
C
HAPTER
8
| Spanning Tree Algorithm
Displaying Interface Settings for STA
– 218 –
The rules defining port status are:
■
A port on a network segment with no other STA compliant bridging
device is always forwarding.
■
If two ports of a switch are connected to the same segment and
there is no other STA device attached to this segment, the port with
the smaller ID forwards packets and the other is discarding.
■
All ports are discarding when the switch is booted, then some of
them change state to learning, and then to forwarding.
◆
Forward Transitions
– The number of times this port has transitioned
from the Learning state to the Forwarding state.
◆
Designated Cost
– The cost for a packet to travel from this port to the
root in the current Spanning Tree configuration. The slower the media,
the higher the cost.
◆
Designated Bridge
– The bridge priority and MAC address of the
device through which this port must communicate to reach the root of
the Spanning Tree.
◆
Designated Port
– The port priority and number of the port on the
designated bridging device through which this switch must
communicate with the root of the Spanning Tree.
◆
Oper Path Cost
– The contribution of this port to the path cost of
paths towards the spanning tree root which include this port.
◆
Oper Link Type
– The operational point-to-point status of the LAN
segment attached to this interface. This parameter is determined by
manual configuration or by auto-detection, as described for Admin Link
Type in STA Port Configuration on
.
◆
Oper Edge Port
– This parameter is initialized to the setting for Admin
Edge Port in STA Port Configuration on
(i.e., true or false),
but will be set to false if a BPDU is received, indicating that another
bridge is attached to this port.
◆
Port Role
– Roles are assigned according to whether the port is part of
the active topology connecting the bridge to the root bridge (i.e.,
root
port), connecting a LAN through the bridge to the root bridge (i.e.,
designated
port), is the MSTI regional root (i.e.,
master
port), or is
an
alternate
or
backup
port that may provide connectivity if other
bridges, bridge ports, or LANs fail or are removed. The role is set to
disabled (i.e.,
disabled
port) if a port has no role within the spanning
tree.
Содержание ES3510MA-DC
Страница 1: ...Management Guide www edge core com 8 Port Layer 2 Fast Ethernet Switch...
Страница 2: ......
Страница 4: ......
Страница 6: ...ABOUT THIS GUIDE 6...
Страница 44: ...FIGURES 44...
Страница 50: ...TABLES 50...
Страница 52: ...SECTION I Getting Started 52...
Страница 62: ...CHAPTER 1 Introduction System Defaults 62...
Страница 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Страница 82: ...SECTION II Web Configuration 82...
Страница 98: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 98...
Страница 126: ...CHAPTER 4 Basic Management Tasks Resetting the System 126...
Страница 164: ...CHAPTER 5 Interface Configuration VLAN Trunking 164 Figure 57 Configuring VLAN Trunking...
Страница 202: ...CHAPTER 7 Address Table Settings Configuring MAC Address Mirroring 202...
Страница 452: ...CHAPTER 17 IP Services Displaying the DNS Cache 452...
Страница 498: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 498...
Страница 588: ...CHAPTER 22 SNMP Commands 588...
Страница 596: ...CHAPTER 23 Remote Monitoring Commands 596...
Страница 650: ...CHAPTER 24 Authentication Commands Management IP Filter 650...
Страница 738: ...CHAPTER 27 Interface Commands 738...
Страница 760: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 760...
Страница 782: ...CHAPTER 32 Address Table Commands 782...
Страница 810: ...CHAPTER 33 Spanning Tree Commands 810...
Страница 862: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 862...
Страница 876: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 876...
Страница 932: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 932...
Страница 956: ...CHAPTER 39 LLDP Commands 956...
Страница 1020: ...CHAPTER 42 Domain Name Service Commands 1020...
Страница 1026: ...CHAPTER 43 DHCP Commands DHCP Client 1026...
Страница 1058: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1058...
Страница 1060: ...SECTION IV Appendices 1060...
Страница 1065: ...APPENDIX A Software Specifications Management Information Bases 1065 Trap RFC 1215 UDP MIB RFC 2013...
Страница 1066: ...APPENDIX A Software Specifications Management Information Bases 1066...
Страница 1088: ...COMMAND LIST 1088...
Страница 1097: ......
Страница 1098: ...ES3510MA DC E122010 ST R01 150200000251A...