stp restore

First in your English version, export the list or website template, this file may be such a drop: TEMPLATE.STP Name this file TEMPLATE.STP as Template.cab Unzip this *.cab file In the unpacked folder, you will find a manifest.xml to open it with a text editor The code for this location, such as the one in this article (1031), is replaced with the following location: for example, 2052 1033\sts\ Layouts\1033\ /_layouts/1033/

As shown in, the STP protocol can only solve the loop shown in Figure A. If a vswitch downlink has a loop, the upper-layer switch may be paralyzed, and the STP protocol cannot solve this problem, in this case, you must use other solutions. I. Cisco switches1. Enable portfast globallySpanning-tree portfast default2. Enable BPDU protection under the interfaceSpanning-tree bpduguard enable3. Enable BPDU protec

The value range of the switch STP configuration spanning tree priority is 0 ~ 61440, increment is 4096, its valid value is ,......, 61440. The smaller the priority value, the higher the priority. 0 is the highest, and 61440 is the lowest. When the root port or blocked port of a vswitch receives an inferior BPDUs packet, it indicates that the indirect link between the vswitch and the root bridge is faulty, the link from the switch to the root bridge ma

Bundle of switch two-tier devices (EtherChannel):Whether it is a Mac or IP, the last three bits through an algorithm will be 000-111 in the range of a number, after the binary conversion, can get 8 results 0 1 2 3 4 5 6 7 So a bundle can only bundle 8 lines A switch module can only bundle 6 groups.Command: Global Inter port-channel 1 build GroupChannel-group 1 mode on to add the port to the 1 groupDescription Cisco namingSW Mo Trunk StpThe format of BPDUs (Bridge Protocol data Units):Proto

There was an article before, introduction if the enterprise only use one switch to the network, there will be a single point of failure, if the switch is broken, at this time the normal work between several modules, the client can not access the server, can not connect the Internet, can not access the printer, that is, a point of failure, The entire network is not functioning properly. So in a typical switched network, we all need to redundant the switch, but the introduction of redundancy will

The Spanning Tree Protocol has two main functions: 1. Avoiding path loopback in L2 switching networks; 2. Implementing redundant backup in L2 switching networks. This article describes in detail the election process in the Spanning Tree Protocol configuration. Step 1: Select Root Bridge) In a spanning tree, at the beginning, each switch considers itself as a root bridge and sends a BPDU to elect the root bridge. Select the root bridge based on the value of BridgeID. Bridge ID consists of two pa

. Each time you change the Podfile file, you need to re-execute the pod update command3. To import the corresponding header files when using: #import "MBProgressHUD.h"PS: When performing pod install, in addition to Podfile, a file named Podfile.lock is generated, which locks the version of the current dependent library, and does not change the version even if the pod install is executed more than once, only the pod Update will change the Podfile.lock. This prevents third-party library upgrades f

1. Elect a single root BRIDGE within an STP domainCompare all the switch's bid, who is the small who is root, after the selection of root only root can periodically send BPDUs, every 2 seconds sent, all nroot, not eligible to send BPDUs2. Elect a single RP on top of all NrootThe Cos value increases on the receiver, and the increment depends on the receive port bandwidthThe first step is to compare the COP values for the inbound direction of all the in

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network[876]: [Failed]mar-10:56:06 cloud01 network[876]: Bringing Up interface Br0:could not load file '/etc/sysconfig/network-scripts/ifcfg-br0 ' Mar-10:56:06 cloud01 network[876]: Could not load F Ile '/etc/sysconfig/network-scripts/ifcfg-br0 ' Mar 10:56:14 cloud01 nETWORK[876]: Determining IP information for br0 ... failed; No link present. Check cable? Mar 10:56:14 cloud01 network[876]: [Failed]mar 10:56:14 cloud01 systemd[1]: Network.service:control Process exited, code=exited Status=1ma

STP determines each switch port (specified port: DP; root port: RP; Blocked port: AP)Judgment steps:1. Election of the root switch:Judging object: Select one of all switches running the STP protocol;Judging by: The switch selects the bridge ID value (switch priority +MAC) The smallest switch as the root bridge in the network;After determining the root switch, all ports of the switch are designated port DP;2

CCNA Experiment 14 STP redundant backup link (EtherChannel)Environment: Windows XP , GNS3.0.7 , VPCS.exePurpose: Learn how to configure redundant backup links.Steps:1 , open GNS Create the following project:650) this.width=650; "src=" Http://hi.csdn.net/attachment/201011/21/0_1290326291ColF.gif "/>Description:(1) First to add switching modules for SW1 and SW2 two virtual devices(2) Note the console port number for both devices: sw1:2002, sw2:2003(3)

A. STP(Spanning Tree Protocol) command: spanning-tree VLAN 1 root primary ( Vlan1 Root bridge)spanning-tree VLAN 2 root secondary ( vlan2 backup bridge)two. Hot Backup Route selection protocol (HSRP)Cisco the private protocol. Lab Environment:Configuration HSRP two three-layer switches, the VLAN IP The address cannot be the same, but the virtual IP must be the same, the same VLAN , HSRP The group must be the same. Network planning: 1

The origin of the 1.STP protocol.In the two layer network, the switch plays an important role, if there is a switch failure will affect the use of the network, in order to avoid the existence of a single point of failure, in the actual two-layer link will be used in the link redundancy, that is, the use of a number of connections between switching devices, that is, multiple switches are connected, This allows other switches to be used, even if one swi

If each port on a vswitch has a host. So without listening and learning, it is easy to cause a broadcast storm. The Spanning Tree Protocol STP is generated to solve such problems. How the Spanning Tree works: The international standard for Spanning Tree Protocol is 802.1b. the Network Bridge/switch that runs the Spanning Tree Algorithm communicates configuration information with other switches through the Network Bridge Protocol Data Unit BPDU withi

Content: 1. portfast fast Port 2. bpduguard BPDU Protection 3. bpdufilter BPDU Filter 4. rootguard root Protection Can be configured globally or in the interface, with slightly different 1. portfast fast port: can be configured globally or under an Interface Features:EnableStandard 802.1d does not pass through lsn, LRNDirect to forwarding status 2. bpduguard BPDU Protection Features:GlobalThe command is for the terminal of the portfast interface. Normally, the Peer (PC or router) of the portfa

LabSTP The lab objectives are to configure STP on two or three switches,Set switch1Vlan1Switch2Vlan1SwitVlan2The next root bridge, switch2Vlan2The root bridge Lab Environment 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M02/46/3E/wKiom1PwkPGQdXxOAAC8xoZ18gQ183.jpg "Title =" image001.png "alt =" wkiom1pwkpgqdxxoaac8xoz18gq183.jpg "/> Tutorial steps: 1. Set vlan1 as the root bridge 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02

The following is an article from H3C, which was reorganized to facilitate the study.STP Spanning Tree ProtocolIs easy to understand. You can download the instructions in another article:Analysis of STP Spanning Tree Protocol principles and Algorithms. The following articles are extracted from this document, because it is too long to extract only a part. Reprinted Please note: http://blog.csdn.net/shanzhizi Analyze it nowSTPAlgorithmTheoretically speak

1. Root Guard Parsing650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/78/66/wKiom1Z7j2GDyloyAAA90C66iSg126.png "title=" s7.png "alt=" Wkiom1z7j2gdyloyaaa90c66isg126.png "/>To protect the stability of the spanningtree, root guard configures the root bridge to specify the port or switch to the non-switch port, and when a better BPDU is received on the interface configured with root guard, the interface is blocked into the broken state. When not received more BPDUs are automatically recov

3228 the port fei_1/1 and fei_1/2 used in the STP configuration of the vswitch 3228-1 are connected to the vswitch 3228-2 and the vswitch 3228-3 respectively; vswitch 3228-2 uses ports fei_1/3 and fei_1/4 to connect to vswitch 3228-1 and vswitch 3228-3 respectively. vswitch 3228-3 uses ports fei_1/5 and fei_1/6 to connect to vswitch 3228-1 and vswitch 3228-2 respectively; the vswitch 3228-2 and vswitch 3228-3 respectively use the ports fei_1/7 and fei