstp p.31
- Communication redundancy stp rstp mstp p.32
- Configuring mstp p.33
- Communication redundancy stp rstp mstp p.33
- Communication redundancy stp rstp mstp p.34
- Communication redundancy stp rstp mstp p.35
- Configuration limits of stp rstp p.36
- Communication redundancy stp rstp mstp p.36
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