stp restore

CCNA Experiment 15 Protection of the STPEnvironment: Windows XP ,Packet Tracert 5.3.Purpose: To understand how to protect STP NetworkDescriptionBPDU Guard (BPDU protection ):BPDU protection is typically used in PortFast mode. after configuring BPDU protection on a port with PortFast mode enabled , receiving BPDUs will turn the port into a err-disable state . (portfast is typically usedon ports in Access mode)Root guard: The purpose of root protection

1. Problems after successful STP plug-in Installation After the plug-in is installed, You can see SOA tools and JAX-WS and SCA sub-Menus under eclipse menu window --> preferences. However, if you select the Java item below SCA, an error message is displayed: the current page contain invalid value .: This is caused by a bug in STP. Solution:You can download the corrected

Main contents of the experiment: 1.VTP of configuration 2.STP of configuration 3. Configuration of the switch 4. Configuration of routers 5. Test experiment topology: The 1.VLAN divides the VLAN ID for the 2~5 VLAN 1 for the Management VLAN, without the role of the user VLAN. IP address planning for 2.VLAN vlan ID ip address range /td> gateway address 2 192.168.10.0/26 192.168.10.1/26192.168.10.2/2

STP Definition 1. STP Spanning Tree Protocol) is a layer-2 link management protocol. Its main function is to provide redundant paths in Layer 2 links to ensure reliable and stable network operation on the basis of ensuring that there is no loop in the network. 2. The loop will cause infinite data loops in the loop, and the terminal site will receive duplicate information,VswitchObtain the MAC address of the

One, STP overviewSTP (Spanning tree Protocol, Spanning Tree Protocol) is a ring-proof application that is applied to the switch. function is used for anti-ring.Basic principle:By passing a special protocol message between the switches, the Bridge Protocol Data Unit (BPDU) is adopted to determine the topology of the network. There are two types of bpdus, one of which is configuration BPDUs (configuration BPDUs) and one TC BPDU (topology change BPDUs).T

Switch STP Configuration The value range of the 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 oneVswitchWhen the root port or blocked port of receives the inferior BPDUs package, it indicates that the indirect link from the switch to the root bridge is faulty, and the link between the switch and the root

Build tree initialization and Convergence STP establishes a root node, called the root bridge, and constructs a topology in which each node in the network can arrive at only one path, the final generated tree originated from the root node. redundant links that are not part of the shortest path tree will be blocked because such paths are blocked, therefore, it is possible to implement a non-loop topology. When a data frame is received on the blocked li

STP protocol and working process STP protocol (Spanning Tree Protocol) is a layer-2 management protocol with the standard of 802.1d. IEEE 802.1d is the earliest STPS standard. It provides a dynamic redundancy switching mechanism for the network. The STP protocol can deploy backup lines in the network design and ensure that * the backup line is closed when the mas

CCNA Experiment 13 STP the Load Balancer Environment: Windows XP , GNS3.0.7 Purpose: Learn how to Achieve load balancing in STP Description: The load balancing of STP is actually the use of another blocking link in the loop to share the load in the network steps: Open the GNS to build the project with the following topology:650) this.width=650; "src=" Http://

The implementation analysis of STP in Linux Network Bridge This article turns from: http://blog.sina.com.cn/s/blog_a3eacdb2010158hn.html I. The framework structure of STPSTP sends the BPDU package, which has two types: Configuration and TCN (topology change notification);There are two kinds of processing for BPDU packages: Receive and send (nonsense),For the configuration type of the BPDU packet sent, it is done by the timer, parameter BPDU packet of

are sent when the bridge receives better BPDUs.In addition, it also controls the transmission of BPDUs while "saving optimal BPDUs". When the bridge is first activated, all its ports start to send BPDUs every 2 seconds (if the default timer configuration is used), but if a port receives a BPDU from another bridge and the BPDU is better than the sent BPDU, the local port stops sending BPDUs. If a better BPDU is not sent from an adjacent bridge within a period of time (the default of 20 second

Tags: int range. com topology type mode config OSS processFirst, the experimental topology:Second, the experimental requirements:1, PC0 connection SW1, did not make any changes, see if F0/1 need to wait for 30s to become green;2, SW1 Global deployment of the default port Acceleration command, while the f0/2-5 deployed as Acess port;3, PC1~PC4 connection SW1, accelerate, the second into a green port, shorten the 30s, no longer wait.Third, command deployment:SW1 (config) #spanning-tree portfast De

I have mentioned in the previous article that if an enterprise only uses one vswitch for networking, there will be a single point of failure. If the switch is broken, then several modules cannot work normally at this time, A client cannot access the server, connect to the internet, or access the printer. In other words, if a fault occurs, the entire network cannot work normally. Therefore, in a general switched network, we all need to perform redundancy on the switch, but introducing redundancy

STP protocol ParsingIntroduction: a switch is also known as a bridge. In a bridge LAN, a redundant path is usually established to enhance the reliability. The network segment is connected by a redundant bridge. However, because the bridge does not isolate broadcast, the bridge loop is fatal to a LAN.Description of the STP Protocol www.2cto.com STP-Spanning Tree P

1. BPDU Message FormatThe switches use BPDUs (Bridge Protocol data units) to Exchange STP (Spanning Tree Protocol) information, and the BPDU messages are divided into two scenarios (STP working at the data Link layer) that are two classes of configuration BPDUs and TCN BPDUs respectively. BPDU Frame Frame Header Data (BPDU message) Fcs Configure BPDUs (con

When I was working on a Sharepoint-related project, due to the unfamiliar of SharePoint, the customer sent several files suffixed with. STP, which left me wondering for a long time. According to common sense, only know. STPs files are 3D Standard Interchange files that need to be opened using 3D processing software such as AutoCAD, Pro/E, and SW, but the size of the files that the customer gave me is very small, it should not be a 3D file. Later, when

floors are interconnected with the core, which is environmentally friendly with MDF switches. IDF also has one UTP to MDF for backup.When a fault occurs, green means that all workstations connected to MDF are correct, but red means that all workstations connected to IDF cannot connect to the server. Based on the previous line rectification, it is determined that the floor backbone is interrupted between MDF and IDF. However, because the LAN has become environmentally friendly,

STP Classification Ieee CISCO 802.1D STP Convergence 30-50s PVST (ISL only); pvst+ (ISL 802.1Q) 802.1W rapid-stp convergence within 1s Rapid-pvst 802.1s MST Mist/mst 802.1D stp===========pvst+ (ISL 802.1Q)Slow convergence and

"Copyright notice: Original translation articles, translation level is limited, errors are unavoidable,The Translator is not responsible for the consequences of errors or omissions in the article, please be careful to reprint them. Reproduced please retain this statement and source: blog.csdn.net/shallnet, download the English version of the book "The previous section has said that each time the bridge is in the listening state, the default is to listen for 15 seconds, in fact, in general,

Analysis and Summary of STP Spanning Tree ProtocolI. STP overview STP (Spanning Tree Protocol) is applicable to anti-loops between switches. The function is used to prevent loops. Basic principle: the network topology is determined by transmitting a special protocol packet (BPDU) between switches. Two types of BPDU are available: configuration BPDU and tc bpdu ).