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Planet WGSW-2840 Инструкция по эксплуатации онлайн [36/104] 65303
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power up. If properly configured, each port stabilizes to the forwarding or blocking state. No packets (except
BPDUs) are forwarded from, or received by, STP enabled ports until the forwarding state is enabled for that port.
2. STP Parameters
STP Operation Levels
The Switch allows for two levels of operation: the switch level and the port level. The switch level forms a spanning
tree consisting of links between one or more switches. The port level constructs a spanning tree consisting of
groups of one or more ports. The STP operates in much the same way for both levels.
NOTICE:
On the switch level, STP calculates the Bridge Identifier for each switch and then sets the
Root Bridge and the Designated Bridges.
On the port level, STP sets the Root Port and the Designated Ports.
The following are the user-configurable STP parameters for the switch level:
Parameter Description Default Value
Bridge Identifier(Not user
configurable
except by setting priority
below)
A combination of the User-set priority and
the switch’s MAC address.
The Bridge Identifier consists of two parts:
a 16-bit priority and a 48-bit Ethernet MAC
address 32768 + MAC
32768 + MAC
Priority
A relative priority for each switch – lower
numbers give a higher priority and a greater
chance of a given switch being elected as
the root bridge
32768
Hello Time
The length of time between broadcasts of
the hello message by the switch
2 seconds
Maximum Age Timer
Measures the age of a received BPDU for a
port and ensures that the BPDU is discarded
when its age exceeds the value of the
maximum age timer.
20 seconds
Forward Delay Timer
The amount time spent by a port in the
learning and listening states waiting for a
BPDU that may return the port to the
blocking state.
15 seconds
The following are the user-configurable STP parameters for the port or port group level:
Variable Description Default Value
Port Priority
A relative priority for each
port –lower numbers give a higher priority
and a greater chance of a given port being
32768
Содержание
- Console management 13 3
- Installation 9 3
- Introduction 3
- Table of contents 3
- Web based management 23 3
- Trouble shooting 92 4
- Appendix a 94 5
- Appendix b 96 5
- How to use this manual 6
- Introduction 6
- Packet contents 6
- Product feature 6
- Product specification 7
- Management function 8
- Management interface 8
- Network standard 8
- Security 802 x port based authentication 8
- Snmp version 8
- Static routing port yes 8
- Support mib 8
- Installation 9
- Led indications 9
- Product description 9
- Product overview 9
- Switch front panel 9
- Desktop installation 10
- Install the switch 10
- Switch rear panel 10
- Rack mounting 11
- Connecting to the switch 13
- Console management 13
- Login in the console interface 13
- Console management 14
- Commands 15
- First level commands 15
- Telnet login 15
- Clear command 16
- Privileged command 16
- Copy command 17
- Disable command 18
- Reboot command 18
- Set command 18
- Show command 21
- About web based management 23
- Preparing for web management 23
- System login 23
- Web based management 23
- Ip configuration 24
- System 24
- Theory 25
- Snmp configuration 26
- Password 28
- Console 29
- System upgrade 29
- Parameters backup recovery 30
- Saving parameters 30
- Load default 31
- Port configuration 31
- Port management 31
- Reboot 31
- Port band restrict 32
- Port statistics 32
- Redundancy 33
- Spanning tree 33
- Lan 2 lan 3 38
- Portcast 19 38
- Portcast 19 portcast 19 38
- Portcast 4 38
- Designated port 39
- Lan 2 lan 3 39
- Root port root port 39
- Spanning tree configuration 39
- Link aggregation 42
- Security 43
- Theory 43
- Vlan configuration 47
- Mac address bind 52
- Mac address filtering 53
- Mac address learning 54
- Mac address aging time 55
- Theory 56
- X port based network access control 56
- X configuration 60
- Configure sample eap md5 authentication 66
- X client configuration 66
- Understand qos 69
- Qos configuration 70
- Igmp snooping 75
- Multicast 75
- Igmp snooping configuration 76
- Igmp port policy 77
- Igmp group policy 79
- Static routing port 82
- Static routing port and multicast group vlan member configue 83
- Vlan configure 84
- Port analysis 85
- Port mirror 85
- Storm control 86
- About ip stacking 87
- Ip stacking 87
- Ip stacking configuration 87
- Master switch configuration 88
- Client switch configuration 89
- Diagnosing led indicators 92
- Faulty or loose cables 92
- Improper network topologies 92
- Incorrect connections 92
- Non standard cables 92
- Trouble shooting 92
- Cabling 93
- Appendix a 94
- Console port pin assignments 94
- Base tx 10base t pin assignments 95
- 802 q vlan multi untagged vlan setting sample 1 96
- Appendix b 96
- Q vlan multi untagged vlan setting sample 1 96
- 802 q vlan multi untagged vlan setting sample 2 99
- Q vlan multi untagged vlan setting sample 2 99
- 802 q vlan multi untagged vlan setting sample 3 102
- Q vlan multi untagged vlan setting sample 3 102
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