rstp protocol

STP (Spanning Tree Protocol) is a layer-2 management protocol that selectively blocks redundant network links to eliminate L2 network loops, it also supports link backup. Like other protocols, the Spanning Tree Protocol is constantly updated with the continuous development of the network. The Spanning Tree Protocol is

default Protocol value is 15 seconds. Before all bridges receive the changed message, if the forwarding port in the old topology does not find itself in the new topology to stop forwarding, a temporary loop may exist. To solve the problem of temporary loop, the Spanning Tree uses a timer policy, that is, adding an intermediate state that only learns MAC addresses but does not participate in forwarding between the ports from the blocked status to the

Session 1 RSTP1. Overview of STPPublic: 802.1dSTP (General stp), 802.1wRSTP (new rapid STP), 802.1sMSTP (the latest practical multi-instance STP, support for multi-vendor device Mix)Cisco private: Pvst, pvst+, r-pvst+ (corresponds to above, but no multi-instance)Rstp:rapid Spanning Tree Protocol (RSTP) fast spanning trees, the common STP convergence speed is fast, up to 6s complete, the general need 15s con

First, compare the structure and differences between 802.1D and 802.1W on PDU. The Spanning Tree Protocol has two types of BPDU: I. Configuration BPDU: L in 802.1D, BPDU are automatically generated by each Bridge during the initialization of the production tree. After receiving BPDU with better superior, a better BPDU is used. When the STP domain converges, the configuration BPDU of the entire network is the configuration BPDU of the Root Bridge. Of c

A rstp fault Early in the morning, I received a call and the ping gateway to the direct connection failed. No interface arp table for dis ARP Dis mac-address without related interfaces It seems that there are only physical problems, but it is said that interfaces and cables are okay. View dis stp interface Ethernet 1/0/1 ---- [CIST] [Port1 (Ethernet1/0/1)] [DISCARDING] ---- Port Protocol: enabled Port Role:

o----http://brianchen85.blogspot.jp/2015/03/android-play-rtsp-vedio.htmlPrevious introduction to the use of Vitamio third-party componentsAlthough it is powerful, it must be returned to the nativeThis is to write a simple sampleAs there is no test connection, this may be due to Google searchRTSP is the protocol for instant streamingThe possible reasons for the delay of the painting are:1. Delayed Internet2. Hand Machine Hardware Specifications3. Multi

lack of spanning tree protocol :The port must undergo a 30s delay from blocking to forwardingFast Spanning Tree 802.1wWith STP all functions, convergence time less than 1sCompatible with 802.1D, but the convergence time is 30sfeatures :1, the root port in the new topology can immediately enter the forwarding state, saving two delay. (Synchronization is required to prevent loops)2, on the point-to-place link, the specified port can quickly enter the fo

of the Reference demo project: Kxmovieexample Three, encountered problems playing local video and network video normal, playing webcam real-time monitoring video stream (H264) error occurred:[Rtsp @ 0X906CC00] UDP timeout, retrying with TCP[Rtsp @ 0X906CC00] nonmatching Transport in Server reply[Rtsp @ 0X906CC00] Could not find codec parameters for stream 0 (video:h264): Unspecified sizeConsider increasing the value for the ' analyzeduration ' and ' probesize ' optionsCouldn ' t find stream inf

IOS uses ffmpeg to play rstp real-time monitoring video data streamsI. Compile the ffmpeg Library (kxmovie) for the iOS platform. Recently, a project needs to play audio, video, and video stream data monitored in real time by the Network Camera in various formats, finally selected kxmovie, kxmovie project has integrated ffmpeg and simple player, specific can refer to kxmovie home page: https://github.com/kolyvan/kxmovieCompiling kxmovie is simple and

2. Telnet protocolThe Telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main way of Internet remote Login service. It provides users with the ability to perform remote host work on the local computer. Use a Telnet program (such as Putty) on the end user's computer to connect to the server. End users can enter commands in t

2017-02-10 reliable data transmission principle, reliable data transmission protocol, automatic retransmission request protocol, stop and wait protocol, redundant packet, bit alternation Protocol, sliding window protocol "Computer network-Top Down Method" (original book 6th

2017-02-11 structure reliable data transmission protocol, Sliding window protocol, bit alternation protocol, fallback N-Step protocol, and select retransmission protocol 1: Redundant data duplicate (packet), 2: Inverted count timer (countdown timer), 3: Bit alternating

http://blog.csdn.net/heanyu/article/details/6202500 RTP (Real time Transport Protocol) RTP is a transport protocol for multimedia traffic on the Internet that is published by the IETF (Internet Engineering Task Force) as RFC1889 . RTP is defined as a one-to-many transmission, with the purpose of providing time information and implementing stream synchronization. Typical applications for RTP are built on U

RTP (Real Time Transport Protocol) RTP is a transmission protocol for multimedia data streams over the Internet.Rfc1889Release. RTP is defined to work during one-to-one or one-to-many transmission. It aims to provide time information and implement stream synchronization. Typical RTP applications are built on UDP, but can also work on TCP, ATM, and other protocols. RTP itself only guarantees the transmissio

The IP protocol is the most important protocol in the family of TCP/IP protocols, which provides unreliable, non-connected datagram transport services. So understanding IP protocols is critical to our learning network.IP headerImportant Field Introduction：4bit First ministerial degree: in 4 bytes, determines the IP head of the largest minister of 15*4=60, the general IP datagram header length of 20, at this

"Experiment Name"The configuration of the fast spanning Tree protocol RSTP."Experimental Purpose"Understand how the fast spanning Tree protocol RSTP works and how to configure a fast spanning tree on a switch."Background description"A school in order to carry out computer teaching and network office, the establishment

Spanning Tree Protocol configuration for the Cisco PT Simulation Experiment (5) switchExperimental Purpose : Understanding how spanning Tree protocol works Mastering the Fast Spanning Tree protocol RSTP basic configuration method Experimental Background : The company's finance department and the sales

--> 　　核心提示：-->With the development of the IP network to the multi-service network, especially the development of VoIP in recent years, it is inevitable to transmit signaling messages in the IP network. But in the IP network cannot provide high-quality transmission services like mtp3 and ATM, so the ITU-T proposed an improved version of sscop-sscopmce in Multi-link and non-connection environment ), it is used to transmit signaling messages in an IP-based network. However, compared with sscop, ssc

Label:IMAP (Internet Mail access protocol,internet) is formerly known as the Interactive Mail Access Protocol (Interactive mail, Access Protocol). IMAP was an email acquisition protocol developed by Stanford University in 1986. Its main role is that the mail client (for example, Ms Outlook Express) can obtain mail info