
C
HAPTER
8
| Spanning Tree Algorithm
Configuring Interface Settings for STA
– 215 –
◆
Admin Link Type
– The link type attached to this interface.
■
Point-to-Point – A connection to exactly one other bridge.
■
Shared – A connection to two or more bridges.
■
Auto – The switch automatically determines if the interface is
attached to a point-to-point link or to shared media. (This is the
default setting.)
◆
Root Guard
– STA allows a bridge with a lower bridge identifier (or
same identifier and lower MAC address) to take over as the root bridge
at any time. Root Guard can be used to ensure that the root bridge is
not formed at a suboptimal location. Root Guard should be enabled on
any designated port connected to low-speed bridges which could
potentially overload a slower link by taking over as the root port and
forming a new spanning tree topology. It could also be used to form a
border around part of the network where the root bridge is allowed.
(Default: Disabled)
◆
Admin Edge Port
– Since end nodes
cannot
cause forwarding loops,
they can pass directly through to the spanning tree forwarding state.
Specifying Edge Ports provides quicker convergence for devices such as
workstations or servers, retains the current forwarding database to
reduce the amount of frame flooding required to rebuild address tables
during reconfiguration events, does not cause the spanning tree to
initiate reconfiguration when the interface changes state, and also
overcomes other STA-related timeout problems. However, remember
that Edge Port should only be enabled for ports connected to an end-
node device. (Default: Auto)
■
Enabled
– Manually configures a port as an Edge Port.
■
Disabled
– Disables the Edge Port setting.
■
Auto
– The port will be automatically configured as an edge port if
the edge delay time expires without receiving any RSTP or MSTP
BPDUs. Note that edge delay time (802.1D-2004 17.20.4) equals
the protocol migration time if a port's link type is point-to-point
(which is 3 seconds as defined in IEEE 802.3D-2004 17.20.4);
otherwise it equals the spanning tree’s maximum age for
configuration messages (see maximum age under
Global Settings for STA" on page 207
Table 13: Default STA Path Costs
Port Type
IEEE 802.1D-1998
IEEE 802.1w-2001
Ethernet
65,535 1,000,000
Fast Ethernet
65,535
100,000
Gigabit Ethernet
10,000
10,000
Summary of Contents for ES3510MA-DC
Page 1: ...Management Guide www edge core com 8 Port Layer 2 Fast Ethernet Switch...
Page 2: ......
Page 4: ......
Page 6: ...ABOUT THIS GUIDE 6...
Page 44: ...FIGURES 44...
Page 50: ...TABLES 50...
Page 52: ...SECTION I Getting Started 52...
Page 62: ...CHAPTER 1 Introduction System Defaults 62...
Page 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Page 82: ...SECTION II Web Configuration 82...
Page 98: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 98...
Page 126: ...CHAPTER 4 Basic Management Tasks Resetting the System 126...
Page 164: ...CHAPTER 5 Interface Configuration VLAN Trunking 164 Figure 57 Configuring VLAN Trunking...
Page 202: ...CHAPTER 7 Address Table Settings Configuring MAC Address Mirroring 202...
Page 452: ...CHAPTER 17 IP Services Displaying the DNS Cache 452...
Page 498: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 498...
Page 588: ...CHAPTER 22 SNMP Commands 588...
Page 596: ...CHAPTER 23 Remote Monitoring Commands 596...
Page 650: ...CHAPTER 24 Authentication Commands Management IP Filter 650...
Page 738: ...CHAPTER 27 Interface Commands 738...
Page 760: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 760...
Page 782: ...CHAPTER 32 Address Table Commands 782...
Page 810: ...CHAPTER 33 Spanning Tree Commands 810...
Page 862: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 862...
Page 876: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 876...
Page 932: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 932...
Page 956: ...CHAPTER 39 LLDP Commands 956...
Page 1020: ...CHAPTER 42 Domain Name Service Commands 1020...
Page 1026: ...CHAPTER 43 DHCP Commands DHCP Client 1026...
Page 1058: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1058...
Page 1060: ...SECTION IV Appendices 1060...
Page 1066: ...APPENDIX A Software Specifications Management Information Bases 1066...
Page 1088: ...COMMAND LIST 1088...
Page 1097: ......