stp cat5

2nd. Network documentationFirst, the network baselineThe simplest way to solve a network problem is to compare the current configuration with the previous configuration.The baseline document consists of different network and system documents, which include:? Network Configuration Table? Network topology diagram? ES Network Configuration table? ES network topology diagramConsiderations for creating a network:1) Determine the scope of the document coverage;2) Consistency: Collect the same informat

Attackers can exploit the vswitch vulnerability as follows: I. Spanning Tree attack Spanning Tree Protocol (STP) can prevent loops in redundant switching environments. If the network has a loop, it will become congested, resulting in a broadcast storm, resulting in inconsistent Mac tables, and eventually cause the network to crash. All switches using STP share information through the Bridge Protocol Data Un

Let me explain: The so-called "website template" is the template that you choose when you create a "subwebsite" on a website, All "website set templates" are the templates available for selection when "website set" is created, "Website template" first" Environment: website collection A: 8000; Step 1: create a sub-Website "test" (we are going to create the template on this subnet and save it) Step 2: Use SPD to open a: 8000/test, find default. Master, and change it to what you want (production pr

Ethernet technology has been passive learning for a long time. Nowadays, it is necessary to take the initiative. Passive depends on a series of experience values. For example, the STPS duration is 15 seconds, the information obtained by all vswitches within 30 seconds will be in a consistent state. If you do not have to wait for so long according to the active principle, can you just ask? The Development of Traditional Ethernet has gone through several stages: 1. CSMA/CD bus half duplex phase:B

Lab Environment:650) this.width=650; Tracer of "alt=" Cisco Packet EtherChannel increases link bandwidth and redundancy-Ibm.chick-mingkang.zhou "src=" http://img0.ph. 126.net/1inyhgrqquafdjfzpjjgsw==/6630808280955124494.jpg "style=" border:0px;height:auto;margin:0px 10px 0px 0px; "/ >Experimental Purpose:1. Observe the STP status of the two switches.2. Configure the EtherChannel, and add the physical port to the channel.3. Then check the

version: STP (Spanning Tree Protocol), RSTP (Fast spanning Tree Protocol), MSTP (multi spanning Tree Protocol). Spanning Tree algorithm (STA): to elect the Root bridge, which has the smallest bridge ID (that is, RID), the bridge ID is determined by the bridge precedence (priority) and bridge MAC address together calculate the path to the root bridge, by port overhead (cost), Bridge ID (bid= Bridge priority + Bridge MAC address

The BPDU guard function is to set the port to error-disabled immediately when it receives any BPDU.We know that when the STP function of the switch is enabled, all ports will participate in STP by default, and send andAccept BPDU. When BPDU guard is enabled, under normal circumstances, a downstream dormitory port will not receiveAny BPDU, because both the PC and the small switch do not support

, capture length 262144)[[emailprotected] ~]#Directly through the cat view is not able to see, all is a bunch of garbled, if you want to view the contents of the saved .cap file, you can tcpdump -r read the Read the saved Cap file [[emailprotected] ~]# tcpdump-r capture.capreading from File Capture.cap, Link-type en10mb (Ethernet) 21:51:09.223140 IP 10-10-40-110.ssh > 121.121.0.65.54289:flags [P.], seq 2802890002:2802890126, Ack 3182816820, win 14 The options [Nop,nop,ts Val 455057

. --------------------------------------------------------------------------------Inheritance relationship: java. lang. Object -- java. util. Date -- java. SQL. DateThe specific conversion relationship is java. util. Date d = new java. util. Date (new Java. SQL. Date ()); --------------------------------------------------------------------------------SQL. date, usually in the database time field, util. date is generally a daily date Field ---------------------------------------------------------

; # Related commands "insmod; rmmod; modinfo" # Start libmongod [Root @ localhost ~] # Systemctl start libcmdd; systemctl enable libcmdd [Root @ localhost ~] # Systemctl list-unit-files | grep lib1_d Libmongod. service enabled NETWORK CONFIGURATION ========================================================== ================================== # Modifying the NIC file eno16777736 [Root @ kvm ~] # Cd/etc/sysconfig/network-scripts/ [Root @ kvm network-scripts] # echo "BRIDGE = br0"> ifcfg-eno1677

the IOS-based switch:Switch (config-if) # spanning-tree [vlan-list] port-priorityAdjust the port ID on the CLI-based switch:Switch (enable) set spantree portpri {mldule/port} prioritySwitch (enable) set spantree portvlanpri {module/port} priority [vlans] 17. Modify the STP clock on the IOS-based switch:Switch (config) # spanning-tree [vlan-list] hello-time secondsSwitch (config) # spanning-tree [vlan-list] forward-time seconds'Switch (config) # spann