Allied-telesis AT-S86 Manuel d'utilisateur Page 96
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Chapter 10: STP and RSTP
96
port on a bridge is typically based on port speed. The faster the port, the
lower the port cost. The exceptions to this are:
The ports on the root bridge, where all ports have a port cost of 0.
When a port is a member of a trunk, the port cost of each trunk
member is the auto port cost divided by the number of trunk members.
Path cost is simply the sum of the port costs between a bridge and the root
bridge.
Port cost also has an Auto feature. This feature allows spanning tree to
automatically set the port cost according to the speed of the port,
assigning a lower value for higher speeds. Auto is the default setting.
Table 6 lists the STP port costs with Auto. When a port is an active
member of a trunk, the port cost is equal to the auto port cost divided by
the number of ports in the trunk.
Table 6 lists the RSTP port costs with Auto.
Table 7 lists the RSTP port costs with Auto when the port is part of a port
trunk.
You can override Auto and set the port cost manually.
Table 5. STP Auto Port Costs
Port Speed Port Cost
10 Mbps 2,000,000
100 Mbps 200,000
1000 Mbps 20,000
Table 6. RSTP Auto Port Costs
Port Speed Port Cost
10 Mbps 2,000,000
100 Mbps 200,000
1000 Mbps 20,000
Table 7. RSTP Auto Port Trunk Costs
Port Speed Port Cost
10 Mbps 20,000
100 Mbps 20,000
1000 Mbps 2,000
- Management 1
- Software 1
- User’s Guide 1
- Contents 3
- Contacting Allied Telesis 13
- Getting Started 15
- Starting a Management Session 16
- Quitting a Management Session 18
- Basic Switch Parameters 19
- Enabling or Disabling DHCP 22
- Adding an 23
- Administrative 23
- Modifying an 24
- Enabling or 25
- Disabling 25
- Password 25
- Protection 25
- 7. Click Save 27
- Setting Up IP Address Access 28
- Disabling IP 30
- Rebooting the Switch 31
- Port Configuration 33
- Enabling or Disabling a Port 34
- Configuring Bandwidth Control 38
- Chapter 3: Port Configuration 40
- Chapter 4 41
- SNMP Overview 42
- Default SNMP 43
- Community 43
- Chapter 4: SNMP 44
- Setting Up the Host Table 45
- Port Trunking 49
- Port Trunking Overview 50
- Static Port Trunk Guidelines 51
- Creating a Port Trunk 52
- Click OK to save the trunk 53
- Modifying a Trunk 54
- Removing a Trunk 55
- Chapter 5: Port Trunking 56
- Port Mirroring 57
- Port Mirroring Overview 58
- Configuring Port Mirroring 59
- Chapter 6: Port Mirroring 60
- Modifying a Port Mirror 62
- Chapter 7 63
- VLAN Overview 64
- Port-based VLANs 65
- Tagged VLANs 65
- Port-based VLAN Overview 66
- Tagged VLAN Overview 67
- Port VLAN 68
- Identifier 68
- General Rules for 68
- Creating a 68
- Tagged VLAN 68
- Creating a Port-Based VLAN 69
- Modifying a Port 70
- Based VLAN 70
- Viewing a Port 71
- Creating a Tagged VLAN 72
- Modifying a 74
- Viewing a Tagged 75
- Changing a Port’s VLAN Mode 76
- 8. Click Save 77
- Chapter 7: VLANs 78
- Class of Service (CoS) 79
- CoS Overview 80
- Strict Priority Scheduling 82
- Configuring CoS 84
- Chapter 9 89
- IGMP Snooping Overview 90
- Chapter 9: IGMP 92
- STP and RSTP 93
- STP Overview 94
- Path Costs and Port Costs 95
- Port Priority 97
- Point-to-Point and Edge Ports 99
- Mixed STP and 100
- RSTP Networks 100
- Spanning Tree 101
- Chapter 10: STP and RSTP 102
- Security 109
- Bridge Settings 110
- Configuring the 110
- Port Settings 112
- Viewing the Port 114
- Access Control 114
- Setting Up a Dial-In User 116
- Modifying a Dial 117
- Deleting a Dial-in 117
- 6. Click Save 118
- Implementation 119
- Guidelines 119
- Configuring 120
- Chapter 11: Security 122
- Statistics 123
- Statistics Overview 124
- Chapter 12: Statistics 126
- Viewing the Error Groups 129
- Figure 41. Sample Error Chart 130
- Viewing the Historical Status 131
- MAC Addresses 135
- MAC Address Overview 136
- Displaying the 138
- Dynamic MAC 138
- Addresses 138
- Changing the 140
- Aging Time 140
- 5. Click Save 141
- Adding a Static 142
- MAC Address 142
- Chapter 13: MAC Addresses 144
- Downloading New Management 145
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